Address comments

The @ai_function decorator was renamed to @tool in release 
python-1.0.0b260128 (PR #3413) as a breaking change.

Line 58 of python/samples/03-workflows/README.md still referenced 
the old @ai_function name, causing users to hit:
ImportError: cannot import name 'AIFunction'

Changes made:
- Fixed @ai_function to @tool on line 58 only
- No formatting or whitespace changes

.github/scripts/check_team_membership.js

@@ -0,0 +1,61 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+/**
+ * Resolve the issue author and check their team membership.
+ *
+ * @param {object} opts
+ * @param {object} opts.github - Octokit REST client from actions/github-script
+ * @param {object} opts.context - GitHub Actions context
+ * @param {object} opts.core - GitHub Actions core toolkit
+ * @param {string} opts.teamSlug - Team slug to check membership against
+ * @param {string|number} opts.issueNumber - Issue number to resolve author for
+ * @returns {Promise<{author: string|null, isTeamMember: boolean}>}
+ */
+async function checkTeamMembership({ github, context, core, teamSlug, issueNumber }) {
+  let author = context.payload.issue?.user?.login;
+  if (!author) {
+    const { data: issue } = await github.rest.issues.get({
+      owner: context.repo.owner,
+      repo: context.repo.repo,
+      issue_number: Number(issueNumber),
+    });
+    author = issue.user?.login;
+  }
+
+  if (!author) {
+    core.setFailed('Could not determine issue author (user may be deleted).');
+    return { author: null, isTeamMember: false };
+  }
+
+  try {
+    await github.rest.teams.getByName({
+      org: context.repo.owner,
+      team_slug: teamSlug,
+    });
+  } catch (error) {
+    core.setFailed(`Team lookup failed for ${teamSlug}: ${error.message}`);
+    throw error;
+  }
+
+  let isTeamMember = false;
+  try {
+    const teamMembership = await github.rest.teams.getMembershipForUserInOrg({
+      org: context.repo.owner,
+      team_slug: teamSlug,
+      username: author,
+    });
+    isTeamMember = teamMembership.data.state === 'active';
+  } catch (error) {
+    if (error.status === 404) {
+      core.info(`Author ${author} is not a member of team ${teamSlug}.`);
+      isTeamMember = false;
+    } else {
+      core.setFailed(`Team membership lookup failed for ${author}: ${error.message}`);
+      throw error;
+    }
+  }
+
+  return { author, isTeamMember };
+}
+
+module.exports = checkTeamMembership;

.github/tests/test_check_team_membership.js

@@ -0,0 +1,178 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+/**
+ * Tests for check_team_membership.js.
+ *
+ * Run with: node --test .github/tests/test_check_team_membership.js
+ */
+
+const { describe, it } = require('node:test');
+const assert = require('node:assert/strict');
+
+const checkTeamMembership = require('../scripts/check_team_membership.js');
+
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function createMocks({ payloadIssue = undefined, apiUser = 'api-user', teamState = 'active' } = {}) {
+  const core = {
+    _infoMessages: [],
+    _failedMessages: [],
+    info(msg) { this._infoMessages.push(msg); },
+    setFailed(msg) { this._failedMessages.push(msg); },
+  };
+
+  const context = {
+    payload: { issue: payloadIssue },
+    repo: { owner: 'test-org', repo: 'test-repo' },
+  };
+
+  const github = {
+    rest: {
+      issues: {
+        get: async () => ({
+          data: { user: apiUser ? { login: apiUser } : null },
+        }),
+      },
+      teams: {
+        getByName: async () => ({}),
+        getMembershipForUserInOrg: async () => ({
+          data: { state: teamState },
+        }),
+      },
+    },
+  };
+
+  return { core, context, github };
+}
+
+const BASE_OPTS = { teamSlug: 'my-team', issueNumber: '123' };
+
+
+// ---------------------------------------------------------------------------
+// Author resolution
+// ---------------------------------------------------------------------------
+
+describe('author resolution', () => {
+  it('resolves author from event payload', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'payload-user' } },
+    });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.author, 'payload-user');
+  });
+
+  it('resolves author via API when payload issue is absent', async () => {
+    const { github, context, core } = createMocks({ apiUser: 'api-user' });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.author, 'api-user');
+  });
+
+  it('resolves author via API when payload issue user is null (deleted account)', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: null },
+      apiUser: 'fetched-user',
+    });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.author, 'fetched-user');
+  });
+
+  it('handles deleted account when API also returns null user', async () => {
+    const { github, context, core } = createMocks({ apiUser: null });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.author, null);
+    assert.equal(result.isTeamMember, false);
+    assert.ok(core._failedMessages.some(m => m.includes('deleted')));
+  });
+});
+
+
+// ---------------------------------------------------------------------------
+// Team lookup
+// ---------------------------------------------------------------------------
+
+describe('team lookup', () => {
+  it('fails the job when team lookup errors', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'user1' } },
+    });
+    const error = new Error('Bad credentials');
+    github.rest.teams.getByName = async () => { throw error; };
+
+    await assert.rejects(
+      () => checkTeamMembership({ github, context, core, ...BASE_OPTS }),
+      (err) => err === error,
+    );
+    assert.ok(core._failedMessages.some(m => m.includes('Team lookup failed')));
+  });
+});
+
+
+// ---------------------------------------------------------------------------
+// Team membership
+// ---------------------------------------------------------------------------
+
+describe('team membership', () => {
+  it('returns true for active team member', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'member' } },
+      teamState: 'active',
+    });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.isTeamMember, true);
+  });
+
+  it('returns false for pending team member', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'pending-user' } },
+      teamState: 'pending',
+    });
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.isTeamMember, false);
+  });
+
+  it('treats 404 membership response as non-member without failing', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'outsider' } },
+    });
+    const notFoundError = new Error('Not Found');
+    notFoundError.status = 404;
+    github.rest.teams.getMembershipForUserInOrg = async () => { throw notFoundError; };
+
+    const result = await checkTeamMembership({ github, context, core, ...BASE_OPTS });
+    assert.equal(result.isTeamMember, false);
+    assert.equal(core._failedMessages.length, 0);
+    assert.ok(core._infoMessages.some(m => m.includes('not a member')));
+  });
+
+  it('fails the job on non-404 membership errors', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'user1' } },
+    });
+    const serverError = new Error('Internal Server Error');
+    serverError.status = 500;
+    github.rest.teams.getMembershipForUserInOrg = async () => { throw serverError; };
+
+    await assert.rejects(
+      () => checkTeamMembership({ github, context, core, ...BASE_OPTS }),
+      (err) => err === serverError,
+    );
+    assert.ok(core._failedMessages.some(m => m.includes('membership lookup failed')));
+  });
+
+  it('fails the job on membership errors without status code', async () => {
+    const { github, context, core } = createMocks({
+      payloadIssue: { user: { login: 'user1' } },
+    });
+    const networkError = new Error('ECONNREFUSED');
+    github.rest.teams.getMembershipForUserInOrg = async () => { throw networkError; };
+
+    await assert.rejects(
+      () => checkTeamMembership({ github, context, core, ...BASE_OPTS }),
+      (err) => err === networkError,
+    );
+    assert.ok(core._failedMessages.some(m => m.includes('membership lookup failed')));
+  });
+});

.github/workflows/devflow-pr-review.yml

@@ -0,0 +1,165 @@
+name: DevFlow PR Review
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - reopened
+      - ready_for_review
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: Pull request number to review
+        required: true
+        type: string
+
+permissions:
+  contents: read
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: devflow-pr-review-${{ github.repository }}-${{ github.event.pull_request.number || inputs.pr_number || github.run_id }}
+  cancel-in-progress: true
+
+env:
+  DEVFLOW_REPOSITORY: ${{ vars.DF_REPO }}
+  DEVFLOW_REF: main
+  TARGET_REPO_PATH: ${{ github.workspace }}/target-repo
+  DEVFLOW_PATH: ${{ github.workspace }}/devflow
+
+jobs:
+  team_check:
+    runs-on: ubuntu-latest
+    outputs:
+      is_team_member: ${{ steps.check.outputs.is_team_member }}
+      pr_number: ${{ steps.pr.outputs.pr_number }}
+      pr_url: ${{ steps.pr.outputs.pr_url }}
+      repo: ${{ steps.pr.outputs.repo }}
+    steps:
+      - name: Resolve PR metadata
+        id: pr
+        shell: bash
+        env:
+          PR_HTML_URL: ${{ github.event.pull_request.html_url }}
+          PR_NUMBER_EVENT: ${{ github.event.pull_request.number }}
+          PR_NUMBER_INPUT: ${{ inputs.pr_number }}
+        run: |
+          set -euo pipefail
+
+          if [[ "${GITHUB_EVENT_NAME}" == "pull_request_target" ]]; then
+            pr_number="${PR_NUMBER_EVENT}"
+            pr_url="${PR_HTML_URL}"
+          else
+            pr_number="${PR_NUMBER_INPUT}"
+            pr_url="https://github.com/${GITHUB_REPOSITORY}/pull/${pr_number}"
+          fi
+
+          if [[ ! "$pr_number" =~ ^[1-9][0-9]*$ ]]; then
+            echo "Could not determine PR number; for workflow_dispatch runs, the 'pr_number' input is required when not running on pull_request_target." >&2
+            exit 1
+          fi
+
+          echo "pr_url=${pr_url}" >> "$GITHUB_OUTPUT"
+          echo "pr_number=${pr_number}" >> "$GITHUB_OUTPUT"
+          echo "repo=${GITHUB_REPOSITORY}" >> "$GITHUB_OUTPUT"
+
+      - name: Check PR author team membership
+        id: check
+        uses: actions/github-script@v8
+        env:
+          TEAM_NAME: ${{ secrets.DEVELOPER_TEAM }}
+          PR_NUMBER: ${{ steps.pr.outputs.pr_number }}
+        with:
+          github-token: ${{ secrets.GH_ACTIONS_PR_WRITE }}
+          script: |
+            let author = context.payload.pull_request?.user?.login;
+            if (!author) {
+              const { data: pr } = await github.rest.pulls.get({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: Number(process.env.PR_NUMBER),
+              });
+              author = pr.user.login;
+            }
+
+            let isTeamMember = false;
+            try {
+              const teamMembership = await github.rest.teams.getMembershipForUserInOrg({
+                org: context.repo.owner,
+                team_slug: process.env.TEAM_NAME,
+                username: author,
+              });
+              isTeamMember = teamMembership.data.state === 'active';
+            } catch (error) {
+              console.log(`Team membership lookup failed for ${author}: ${error.message}`);
+              isTeamMember = false;
+            }
+
+            core.setOutput('is_team_member', isTeamMember ? 'true' : 'false');
+            if (isTeamMember) {
+              core.info(`Author ${author} is a team member; proceeding with review.`);
+            } else {
+              core.info(`Author ${author} is not a member of ${process.env.TEAM_NAME}; skipping review.`);
+            }
+
+  review:
+    runs-on: ubuntu-latest
+    needs: team_check
+    if: ${{ needs.team_check.outputs.is_team_member == 'true' }}
+    timeout-minutes: 60
+    # Advisory check: failures here should not block the PR. The reviewer
+    # posts comments as a best-effort signal; if the pipeline breaks, the
+    # PR author should still be able to merge without a red required check.
+    continue-on-error: true
+
+    steps:
+      # Safe checkout: base repo only, not the untrusted PR head.
+      - name: Checkout target repo base
+        uses: actions/checkout@v6
+        with:
+          ref: ${{ github.event_name == 'pull_request_target' && github.event.pull_request.base.sha || github.sha }}
+          fetch-depth: 0
+          persist-credentials: false
+          path: target-repo
+
+      # Private DevFlow checkout: the PAT/token grants access to this repo's code.
+      - name: Checkout DevFlow
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ env.DEVFLOW_REPOSITORY }}
+          ref: ${{ env.DEVFLOW_REF }}
+          token: ${{ secrets.DEVFLOW_TOKEN }}
+          fetch-depth: 1
+          persist-credentials: false
+          path: devflow
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "0.11.x"
+          enable-cache: true
+
+      - name: Install DevFlow dependencies
+        working-directory: ${{ env.DEVFLOW_PATH }}
+        run: uv sync --frozen
+
+      - name: Run PR review
+        id: review
+        working-directory: ${{ env.DEVFLOW_PATH }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_COPILOT_TOKEN: ${{ secrets.GH_COPILOT_TOKEN }}
+          SK_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          AGENT_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          PR_URL: ${{ needs.team_check.outputs.pr_url }}
+        run: |
+          uv run python scripts/trigger_pr_review.py \
+            --pr-url "$PR_URL" \
+            --github-username "$GITHUB_ACTOR" \
+            --no-require-comment-selection

.github/workflows/issue-triage.yml

@@ -0,0 +1,199 @@
+name: Issue Triage
+
+on:
+  workflow_dispatch:
+    inputs:
+      issue_number:
+        description: Issue number to triage
+        required: true
+        type: string
+
+permissions:
+  contents: read
+  issues: write
+  id-token: write
+
+concurrency:
+  group: issue-triage-${{ github.repository }}-${{ github.event.issue.number || inputs.issue_number || github.run_id }}
+  cancel-in-progress: true
+
+env:
+  DEVFLOW_REPOSITORY: ${{ vars.DF_REPO }}
+  DEVFLOW_REF: main
+  TARGET_REPO_PATH: ${{ github.workspace }}/target-repo
+  DEVFLOW_PATH: ${{ github.workspace }}/devflow
+
+jobs:
+  team_check:
+    runs-on: ubuntu-latest
+    outputs:
+      is_team_member: ${{ steps.check.outputs.is_team_member }}
+      issue_number: ${{ steps.issue.outputs.issue_number }}
+      repo: ${{ steps.issue.outputs.repo }}
+    steps:
+      - name: Resolve issue metadata
+        id: issue
+        shell: bash
+        env:
+          ISSUE_NUMBER_EVENT: ${{ github.event.issue.number }}
+          ISSUE_NUMBER_INPUT: ${{ inputs.issue_number }}
+        run: |
+          set -euo pipefail
+
+          if [[ "${GITHUB_EVENT_NAME}" == "issues" ]]; then
+            issue_number="${ISSUE_NUMBER_EVENT}"
+          else
+            issue_number="${ISSUE_NUMBER_INPUT}"
+          fi
+
+          if [[ ! "$issue_number" =~ ^[1-9][0-9]*$ ]]; then
+            echo "Could not determine issue number; for workflow_dispatch runs, the 'issue_number' input is required." >&2
+            exit 1
+          fi
+
+          echo "issue_number=${issue_number}" >> "$GITHUB_OUTPUT"
+          echo "repo=${GITHUB_REPOSITORY}" >> "$GITHUB_OUTPUT"
+
+      - name: Checkout scripts
+        uses: actions/checkout@v6
+        with:
+          sparse-checkout: .github/scripts
+          fetch-depth: 1
+          persist-credentials: false
+
+      - name: Check issue author team membership
+        id: check
+        uses: actions/github-script@v8
+        env:
+          TEAM_NAME: ${{ secrets.DEVELOPER_TEAM }}
+          ISSUE_NUMBER: ${{ steps.issue.outputs.issue_number }}
+        with:
+          github-token: ${{ secrets.GH_ACTIONS_PR_WRITE }}
+          script: |
+            const checkTeamMembership = require('./.github/scripts/check_team_membership.js');
+            const { author, isTeamMember } = await checkTeamMembership({
+              github,
+              context,
+              core,
+              teamSlug: process.env.TEAM_NAME,
+              issueNumber: process.env.ISSUE_NUMBER,
+            });
+            core.setOutput('is_team_member', isTeamMember ? 'true' : 'false');
+            if (isTeamMember) {
+              core.info(`Author ${author} is a team member; skipping auto-triage.`);
+            } else {
+              core.info(`Author ${author} is not a team member; proceeding with triage.`);
+            }
+
+  triage:
+    runs-on: ubuntu-latest
+    needs: team_check
+    if: ${{ needs.team_check.outputs.is_team_member == 'false' }}
+    environment: integration
+    timeout-minutes: 60
+
+    steps:
+      # Safe checkout: base repo only.
+      - name: Checkout target repo base
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+          path: target-repo
+
+      # Private DevFlow (maf-dashboard) checkout.
+      - name: Checkout DevFlow
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ env.DEVFLOW_REPOSITORY }}
+          ref: ${{ env.DEVFLOW_REF }}
+          token: ${{ secrets.DEVFLOW_TOKEN }}
+          fetch-depth: 1
+          persist-credentials: false
+          path: devflow
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "0.11.x"
+          enable-cache: true
+
+      - name: Install DevFlow dependencies
+        working-directory: ${{ env.DEVFLOW_PATH }}
+        run: uv sync --frozen
+
+      - name: Azure CLI Login
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+
+      - name: Classify issue relevance
+        id: spam
+        working-directory: ${{ env.DEVFLOW_PATH }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SK_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          AGENT_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          ISSUE_REPO: ${{ needs.team_check.outputs.repo }}
+          ISSUE_NUMBER: ${{ needs.team_check.outputs.issue_number }}
+        run: |
+          uv run python scripts/classify_issue_spam.py \
+            --repo "$ISSUE_REPO" \
+            --issue-number "$ISSUE_NUMBER" \
+            --repo-path "${TARGET_REPO_PATH}" \
+            --apply-labels
+
+      - name: Stop after spam gate
+        if: ${{ steps.spam.outputs.decision != 'allow' }}
+        shell: bash
+        env:
+          SPAM_DECISION: ${{ steps.spam.outputs.decision }}
+        run: |
+          echo "Stopping: spam gate decided: ${SPAM_DECISION}"
+          exit 1
+
+      - name: Reproduce reported issue
+        if: ${{ steps.spam.outputs.decision == 'allow' }}
+        id: repro
+        working-directory: ${{ env.DEVFLOW_PATH }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_COPILOT_TOKEN: ${{ secrets.GH_COPILOT_TOKEN }}
+          SK_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          AGENT_REPO_PATH: ${{ env.TARGET_REPO_PATH }}
+          ISSUE_REPO: ${{ needs.team_check.outputs.repo }}
+          ISSUE_NUMBER: ${{ needs.team_check.outputs.issue_number }}
+          # Model-provider settings for generated repro code. Never enter the
+          # agent prompt; consumed by SDK constructors via os.environ. Azure
+          # OpenAI and Foundry auth via AAD from the azure/login step above.
+          OPENAI_API_KEY: ${{ secrets.OPENAI__APIKEY }}
+          OPENAI_CHAT_COMPLETION_MODEL: ${{ vars.OPENAI__CHATMODELID }}
+          OPENAI_CHAT_MODEL: ${{ vars.OPENAI__RESPONSESMODELID }}
+          OPENAI_MODEL: ${{ vars.OPENAI__RESPONSESMODELID }}
+          OPENAI_EMBEDDING_MODEL: ${{ vars.OPENAI_EMBEDDING_MODEL_ID }}
+          AZURE_OPENAI_ENDPOINT: ${{ vars.AZUREOPENAI__ENDPOINT }}
+          AZURE_OPENAI_CHAT_COMPLETION_MODEL: ${{ vars.AZUREOPENAI__CHATDEPLOYMENTNAME }}
+          AZURE_OPENAI_CHAT_MODEL: ${{ vars.AZUREOPENAI__RESPONSESDEPLOYMENTNAME }}
+          AZURE_OPENAI_MODEL: ${{ vars.AZUREOPENAI__RESPONSESDEPLOYMENTNAME }}
+          AZURE_OPENAI_EMBEDDING_MODEL: ${{ vars.AZURE_OPENAI_EMBEDDING_DEPLOYMENT_NAME }}
+          FOUNDRY_PROJECT_ENDPOINT: ${{ vars.FOUNDRY_PROJECT_ENDPOINT }}
+          FOUNDRY_MODEL: ${{ vars.FOUNDRY_MODEL }}
+          FOUNDRY_AGENT_NAME: ${{ vars.FOUNDRY_AGENT_NAME }}
+          FOUNDRY_AGENT_VERSION: ${{ vars.FOUNDRY_AGENT_VERSION }}
+          FOUNDRY_MODELS_ENDPOINT: ${{ vars.FOUNDRY_MODELS_ENDPOINT || '' }}
+          FOUNDRY_MODELS_API_KEY: ${{ secrets.FOUNDRY_MODELS_API_KEY || '' }}
+          FOUNDRY_EMBEDDING_MODEL: ${{ vars.FOUNDRY_EMBEDDING_MODEL || '' }}
+          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+          ANTHROPIC_CHAT_MODEL: ${{ vars.ANTHROPIC_CHAT_MODEL_ID }}
+        run: |
+          uv run python scripts/trigger_issue_repro.py \
+            --repo "$ISSUE_REPO" \
+            --issue-number "$ISSUE_NUMBER" \
+            --github-username "$GITHUB_ACTOR"

.github/workflows/python-integration-tests.yml

@@ -87,6 +87,14 @@ jobs:
           -n logical --dist worksteal
           --timeout=120 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-openai
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Azure OpenAI integration tests
   python-tests-azure-openai:
@@ -130,6 +138,14 @@ jobs:
           -n logical --dist worksteal
           --timeout=120 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-azure-openai
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Misc integration tests (Anthropic, Hyperlight, Ollama, MCP)
   python-tests-misc-integration:
@@ -141,6 +157,8 @@ jobs:
       ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
       ANTHROPIC_CHAT_MODEL: ${{ vars.ANTHROPIC_CHAT_MODEL_ID }}
       LOCAL_MCP_URL: ${{ vars.LOCAL_MCP__URL }}
+      OLLAMA_MODEL: qwen2.5:1.5b
+      OLLAMA_EMBEDDING_MODEL: nomic-embed-text
     defaults:
       run:
         working-directory: python
@@ -155,6 +173,43 @@ jobs:
         with:
           python-version: ${{ env.UV_PYTHON }}
           os: ${{ runner.os }}
+      - name: Install Ollama
+        run: curl -fsSL https://ollama.com/install.sh | sh
+        working-directory: .
+      - name: Cache Ollama models
+        uses: actions/cache@v4
+        with:
+          path: ~/.ollama/models
+          key: ollama-models-qwen2.5-1.5b-nomic-embed-text-v1
+      - name: Start Ollama and pull models
+        run: |
+          # Stop any Ollama instance auto-started by the install script
+          pkill ollama || true
+          sleep 2
+          ollama serve &
+          for i in $(seq 1 30); do
+            if curl -sf http://localhost:11434/api/tags > /dev/null 2>&1; then
+              break
+            fi
+            sleep 1
+          done
+          # Pull models with retry for transient 429 rate limits
+          for model in qwen2.5:1.5b nomic-embed-text; do
+            pulled=false
+            for attempt in 1 2 3; do
+              if ollama pull "$model"; then
+                pulled=true
+                break
+              fi
+              echo "Retry $attempt for $model (waiting 15s)..."
+              sleep 15
+            done
+            if [ "$pulled" != "true" ]; then
+              echo "ERROR: Failed to pull $model after 3 attempts"
+              exit 1
+            fi
+          done
+        working-directory: .
       - name: Start local MCP server
         id: local-mcp
         uses: ./.github/actions/setup-local-mcp-server
@@ -173,6 +228,14 @@ jobs:
           -n logical --dist worksteal
           --timeout=120 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 30
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-misc
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
       - name: Stop local MCP server
         if: always()
         shell: bash
@@ -247,8 +310,16 @@ jobs:
           -m integration
           -n logical --dist worksteal
           -x
-          --timeout=360 --session-timeout=900 --timeout_method thread
+          --timeout=480 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-functions
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Foundry integration tests
   python-tests-foundry:
@@ -295,6 +366,61 @@ jobs:
           -n logical --dist worksteal
           --timeout=120 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-foundry
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
+
+  # Foundry Hosting integration tests
+  python-tests-foundry-hosting:
+    name: Python Integration Tests - Foundry Hosting
+    runs-on: ubuntu-latest
+    environment: integration
+    timeout-minutes: 60
+    env:
+      FOUNDRY_PROJECT_ENDPOINT: ${{ vars.FOUNDRY_PROJECT_ENDPOINT }}
+      FOUNDRY_MODEL: ${{ vars.FOUNDRY_MODEL }}
+    defaults:
+      run:
+        working-directory: python
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ inputs.checkout-ref }}
+          persist-credentials: false
+      - name: Set up python and install the project
+        id: python-setup
+        uses: ./.github/actions/python-setup
+        with:
+          python-version: ${{ env.UV_PYTHON }}
+          os: ${{ runner.os }}
+      - name: Azure CLI Login
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+      - name: Test with pytest (Foundry Hosting integration)
+        timeout-minutes: 15
+        run: >
+          uv run pytest --import-mode=importlib
+          packages/foundry_hosting/tests
+          -m integration
+          -n logical --dist worksteal
+          --timeout=120 --session-timeout=900 --timeout_method thread
+          --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-foundry-hosting
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Azure Cosmos integration tests
   python-tests-cosmos:
@@ -339,7 +465,81 @@ jobs:
           echo "Cosmos DB emulator did not become ready in time." >&2
           exit 1
       - name: Test with pytest (Cosmos integration)
-        run: uv run --directory packages/azure-cosmos poe integration-tests -n logical --dist worksteal --timeout=120 --session-timeout=900 --timeout_method thread --retries 2 --retry-delay 5
+        run: uv run --directory packages/azure-cosmos poe integration-tests -n logical --dist worksteal --timeout=120 --session-timeout=900 --timeout_method thread --retries 2 --retry-delay 5 --junitxml=${{ github.workspace }}/python/pytest.xml
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-cosmos
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
+
+  # Integration test trend report (aggregates per-job JUnit XML results)
+  python-integration-test-report:
+    name: Integration Test Report
+    if: >
+      always() &&
+      (contains(join(needs.*.result, ','), 'success') ||
+       contains(join(needs.*.result, ','), 'failure'))
+    needs:
+      [
+        python-tests-openai,
+        python-tests-azure-openai,
+        python-tests-misc-integration,
+        python-tests-functions,
+        python-tests-foundry,
+        python-tests-foundry-hosting,
+        python-tests-cosmos,
+      ]
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: python
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ inputs.checkout-ref }}
+          persist-credentials: false
+      - name: Set up python and install the project
+        uses: ./.github/actions/python-setup
+        with:
+          python-version: ${{ env.UV_PYTHON }}
+          os: ${{ runner.os }}
+      - name: Download all test results from current run
+        uses: actions/download-artifact@v4
+        with:
+          pattern: test-results-*
+          path: test-results/
+      - name: Restore report history cache
+        uses: actions/cache/restore@v4
+        with:
+          path: python/integration-report-history.json
+          key: integration-report-history-integration-${{ github.run_id }}
+          restore-keys: |
+            integration-report-history-integration-
+      - name: Generate trend report
+        run: >
+          uv run python scripts/integration_test_report/aggregate.py
+          ../test-results/
+          integration-report-history.json
+          integration-test-report.md
+      - name: Post to Job Summary
+        if: always()
+        run: cat integration-test-report.md >> $GITHUB_STEP_SUMMARY
+      - name: Save report history cache
+        if: always()
+        uses: actions/cache/save@v4
+        with:
+          path: python/integration-report-history.json
+          key: integration-report-history-integration-${{ github.run_id }}
+      - name: Upload unified trend report
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: integration-test-report
+          path: |
+            python/integration-test-report.md
+            python/integration-report-history.json
 
   python-integration-tests-check:
     if: always()
@@ -352,6 +552,7 @@ jobs:
         python-tests-misc-integration,
         python-tests-functions,
         python-tests-foundry,
+        python-tests-foundry-hosting,
         python-tests-cosmos
       ]
     steps:

.github/workflows/python-merge-tests.yml

@@ -38,6 +38,7 @@ jobs:
       miscChanged: ${{ steps.filter.outputs.misc }}
       functionsChanged: ${{ steps.filter.outputs.functions }}
       foundryChanged: ${{ steps.filter.outputs.foundry }}
+      foundryHostingChanged: ${{ steps.filter.outputs.foundry_hosting }}
       cosmosChanged: ${{ steps.filter.outputs.cosmos }}
     steps:
       - uses: actions/checkout@v6
@@ -80,6 +81,8 @@ jobs:
               - 'python/packages/foundry/**'
               - 'python/samples/**/providers/foundry/**'
               - 'python/samples/02-agents/embeddings/foundry_embeddings.py'
+            foundry_hosting:
+              - 'python/packages/foundry_hosting/**'
             cosmos:
               - 'python/packages/azure-cosmos/**'
       # run only if 'python' files were changed
@@ -181,6 +184,13 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: OpenAI integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-openai
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Azure OpenAI integration tests
   python-tests-azure-openai:
@@ -244,6 +254,13 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: Azure OpenAI integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-azure-openai
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Misc integration tests (Anthropic, Ollama, MCP)
   python-tests-misc-integration:
@@ -261,6 +278,8 @@ jobs:
       ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
       ANTHROPIC_CHAT_MODEL: ${{ vars.ANTHROPIC_CHAT_MODEL_ID }}
       LOCAL_MCP_URL: ${{ vars.LOCAL_MCP__URL }}
+      OLLAMA_MODEL: qwen2.5:1.5b
+      OLLAMA_EMBEDDING_MODEL: nomic-embed-text
     defaults:
       run:
         working-directory: python
@@ -272,6 +291,43 @@ jobs:
         with:
           python-version: ${{ env.UV_PYTHON }}
           os: ${{ runner.os }}
+      - name: Install Ollama
+        run: curl -fsSL https://ollama.com/install.sh | sh
+        working-directory: .
+      - name: Cache Ollama models
+        uses: actions/cache@v4
+        with:
+          path: ~/.ollama/models
+          key: ollama-models-qwen2.5-1.5b-nomic-embed-text-v1
+      - name: Start Ollama and pull models
+        run: |
+          # Stop any Ollama instance auto-started by the install script
+          pkill ollama || true
+          sleep 2
+          ollama serve &
+          for i in $(seq 1 30); do
+            if curl -sf http://localhost:11434/api/tags > /dev/null 2>&1; then
+              break
+            fi
+            sleep 1
+          done
+          # Pull models with retry for transient 429 rate limits
+          for model in qwen2.5:1.5b nomic-embed-text; do
+            pulled=false
+            for attempt in 1 2 3; do
+              if ollama pull "$model"; then
+                pulled=true
+                break
+              fi
+              echo "Retry $attempt for $model (waiting 15s)..."
+              sleep 15
+            done
+            if [ "$pulled" != "true" ]; then
+              echo "ERROR: Failed to pull $model after 3 attempts"
+              exit 1
+            fi
+          done
+        working-directory: .
       - name: Start local MCP server
         id: local-mcp
         uses: ./.github/actions/setup-local-mcp-server
@@ -321,6 +377,13 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: Misc integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-misc
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # Azure Functions + Durable Task integration tests
   python-tests-functions:
@@ -379,7 +442,7 @@ jobs:
           -m integration
           -n logical --dist worksteal
           -x
-          --timeout=360 --session-timeout=900 --timeout_method thread
+          --timeout=480 --session-timeout=900 --timeout_method thread
           --retries 2 --retry-delay 5
           --junitxml=pytest.xml
         working-directory: ./python
@@ -392,6 +455,13 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: Functions integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-functions
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   python-tests-foundry:
     name: Python Integration Tests - Foundry
@@ -409,6 +479,10 @@ jobs:
       FOUNDRY_MODEL: ${{ vars.FOUNDRY_MODEL }}
       FOUNDRY_AGENT_NAME: ${{ vars.FOUNDRY_AGENT_NAME }}
       FOUNDRY_AGENT_VERSION: ${{ vars.FOUNDRY_AGENT_VERSION }}
+      FOUNDRY_MODELS_ENDPOINT: ${{ vars.FOUNDRY_MODELS_ENDPOINT || '' }}
+      FOUNDRY_MODELS_API_KEY: ${{ secrets.FOUNDRY_MODELS_API_KEY || '' }}
+      FOUNDRY_EMBEDDING_MODEL: ${{ vars.FOUNDRY_EMBEDDING_MODEL || '' }}
+      FOUNDRY_IMAGE_EMBEDDING_MODEL: ${{ vars.FOUNDRY_IMAGE_EMBEDDING_MODEL || '' }}
       LOCAL_MCP_URL: ${{ vars.LOCAL_MCP__URL }}
     defaults:
       run:
@@ -448,6 +522,74 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: Test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-foundry
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
+
+  # Foundry Hosting integration tests
+  python-tests-foundry-hosting:
+    name: Python Tests - Foundry Hosting Integration
+    needs: paths-filter
+    if: >
+      github.event_name != 'pull_request' &&
+      needs.paths-filter.outputs.pythonChanges == 'true' &&
+      (github.event_name != 'merge_group' ||
+       needs.paths-filter.outputs.foundryHostingChanged == 'true' ||
+       needs.paths-filter.outputs.coreChanged == 'true')
+    runs-on: ubuntu-latest
+    environment: integration
+    env:
+      FOUNDRY_PROJECT_ENDPOINT: ${{ vars.FOUNDRY_PROJECT_ENDPOINT }}
+      FOUNDRY_MODEL: ${{ vars.FOUNDRY_MODEL }}
+    defaults:
+      run:
+        working-directory: python
+    steps:
+      - uses: actions/checkout@v6
+      - name: Set up python and install the project
+        id: python-setup
+        uses: ./.github/actions/python-setup
+        with:
+          python-version: ${{ env.UV_PYTHON }}
+          os: ${{ runner.os }}
+      - name: Azure CLI Login
+        if: github.event_name != 'pull_request'
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+      - name: Test with pytest (Foundry Hosting integration)
+        timeout-minutes: 15
+        run: >
+          uv run pytest --import-mode=importlib
+          packages/foundry_hosting/tests
+          -m integration
+          -n logical --dist worksteal
+          --timeout=120 --session-timeout=900 --timeout_method thread
+          --retries 2 --retry-delay 5
+          --junitxml=pytest.xml
+        working-directory: ./python
+      - name: Surface failing tests
+        if: always()
+        uses: pmeier/pytest-results-action@v0.7.2
+        with:
+          path: ./python/pytest.xml
+          summary: true
+          display-options: fEX
+          fail-on-empty: false
+          title: Foundry Hosting integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-foundry-hosting
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
 
   # TODO: Add python-tests-lab
 
@@ -497,7 +639,7 @@ jobs:
           echo "Cosmos DB emulator did not become ready in time." >&2
           exit 1
       - name: Test with pytest (Cosmos integration)
-        run: uv run --directory packages/azure-cosmos poe integration-tests -n logical --dist worksteal --timeout=120 --session-timeout=900 --timeout_method thread --retries 2 --retry-delay 5 --junitxml=pytest.xml
+        run: uv run --directory packages/azure-cosmos poe integration-tests -n logical --dist worksteal --timeout=120 --session-timeout=900 --timeout_method thread --retries 2 --retry-delay 5 --junitxml=${{ github.workspace }}/python/pytest.xml
         working-directory: ./python
       - name: Surface failing tests
         if: always()
@@ -508,6 +650,77 @@ jobs:
           display-options: fEX
           fail-on-empty: false
           title: Cosmos integration test results
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-cosmos
+          path: ./python/pytest.xml
+          if-no-files-found: ignore
+
+  # Integration test trend report (aggregates per-job JUnit XML results)
+  python-integration-test-report:
+    name: Integration Test Report
+    if: >
+      always() &&
+      (contains(join(needs.*.result, ','), 'success') ||
+       contains(join(needs.*.result, ','), 'failure'))
+    needs:
+      [
+        python-tests-openai,
+        python-tests-azure-openai,
+        python-tests-misc-integration,
+        python-tests-functions,
+        python-tests-foundry,
+        python-tests-foundry-hosting,
+        python-tests-cosmos,
+      ]
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: python
+    steps:
+      - uses: actions/checkout@v6
+      - name: Set up python and install the project
+        uses: ./.github/actions/python-setup
+        with:
+          python-version: ${{ env.UV_PYTHON }}
+          os: ${{ runner.os }}
+      - name: Download all test results from current run
+        uses: actions/download-artifact@v4
+        with:
+          pattern: test-results-*
+          path: test-results/
+      - name: Restore report history cache
+        uses: actions/cache/restore@v4
+        with:
+          path: python/integration-report-history.json
+          key: integration-report-history-merge-${{ github.run_id }}
+          restore-keys: |
+            integration-report-history-merge-
+      - name: Generate trend report
+        run: >
+          uv run python scripts/integration_test_report/aggregate.py
+          ../test-results/
+          integration-report-history.json
+          integration-test-report.md
+      - name: Post to Job Summary
+        if: always()
+        run: cat integration-test-report.md >> $GITHUB_STEP_SUMMARY
+      - name: Save report history cache
+        if: always()
+        uses: actions/cache/save@v4
+        with:
+          path: python/integration-report-history.json
+          key: integration-report-history-merge-${{ github.run_id }}
+      - name: Upload unified trend report
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: integration-test-report
+          path: |
+            python/integration-test-report.md
+            python/integration-report-history.json
 
   python-integration-tests-check:
     if: always()
@@ -520,6 +733,7 @@ jobs:
         python-tests-misc-integration,
         python-tests-functions,
         python-tests-foundry,
+        python-tests-foundry-hosting,
         python-tests-cosmos,
       ]
     steps:

.gitignore

@@ -136,6 +136,10 @@ celerybeat.pid
 .venv
 env/
 venv/
+
+# Foundry agent CLI (contains secrets, auto-generated)
+.foundry-agent.json
+.foundry-agent-build.log
 ENV/
 env.bak/
 venv.bak/
@@ -238,3 +242,7 @@ python/dotnet-ref
 # Generated filtered solution files (created by eng/scripts/New-FilteredSolution.ps1)
 dotnet/filtered-*.slnx
 **/*.lscache
+
+# Local tool state
+.omc/
+.omx/

dotnet/.gitignore

@@ -402,4 +402,11 @@ FodyWeavers.xsd
 *.msp
 
 # JetBrains Rider
-*.sln.iml
+*.sln.iml
+
+# Foundry agent CLI config (contains secrets, auto-generated)
+.foundry-agent.json
+.foundry-agent-build.log
+
+# Pre-published output for Docker builds
+out/

dotnet/Directory.Packages.props

@@ -22,11 +22,16 @@
     <PackageVersion Include="Aspire.Microsoft.Azure.Cosmos" Version="$(AspireAppHostSdkVersion)" />
     <PackageVersion Include="CommunityToolkit.Aspire.OllamaSharp" Version="13.0.0" />
     <!-- Azure.* -->
+    <PackageVersion Include="Azure.AI.AgentServer.Core" Version="1.0.0-beta.23" />
+    <PackageVersion Include="Azure.AI.AgentServer.Invocations" Version="1.0.0-beta.3" />
+    <PackageVersion Include="Azure.AI.AgentServer.Responses" Version="1.0.0-beta.4" />
     <PackageVersion Include="Azure.AI.Projects" Version="2.0.0" />
     <PackageVersion Include="Azure.AI.Agents.Persistent" Version="1.2.0-beta.10" />
     <PackageVersion Include="Azure.AI.OpenAI" Version="2.9.0-beta.1" />
-    <PackageVersion Include="Azure.Identity" Version="1.20.0" />
-    <PackageVersion Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.4.0" />
+    <PackageVersion Include="Azure.Core" Version="1.53.0" />
+    <PackageVersion Include="Azure.Identity" Version="1.21.0" />
+    <PackageVersion Include="DotNetEnv" Version="3.1.1" />
+    <PackageVersion Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.5.0" />
     <!-- Google Gemini  -->
     <PackageVersion Include="Google.GenAI" Version="1.6.0" />
     <PackageVersion Include="Mscc.GenerativeAI.Microsoft" Version="2.9.3" />
@@ -37,29 +42,29 @@
     <!-- System.* -->
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.6" />
     <PackageVersion Include="Microsoft.Bcl.HashCode" Version="6.0.0" />
-    <PackageVersion Include="Microsoft.Bcl.Memory" Version="10.0.4" />
+    <PackageVersion Include="Microsoft.Bcl.Memory" Version="10.0.5" />
     <PackageVersion Include="System.ClientModel" Version="1.10.0" />
     <PackageVersion Include="System.CodeDom" Version="10.0.0" />
     <PackageVersion Include="System.Collections.Immutable" Version="10.0.1" />
     <PackageVersion Include="System.CommandLine" Version="2.0.0-rc.2.25502.107" />
     <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="10.0.6" />
-    <PackageVersion Include="System.Linq.AsyncEnumerable" Version="10.0.4" />
+    <PackageVersion Include="System.Linq.AsyncEnumerable" Version="10.0.5" />
     <PackageVersion Include="System.Net.Http.Json" Version="10.0.0" />
-    <PackageVersion Include="System.Net.ServerSentEvents" Version="10.0.4" />
+    <PackageVersion Include="System.Net.ServerSentEvents" Version="10.0.5" />
     <PackageVersion Include="System.Text.Json" Version="10.0.6" />
     <PackageVersion Include="System.Threading.Channels" Version="10.0.6" />
     <PackageVersion Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
     <PackageVersion Include="System.Net.Security" Version="4.3.2" />
     <!-- OpenTelemetry -->
-    <PackageVersion Include="OpenTelemetry" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Api" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Exporter.InMemory" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.14.0" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.13.0" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.13.0" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.13.0" />
+    <PackageVersion Include="OpenTelemetry" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Api" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Exporter.InMemory" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.15.3" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.15.2" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.15.1" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.15.1" />
     <!-- Microsoft.AspNetCore.* -->
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="10.0.0" />
@@ -81,6 +86,7 @@
     <PackageVersion Include="Microsoft.Extensions.Configuration.UserSecrets" Version="10.0.1" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.1" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.6" />
+    <PackageVersion Include="Microsoft.Extensions.FileSystemGlobbing" Version="10.0.6" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="10.0.1" />
     <PackageVersion Include="Microsoft.Extensions.Http.Resilience" Version="10.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.1" />
@@ -99,8 +105,8 @@
     <PackageVersion Include="Microsoft.Agents.Authentication.Msal" Version="1.3.171-beta" />
     <PackageVersion Include="Microsoft.Agents.Hosting.AspNetCore" Version="1.3.171-beta" />
     <!-- A2A -->
-    <PackageVersion Include="A2A" Version="0.3.4-preview" />
-    <PackageVersion Include="A2A.AspNetCore" Version="0.3.4-preview" />
+    <PackageVersion Include="A2A" Version="1.0.0-preview2" />
+    <PackageVersion Include="A2A.AspNetCore" Version="1.0.0-preview2" />
     <!-- MCP -->
     <PackageVersion Include="ModelContextProtocol" Version="1.1.0" />
     <!-- Inference SDKs -->
@@ -130,6 +136,8 @@
     <PackageVersion Include="Microsoft.Azure.Functions.Worker.Sdk" Version="2.0.7" />
     <!-- Redis -->
     <PackageVersion Include="StackExchange.Redis" Version="2.10.1" />
+    <!-- Console UX -->
+    <PackageVersion Include="Spectre.Console" Version="0.49.1" />
     <!-- Test -->
     <PackageVersion Include="FluentAssertions" Version="8.8.0" />
     <PackageVersion Include="Microsoft.AspNetCore.TestHost" Condition="'$(TargetFramework)' == 'net8.0'" Version="8.0.22" />
@@ -183,4 +191,4 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
   </ItemGroup>
-</Project>
+</Project>

dotnet/agent-framework-dotnet.slnx

@@ -1,12 +1,9 @@
-<Solution>
+<Solution>
   <Configurations>
     <BuildType Name="Debug" />
     <BuildType Name="Publish" />
     <BuildType Name="Release" />
   </Configurations>
-  <Folder Name="/src/Aspire.Hosting.AgentFramework.DevUI/">
-    <Project Path="src/Aspire.Hosting.AgentFramework.DevUI/Aspire.Hosting.AgentFramework.DevUI.csproj" />
-  </Folder>
   <Folder Name="/Samples/">
     <File Path="samples/AGENTS.md" />
     <File Path="samples/README.md" />
@@ -67,6 +64,7 @@
     <Project Path="samples/02-agents/Agents/Agent_Step17_AdditionalAIContext/Agent_Step17_AdditionalAIContext.csproj" />
     <Project Path="samples/02-agents/Agents/Agent_Step18_CompactionPipeline/Agent_Step18_CompactionPipeline.csproj" />
     <Project Path="samples/02-agents/Agents/Agent_Step19_InFunctionLoopCheckpointing/Agent_Step19_InFunctionLoopCheckpointing.csproj" />
+    <Project Path="samples/02-agents/Agents/Agent_Step20_DynamicFunctionTools/Agent_Step20_DynamicFunctionTools.csproj" />
   </Folder>
   <Folder Name="/Samples/02-agents/DeclarativeAgents/">
     <Project Path="samples/02-agents/DeclarativeAgents/ChatClient/DeclarativeChatClientAgents.csproj" />
@@ -119,6 +117,13 @@
     <Project Path="samples/02-agents/AgentSkills/Agent_Step04_MixedSkills/Agent_Step04_MixedSkills.csproj" />
     <Project Path="samples/02-agents/AgentSkills/Agent_Step05_SkillsWithDI/Agent_Step05_SkillsWithDI.csproj" />
   </Folder>
+  <Folder Name="/Samples/02-agents/Harness/">
+    <File Path="samples/02-agents/Harness/README.md" />
+    <Project Path="samples/02-agents/Harness/Harness_Shared_Console/Harness_Shared_Console.csproj" />
+    <Project Path="samples/02-agents/Harness/Harness_Step01_Research/Harness_Step01_Research.csproj" />
+    <Project Path="samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents/Harness_Step02_Research_WithSubAgents.csproj" />
+    <Project Path="samples/02-agents/Harness/Harness_Step03_DataProcessing/Harness_Step03_DataProcessing.csproj" />
+  </Folder>
   <Folder Name="/Samples/02-agents/AGUI/Step05_StateManagement/">
     <Project Path="samples/02-agents/AGUI/Step05_StateManagement/Client/Client.csproj" />
     <Project Path="samples/02-agents/AGUI/Step05_StateManagement/Server/Server.csproj" />
@@ -162,12 +167,13 @@
     <Project Path="samples/02-agents/AgentsWithFoundry/Agent_Step22_MemorySearch/Agent_Step22_MemorySearch.csproj" />
     <Project Path="samples/02-agents/AgentsWithFoundry/Agent_Step23_LocalMCP/Agent_Step23_LocalMCP.csproj" />
     <Project Path="samples/02-agents/AgentsWithFoundry/Agent_Step24_CodeInterpreterFileDownload/Agent_Step24_CodeInterpreterFileDownload.csproj" />
+    <Project Path="samples/02-agents/AgentsWithFoundry/Agent_Step25_ToolboxServerSideTools/Agent_Step25_ToolboxServerSideTools.csproj" />
   </Folder>
   <Folder Name="/Samples/02-agents/Evaluation/">
-    <Project Path="samples/02-agents/Evaluation/Evaluation_SimpleEval/Evaluation_SimpleEval.csproj" />
     <Project Path="samples/02-agents/Evaluation/Evaluation_CustomEvals/Evaluation_CustomEvals.csproj" />
     <Project Path="samples/02-agents/Evaluation/Evaluation_ExpectedOutputs/Evaluation_ExpectedOutputs.csproj" />
     <Project Path="samples/02-agents/Evaluation/Evaluation_Multimodal/Evaluation_Multimodal.csproj" />
+    <Project Path="samples/02-agents/Evaluation/Evaluation_SimpleEval/Evaluation_SimpleEval.csproj" />
   </Folder>
   <Folder Name="/Samples/02-agents/AgentWithMemory/">
     <File Path="samples/02-agents/AgentWithMemory/README.md" />
@@ -227,6 +233,7 @@
     <Project Path="samples/03-workflows/Declarative/HostedWorkflow/HostedWorkflow.csproj" />
     <Project Path="samples/03-workflows/Declarative/InputArguments/InputArguments.csproj" />
     <Project Path="samples/03-workflows/Declarative/InvokeFunctionTool/InvokeFunctionTool.csproj" />
+    <Project Path="samples/03-workflows/Declarative/InvokeHttpRequest/InvokeHttpRequest.csproj" />
     <Project Path="samples/03-workflows/Declarative/InvokeMcpTool/InvokeMcpTool.csproj" />
     <Project Path="samples/03-workflows/Declarative/Marketing/Marketing.csproj" />
     <Project Path="samples/03-workflows/Declarative/StudentTeacher/StudentTeacher.csproj" />
@@ -283,7 +290,44 @@
   <Folder Name="/Samples/03-workflows/Evaluation/">
     <Project Path="samples/03-workflows/Evaluation/Evaluation_WorkflowEval/Evaluation_WorkflowEval.csproj" />
   </Folder>
-  <Folder Name="/Samples/04-hosting/" />
+  <Folder Name="/Samples/04-hosting/">
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/" />
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/invocations/" />
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/Hosted-Invocations-EchoAgent.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/invocations/Using-Samples/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/invocations/Using-Samples/SimpleInvocationsAgent/SimpleInvocationsAgent.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/" />
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/HostedChatClientAgent.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/HostedFoundryAgent.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-LocalTools/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-LocalTools/HostedLocalTools.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-McpTools/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-McpTools/HostedMcpTools.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-Toolbox/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-Toolbox/HostedToolbox.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-TextRag/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-TextRag/HostedTextRag.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-Workflow-Simple/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-Workflow-Simple/HostedWorkflowSimple.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Using-Samples/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Using-Samples/SimpleAgent/SimpleAgent.csproj" />
+  </Folder>
+  <Folder Name="/Samples/04-hosting/FoundryHostedAgents/responses/Hosted-Workflow-Handoff/">
+    <Project Path="samples/04-hosting/FoundryHostedAgents/responses/Hosted-Workflow-Handoff/HostedWorkflowHandoff.csproj" />
+  </Folder>
   <Folder Name="/Samples/04-hosting/DurableAgents/" />
   <Folder Name="/Samples/04-hosting/DurableAgents/AzureFunctions/">
     <File Path="samples/04-hosting/DurableAgents/AzureFunctions/.editorconfig" />
@@ -307,19 +351,21 @@
     <Project Path="samples/04-hosting/DurableAgents/ConsoleApps/06_LongRunningTools/06_LongRunningTools.csproj" />
     <Project Path="samples/04-hosting/DurableAgents/ConsoleApps/07_ReliableStreaming/07_ReliableStreaming.csproj" />
   </Folder>
-  <Folder Name="/Samples/04-hosting/A2A/">
-    <File Path="samples/04-hosting/A2A/README.md" />
-    <Project Path="samples/04-hosting/A2A/A2AAgent_AsFunctionTools/A2AAgent_AsFunctionTools.csproj" />
-    <Project Path="samples/04-hosting/A2A/A2AAgent_PollingForTaskCompletion/A2AAgent_PollingForTaskCompletion.csproj" />
-  </Folder>
+  <Folder Name="/Samples/02-agents/A2A/">
+    <File Path="samples/02-agents/A2A/README.md" />
+    <Project Path="samples/02-agents/A2A/A2AAgent_AsFunctionTools/A2AAgent_AsFunctionTools.csproj" />
+    <Project Path="samples/02-agents/A2A/A2AAgent_PollingForTaskCompletion/A2AAgent_PollingForTaskCompletion.csproj" />
+    <Project Path="samples/02-agents/A2A/A2AAgent_ProtocolSelection/A2AAgent_ProtocolSelection.csproj" />
+    <Project Path="samples/02-agents/A2A/A2AAgent_StreamReconnection/A2AAgent_StreamReconnection.csproj" />
+  </Folder>  
   <Folder Name="/Samples/05-end-to-end/">
     <Project Path="samples/05-end-to-end/AgentWithPurview/AgentWithPurview.csproj" />
     <Project Path="samples/05-end-to-end/M365Agent/M365Agent.csproj" />
   </Folder>
   <Folder Name="/Samples/05-end-to-end/Evaluation/">
+    <Project Path="samples/05-end-to-end/Evaluation/Evaluation_ConversationSplits/Evaluation_ConversationSplits.csproj" />
     <Project Path="samples/05-end-to-end/Evaluation/Evaluation_FoundryQuality/Evaluation_FoundryQuality.csproj" />
     <Project Path="samples/05-end-to-end/Evaluation/Evaluation_MixedProviders/Evaluation_MixedProviders.csproj" />
-    <Project Path="samples/05-end-to-end/Evaluation/Evaluation_ConversationSplits/Evaluation_ConversationSplits.csproj" />
   </Folder>
   <Folder Name="/Samples/05-end-to-end/A2AClientServer/">
     <File Path="samples/05-end-to-end/A2AClientServer/README.md" />
@@ -338,15 +384,6 @@
     <Project Path="samples/05-end-to-end/AGUIClientServer/AGUIDojoServer/AGUIDojoServer.csproj" />
     <Project Path="samples/05-end-to-end/AGUIClientServer/AGUIServer/AGUIServer.csproj" />
   </Folder>
-  <Folder Name="/Samples/05-end-to-end/HostedAgents/">
-    <Project Path="samples/05-end-to-end/HostedAgents/AgentsInWorkflows/AgentsInWorkflows.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/AgentThreadAndHITL/AgentThreadAndHITL.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/AgentWithHostedMCP/AgentWithHostedMCP.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/AgentWithLocalTools/AgentWithLocalTools.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/AgentWithTextSearchRag/AgentWithTextSearchRag.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/FoundryMultiAgent/FoundryMultiAgent.csproj" />
-    <Project Path="samples/05-end-to-end/HostedAgents/FoundrySingleAgent/FoundrySingleAgent.csproj" />
-  </Folder>
   <Folder Name="/Samples/05-end-to-end/AspNetAgentAuthorization/">
     <File Path="samples/05-end-to-end/AspNetAgentAuthorization/docker-compose.yml" />
     <File Path="samples/05-end-to-end/AspNetAgentAuthorization/README.md" />
@@ -503,18 +540,19 @@
     <File Path="tests/Directory.Build.props" />
   </Folder>
   <Folder Name="/src/">
+    <Project Path="src/Aspire.Hosting.AgentFramework.DevUI/Aspire.Hosting.AgentFramework.DevUI.csproj" />
     <Project Path="src/Microsoft.Agents.AI.A2A/Microsoft.Agents.AI.A2A.csproj" />
     <Project Path="src/Microsoft.Agents.AI.Abstractions/Microsoft.Agents.AI.Abstractions.csproj" />
     <Project Path="src/Microsoft.Agents.AI.AGUI/Microsoft.Agents.AI.AGUI.csproj" />
     <Project Path="src/Microsoft.Agents.AI.Anthropic/Microsoft.Agents.AI.Anthropic.csproj" />
     <Project Path="src/Microsoft.Agents.AI.AzureAI.Persistent/Microsoft.Agents.AI.AzureAI.Persistent.csproj" />
-    <Project Path="src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj" />
     <Project Path="src/Microsoft.Agents.AI.CopilotStudio/Microsoft.Agents.AI.CopilotStudio.csproj" />
     <Project Path="src/Microsoft.Agents.AI.CosmosNoSql/Microsoft.Agents.AI.CosmosNoSql.csproj" />
     <Project Path="src/Microsoft.Agents.AI.Declarative/Microsoft.Agents.AI.Declarative.csproj" />
     <Project Path="src/Microsoft.Agents.AI.DevUI/Microsoft.Agents.AI.DevUI.csproj" />
     <Project Path="src/Microsoft.Agents.AI.DurableTask/Microsoft.Agents.AI.DurableTask.csproj" />
-
+    <Project Path="src/Microsoft.Agents.AI.Foundry.Hosting/Microsoft.Agents.AI.Foundry.Hosting.csproj" />
+    <Project Path="src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj" />
     <Project Path="src/Microsoft.Agents.AI.GitHub.Copilot/Microsoft.Agents.AI.GitHub.Copilot.csproj" />
     <Project Path="src/Microsoft.Agents.AI.Hosting.A2A.AspNetCore/Microsoft.Agents.AI.Hosting.A2A.AspNetCore.csproj" />
     <Project Path="src/Microsoft.Agents.AI.Hosting.A2A/Microsoft.Agents.AI.Hosting.A2A.csproj" />
@@ -536,11 +574,10 @@
   <Folder Name="/Tests/IntegrationTests/">
     <Project Path="tests/AgentConformance.IntegrationTests/AgentConformance.IntegrationTests.csproj" />
     <Project Path="tests/AnthropicChatCompletion.IntegrationTests/AnthropicChatCompletion.IntegrationTests.csproj" />
-    <Project Path="tests/Foundry.IntegrationTests/Foundry.IntegrationTests.csproj" />
     <Project Path="tests/AzureAIAgentsPersistent.IntegrationTests/AzureAIAgentsPersistent.IntegrationTests.csproj" />
     <Project Path="tests/CopilotStudio.IntegrationTests/CopilotStudio.IntegrationTests.csproj" />
+    <Project Path="tests/Foundry.IntegrationTests/Foundry.IntegrationTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/Microsoft.Agents.AI.DurableTask.IntegrationTests.csproj" />
-
     <Project Path="tests/Microsoft.Agents.AI.GitHub.Copilot.IntegrationTests/Microsoft.Agents.AI.GitHub.Copilot.IntegrationTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Hosting.AGUI.AspNetCore.IntegrationTests/Microsoft.Agents.AI.Hosting.AGUI.AspNetCore.IntegrationTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Hosting.AzureFunctions.IntegrationTests/Microsoft.Agents.AI.Hosting.AzureFunctions.IntegrationTests.csproj" />
@@ -557,12 +594,12 @@
     <Project Path="tests/Microsoft.Agents.AI.AGUI.UnitTests/Microsoft.Agents.AI.AGUI.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Anthropic.UnitTests/Microsoft.Agents.AI.Anthropic.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.AzureAI.Persistent.UnitTests/Microsoft.Agents.AI.AzureAI.Persistent.UnitTests.csproj" />
-    <Project Path="tests/Microsoft.Agents.AI.Foundry.UnitTests/Microsoft.Agents.AI.Foundry.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.CosmosNoSql.UnitTests/Microsoft.Agents.AI.CosmosNoSql.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Declarative.UnitTests/Microsoft.Agents.AI.Declarative.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.DevUI.UnitTests/Microsoft.Agents.AI.DevUI.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.DurableTask.UnitTests/Microsoft.Agents.AI.DurableTask.UnitTests.csproj" />
-
+    <Project Path="tests/Microsoft.Agents.AI.Foundry.UnitTests/Microsoft.Agents.AI.Foundry.UnitTests.csproj" />
+    <Project Path="tests/Microsoft.Agents.AI.Foundry.Hosting.UnitTests/Microsoft.Agents.AI.Foundry.Hosting.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.GitHub.Copilot.UnitTests/Microsoft.Agents.AI.GitHub.Copilot.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Hosting.A2A.UnitTests/Microsoft.Agents.AI.Hosting.A2A.UnitTests.csproj" />
     <Project Path="tests/Microsoft.Agents.AI.Hosting.AGUI.AspNetCore.UnitTests/Microsoft.Agents.AI.Hosting.AGUI.AspNetCore.UnitTests.csproj" />

dotnet/agent-framework-release.slnf

@@ -9,6 +9,7 @@
       "src\\Microsoft.Agents.AI.GitHub.Copilot\\Microsoft.Agents.AI.GitHub.Copilot.csproj",
       "src\\Microsoft.Agents.AI.AzureAI.Persistent\\Microsoft.Agents.AI.AzureAI.Persistent.csproj",
       "src\\Microsoft.Agents.AI.Foundry\\Microsoft.Agents.AI.Foundry.csproj",
+      "src\\Microsoft.Agents.AI.Foundry.Hosting\\Microsoft.Agents.AI.Foundry.Hosting.csproj",
       "src\\Microsoft.Agents.AI.CopilotStudio\\Microsoft.Agents.AI.CopilotStudio.csproj",
       "src\\Microsoft.Agents.AI.CosmosNoSql\\Microsoft.Agents.AI.CosmosNoSql.csproj",
       "src\\Microsoft.Agents.AI.Declarative\\Microsoft.Agents.AI.Declarative.csproj",

dotnet/nuget.config

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
     <clear />
@@ -9,4 +9,4 @@
       <package pattern="*" />
     </packageSource>
   </packageSourceMapping>
-</configuration>
+</configuration>

dotnet/nuget/nuget-package.props

@@ -1,13 +1,14 @@
 <Project>
   <PropertyGroup>
     <!-- Central version prefix - applies to all nuget packages. -->
-    <VersionPrefix>1.1.0</VersionPrefix>
+    <VersionPrefix>1.3.0</VersionPrefix>
     <RCNumber>1</RCNumber>
+    <DateSuffix>260423</DateSuffix>
     <PackageVersion Condition="'$(IsReleaseCandidate)' == 'true'">$(VersionPrefix)-rc$(RCNumber)</PackageVersion>
-    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' != ''">$(VersionPrefix)-$(VersionSuffix).260410.1</PackageVersion>
-    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' == ''">$(VersionPrefix)-preview.260410.1</PackageVersion>
+    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' != ''">$(VersionPrefix)-$(VersionSuffix).$(DateSuffix).1</PackageVersion>
+    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' == ''">$(VersionPrefix)-preview.$(DateSuffix).1</PackageVersion>
     <PackageVersion Condition="'$(IsReleased)' == 'true'">$(VersionPrefix)</PackageVersion>
-    <GitTag>1.1.0</GitTag>
+    <GitTag>1.3.0</GitTag>
 
     <Configurations>Debug;Release;Publish</Configurations>
     <IsPackable>true</IsPackable>
@@ -29,7 +30,8 @@
 
     <!-- Report low, moderate, high and critical advisories -->
     <NuGetAuditLevel>low</NuGetAuditLevel>
-    
+
+
     <!-- Default description and tags. Packages can override. -->
     <Authors>Microsoft</Authors>
     <Company>Microsoft</Company>

dotnet/samples/02-agents/A2A/A2AAgent_PollingForTaskCompletion/A2AAgent_PollingForTaskCompletion.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net10.0</TargetFramework>
+    <TargetFrameworks>net10.0</TargetFrameworks>
 
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
@@ -13,7 +13,6 @@
     <PackageReference Include="Azure.AI.OpenAI" />
     <PackageReference Include="Azure.Identity" />
     <PackageReference Include="Microsoft.Extensions.Hosting" />
-    <PackageReference Include="System.Net.ServerSentEvents" />
   </ItemGroup>
 
   <ItemGroup>

dotnet/samples/02-agents/A2A/A2AAgent_PollingForTaskCompletion/Program.cs

@@ -18,8 +18,12 @@ AIAgent agent = agentCard.AsAIAgent();
 
 AgentSession session = await agent.CreateSessionAsync();
 
+// AllowBackgroundResponses must be true so the server returns immediately with a continuation token
+// instead of blocking until the task is complete.
+AgentRunOptions options = new() { AllowBackgroundResponses = true };
+
 // Start the initial run with a long-running task.
-AgentResponse response = await agent.RunAsync("Conduct a comprehensive analysis of quantum computing applications in cryptography, including recent breakthroughs, implementation challenges, and future roadmap. Please include diagrams and visual representations to illustrate complex concepts.", session);
+AgentResponse response = await agent.RunAsync("Conduct a comprehensive analysis of quantum computing applications in cryptography, including recent breakthroughs, implementation challenges, and future roadmap. Please include diagrams and visual representations to illustrate complex concepts.", session, options: options);
 
 // Poll until the response is complete.
 while (response.ContinuationToken is { } token)

dotnet/samples/02-agents/A2A/A2AAgent_ProtocolSelection/A2AAgent_ProtocolSelection.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="A2A" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.A2A\Microsoft.Agents.AI.A2A.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/A2A/A2AAgent_ProtocolSelection/Program.cs

@@ -0,0 +1,36 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to select the A2A protocol binding (HTTP+JSON vs JSON-RPC) when
+// creating an AIAgent from an A2A agent card using A2AClientOptions.PreferredBindings.
+
+using A2A;
+using Microsoft.Agents.AI;
+
+var a2aAgentHost = Environment.GetEnvironmentVariable("A2A_AGENT_HOST") ?? throw new InvalidOperationException("A2A_AGENT_HOST is not set.");
+
+// Initialize an A2ACardResolver to get an A2A agent card.
+A2ACardResolver agentCardResolver = new(new Uri(a2aAgentHost));
+
+// Get the agent card
+AgentCard agentCard = await agentCardResolver.GetAgentCardAsync();
+
+// Use A2AClientOptions to explicitly select the HTTP+JSON protocol binding.
+// This tells the A2A client factory to prefer the HTTP+JSON interface when the agent card
+// advertises multiple supported interfaces.
+A2AClientOptions options = new()
+{
+    PreferredBindings = [ProtocolBindingNames.HttpJson]
+};
+
+// To prefer JSON-RPC instead, use:
+// A2AClientOptions options = new()
+// {
+//     PreferredBindings = [ProtocolBindingNames.JsonRpc]
+// };
+
+// Create an instance of the AIAgent for an existing A2A agent, using the specified protocol binding.
+AIAgent agent = agentCard.AsAIAgent(options: options);
+
+// Invoke the agent and output the text result.
+AgentResponse response = await agent.RunAsync("Tell me a joke about a pirate.");
+Console.WriteLine(response);

dotnet/samples/02-agents/A2A/A2AAgent_ProtocolSelection/README.md

@@ -0,0 +1,27 @@
+# A2A Agent Protocol Selection
+
+This sample demonstrates how to select the A2A protocol binding when creating an `AIAgent` from an A2A agent card.
+
+A2A agents can expose multiple interfaces with different protocol bindings (e.g., HTTP+JSON, JSON-RPC). By default, `AsAIAgent()` prefers HTTP+JSON with JSON-RPC as a fallback. This sample shows how to use `A2AClientOptions.PreferredBindings` to explicitly control which protocol binding is used.
+
+The sample:
+
+- Connects to an A2A agent server specified in the `A2A_AGENT_HOST` environment variable
+- Configures `A2AClientOptions` to prefer the HTTP+JSON protocol binding
+- Creates an `AIAgent` from the resolved agent card using the specified binding
+- Sends a message to the agent and displays the response
+
+## Prerequisites
+
+Before you begin, ensure you have the following prerequisites:
+
+- .NET 10.0 SDK or later
+- An A2A agent server running and accessible via HTTP
+
+**Note**: These samples need to be run against a valid A2A server. If no A2A server is available, they can be run against the echo-agent that can be spun up locally by following the guidelines at: https://github.com/a2aproject/a2a-dotnet/blob/main/samples/AgentServer/README.md
+
+Set the following environment variable:
+
+```powershell
+$env:A2A_AGENT_HOST="http://localhost:5000"  # Replace with your A2A agent server host
+```

dotnet/samples/02-agents/A2A/A2AAgent_StreamReconnection/A2AAgent_StreamReconnection.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="A2A" />
+    <PackageReference Include="Azure.AI.OpenAI" />
+    <PackageReference Include="Azure.Identity" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.A2A\Microsoft.Agents.AI.A2A.csproj" />
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/A2A/A2AAgent_StreamReconnection/Program.cs

@@ -0,0 +1,55 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to reconnect to an A2A agent's streaming response using continuation tokens,
+// allowing recovery from stream interruptions without losing progress.
+
+using A2A;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+var a2aAgentHost = Environment.GetEnvironmentVariable("A2A_AGENT_HOST") ?? throw new InvalidOperationException("A2A_AGENT_HOST is not set.");
+
+// Initialize an A2ACardResolver to get an A2A agent card.
+A2ACardResolver agentCardResolver = new(new Uri(a2aAgentHost));
+
+// Get the agent card
+AgentCard agentCard = await agentCardResolver.GetAgentCardAsync();
+
+// Create an instance of the AIAgent for an existing A2A agent specified by the agent card.
+AIAgent agent = agentCard.AsAIAgent();
+
+AgentSession session = await agent.CreateSessionAsync();
+
+ResponseContinuationToken? continuationToken = null;
+
+await foreach (var update in agent.RunStreamingAsync("Conduct a comprehensive analysis of quantum computing applications in cryptography, including recent breakthroughs, implementation challenges, and future roadmap. Please include diagrams and visual representations to illustrate complex concepts.", session))
+{
+    // Saving the continuation token to be able to reconnect to the same response stream later.
+    // Note: Continuation tokens are only returned for long-running tasks. If the underlying A2A agent
+    // returns a message instead of a task, the continuation token will not be initialized.
+    // A2A agents do not support stream resumption from a specific point in the stream,
+    // but only reconnection to obtain the same response stream from the beginning.
+    // So, A2A agents will return an initialized continuation token in the first update
+    // representing the beginning of the stream, and it will be null in all subsequent updates.
+    if (update.ContinuationToken is { } token)
+    {
+        continuationToken = token;
+    }
+
+    // Imitating stream interruption
+    break;
+}
+
+// Reconnect to the same response stream using the continuation token obtained from the previous run.
+// As a first update, the agent will return an update representing the current state of the response at the moment of calling
+// RunStreamingAsync with the same continuation token, followed by other updates until the end of the stream is reached.
+if (continuationToken is not null)
+{
+    await foreach (var update in agent.RunStreamingAsync(session, options: new() { ContinuationToken = continuationToken }))
+    {
+        if (!string.IsNullOrEmpty(update.Text))
+        {
+            Console.WriteLine(update.Text);
+        }
+    }
+}

dotnet/samples/02-agents/A2A/A2AAgent_StreamReconnection/README.md

@@ -0,0 +1,29 @@
+# A2A Agent Stream Reconnection
+
+This sample demonstrates how to reconnect to an A2A agent's streaming response using continuation tokens, allowing recovery from stream interruptions without losing progress.
+
+The sample:
+
+- Connects to an A2A agent server specified in the `A2A_AGENT_HOST` environment variable
+- Sends a request to the agent and begins streaming the response
+- Captures a continuation token from the stream for later reconnection
+- Simulates a stream interruption by breaking out of the streaming loop
+- Reconnects to the same response stream using the captured continuation token
+- Displays the response received after reconnection
+
+This pattern is useful when network interruptions or other failures may disrupt an ongoing streaming response, and you need to recover and continue processing.
+
+> **Note:** Continuation tokens are only available when the underlying A2A agent returns a task. If the agent returns a message instead, the continuation token will not be initialized and stream reconnection is not applicable.
+
+# Prerequisites
+
+Before you begin, ensure you have the following prerequisites:
+
+- .NET 10.0 SDK or later
+- An A2A agent server running and accessible via HTTP
+
+Set the following environment variable:
+
+```powershell
+$env:A2A_AGENT_HOST="http://localhost:5000"  # Replace with your A2A agent server host
+```

dotnet/samples/02-agents/A2A/README.md

@@ -3,7 +3,7 @@
 These samples demonstrate how to work with Agent-to-Agent (A2A) specific features in the Agent Framework.
 
 For other samples that demonstrate how to use AIAgent instances,
-see the [Getting Started With Agents](../../02-agents/Agents/README.md) samples.
+see the [Getting Started With Agents](../Agents/README.md) samples.
 
 ## Prerequisites
 
@@ -15,6 +15,8 @@ See the README.md for each sample for the prerequisites for that sample.
 |---|---|
 |[A2A Agent As Function Tools](./A2AAgent_AsFunctionTools/)|This sample demonstrates how to represent an A2A agent as a set of function tools, where each function tool corresponds to a skill of the A2A agent, and register these function tools with another AI agent so it can leverage the A2A agent's skills.|
 |[A2A Agent Polling For Task Completion](./A2AAgent_PollingForTaskCompletion/)|This sample demonstrates how to poll for long-running task completion using continuation tokens with an A2A agent.|
+|[A2A Agent Stream Reconnection](./A2AAgent_StreamReconnection/)|This sample demonstrates how to reconnect to an A2A agent's streaming response using continuation tokens, allowing recovery from stream interruptions.|
+|[A2A Agent Protocol Selection](./A2AAgent_ProtocolSelection/)|This sample demonstrates how to select the A2A protocol binding (HTTP+JSON vs JSON-RPC) when creating an AIAgent from an A2A agent card using A2AClientOptions.|
 
 ## Running the samples from the console
 

dotnet/samples/02-agents/AgentSkills/SubprocessScriptRunner.cs

@@ -5,16 +5,16 @@
 // This is provided for demonstration purposes only.
 
 using System.Diagnostics;
+using System.Text.Json;
 using Microsoft.Agents.AI;
-using Microsoft.Extensions.AI;
 
 /// <summary>
 /// Executes file-based skill scripts as local subprocesses.
 /// </summary>
 /// <remarks>
-/// This runner uses the script's absolute path, converts the arguments
-/// to CLI flags, and returns captured output. It is intended for
-/// demonstration purposes only.
+/// This runner uses the script's absolute path and converts the arguments
+/// to CLI arguments. When the LLM sends a JSON array, each element is used
+/// as a positional argument. It is intended for demonstration purposes only.
 /// </remarks>
 internal static class SubprocessScriptRunner
 {
@@ -24,7 +24,8 @@ internal static class SubprocessScriptRunner
     public static async Task<object?> RunAsync(
         AgentFileSkill skill,
         AgentFileSkillScript script,
-        AIFunctionArguments arguments,
+        JsonElement? arguments,
+        IServiceProvider? serviceProvider,
         CancellationToken cancellationToken)
     {
         if (!File.Exists(script.FullPath))
@@ -61,24 +62,27 @@ internal static class SubprocessScriptRunner
             startInfo.FileName = script.FullPath;
         }
 
-        if (arguments is not null)
+        if (arguments is { ValueKind: JsonValueKind.Array } json)
         {
-            foreach (var (key, value) in arguments)
+            // Positional CLI arguments
+            foreach (var element in json.EnumerateArray())
             {
-                if (value is bool boolValue)
+                if (element.ValueKind != JsonValueKind.String)
                 {
-                    if (boolValue)
-                    {
-                        startInfo.ArgumentList.Add(NormalizeKey(key));
-                    }
-                }
-                else if (value is not null)
-                {
-                    startInfo.ArgumentList.Add(NormalizeKey(key));
-                    startInfo.ArgumentList.Add(value.ToString()!);
+                    throw new InvalidOperationException(
+                        $"File-based skill scripts only accept string CLI arguments but received a JSON element of kind '{element.ValueKind}'. " +
+                        "All array elements must be JSON strings.");
                 }
+
+                startInfo.ArgumentList.Add(element.GetString()!);
             }
         }
+        else if (arguments is not null && arguments.Value.ValueKind != JsonValueKind.Null && arguments.Value.ValueKind != JsonValueKind.Undefined)
+        {
+            throw new InvalidOperationException(
+                $"Expected a JSON array of CLI arguments but received {arguments.Value.ValueKind}. " +
+                "File-based skill scripts expect positional arguments as a JSON array of strings.");
+        }
 
         Process? process = null;
         try
@@ -128,10 +132,4 @@ internal static class SubprocessScriptRunner
             process?.Dispose();
         }
     }
-
-    /// <summary>
-    /// Normalizes a parameter key to a consistent --flag format.
-    /// Models may return keys with or without leading dashes (e.g., "value" vs "--value").
-    /// </summary>
-    private static string NormalizeKey(string key) => "--" + key.TrimStart('-');
 }

dotnet/samples/02-agents/Agents/Agent_Step20_DynamicFunctionTools/Agent_Step20_DynamicFunctionTools.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Azure.AI.OpenAI" />
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/Agents/Agent_Step20_DynamicFunctionTools/Program.cs

@@ -0,0 +1,281 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to dynamically expand the set of function tools available to an
+// agent during a function-calling loop. The agent starts with a single "RequestTools" function.
+// When the model calls RequestTools with a description of the capabilities needed, the function
+// uses the ambient FunctionInvocationContext to add new tools to ChatOptions.Tools. The agent
+// can then use the newly added tools in subsequent iterations of the same function-calling loop.
+
+using System.ComponentModel;
+using Azure.AI.OpenAI;
+using Azure.Identity;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-5.4-mini";
+
+// Pre-defined tool implementations that can be loaded on demand.
+[Description("Get the current weather for a city.")]
+static string GetWeather([Description("The city name.")] string city) =>
+    city.ToUpperInvariant() switch
+    {
+        "SEATTLE" => "Seattle: 55°F, cloudy with light rain.",
+        "NEW YORK" => "New York: 72°F, sunny and warm.",
+        "LONDON" => "London: 48°F, overcast with fog.",
+        _ => $"{city}: weather data not available, please provide one of the following city names: 'Seattle', 'New York', 'London'."
+    };
+
+[Description("Get the current local time for a city.")]
+static string GetTime([Description("The city name.")] string city) =>
+    city.ToUpperInvariant() switch
+    {
+        "SEATTLE" => "Seattle: 9:00 AM PST",
+        "NEW YORK" => "New York: 12:00 PM EST",
+        "LONDON" => "London: 5:00 PM GMT",
+        _ => $"{city}: time data not available, please provide one of the following city names: 'Seattle', 'New York', 'London'."
+    };
+
+[Description("Convert a temperature from Fahrenheit to Celsius.")]
+static string ConvertFahrenheitToCelsius([Description("The temperature in Fahrenheit.")] double fahrenheit) =>
+    $"{fahrenheit}°F = {(fahrenheit - 32) * 5 / 9:F1}°C";
+
+// A registry of tool sets that can be loaded by description keyword.
+Dictionary<string, List<AITool>> toolCatalog = new(StringComparer.OrdinalIgnoreCase)
+{
+    ["weather"] = [AIFunctionFactory.Create(GetWeather, name: "GetWeather")],
+    ["time"] = [AIFunctionFactory.Create(GetTime, name: "GetTime")],
+    ["temperature"] = [AIFunctionFactory.Create(ConvertFahrenheitToCelsius, name: "ConvertFahrenheitToCelsius")],
+};
+
+// The RequestTools function uses the ambient FunctionInvocationContext to add tools dynamically.
+AIFunction requestToolsFunction = AIFunctionFactory.Create(
+    [Description("Request additional tools to be loaded based on a description of the functionality needed. " +
+                 "Call this when you need capabilities that are not yet available in your current tool set.")] (
+        [Description("A description of the functionality required, e.g. 'weather', 'time', or 'temperature conversion'.")] string description
+    ) =>
+    {
+        // Access the ambient FunctionInvocationContext provided by FunctionInvokingChatClient.
+        var context = FunctionInvokingChatClient.CurrentContext
+            ?? throw new InvalidOperationException("No ambient FunctionInvocationContext available.");
+
+        var tools = context.Options?.Tools;
+        if (tools is null)
+        {
+            return "Unable to register new tools: ChatOptions.Tools is not available.";
+        }
+
+        // Find matching tool sets from the catalog.
+        List<string> addedToolNames = [];
+        foreach (var kvp in toolCatalog)
+        {
+            var keyword = kvp.Key;
+            var catalogTools = kvp.Value;
+            if (description.Contains(keyword, StringComparison.OrdinalIgnoreCase))
+            {
+                foreach (var tool in catalogTools)
+                {
+                    // Avoid adding duplicates.
+                    if (tool is AIFunction fn && !tools.Any(t => t is AIFunction existing && existing.Name == fn.Name))
+                    {
+                        tools.Add(tool);
+                        addedToolNames.Add(fn.Name);
+                    }
+                }
+            }
+        }
+
+        return addedToolNames.Count > 0
+            ? "Successfully loaded tools"
+            : $"No tools matched the description '{description}'. Available categories: {string.Join(", ", toolCatalog.Keys)}.";
+    },
+    name: "RequestTools");
+
+// Create the agent with only the RequestTools function initially.
+// Insert chat client middleware that logs the tools available on each LLM call,
+// making the dynamic expansion visible in the console output.
+// WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
+// In production, consider using a specific credential (e.g., ManagedIdentityCredential) to avoid
+// latency issues, unintended credential probing, and potential security risks from fallback mechanisms.
+AIAgent agent = new AzureOpenAIClient(
+    new Uri(endpoint),
+    new DefaultAzureCredential())
+    .GetChatClient(deploymentName)
+    .AsIChatClient()
+    .AsBuilder()
+    .Use(getResponseFunc: ToolLoggingMiddleware, getStreamingResponseFunc: ToolLoggingStreamingMiddleware)
+    .BuildAIAgent(
+        instructions: """
+            You are a helpful assistant. You start with limited tools.
+            When you need functionality that you don't currently have, call RequestTools with a description
+            of what you need. After new tools are loaded, use them to answer the user's question.
+            """,
+        tools: [requestToolsFunction]);
+
+// Run a conversation that triggers dynamic tool expansion.
+Console.WriteLine("=== Dynamic Function Tools Sample ===\n");
+
+string[] prompts =
+[
+    "What's the weather like in Seattle and London?",
+    "What time is it in New York?",
+    "Can you convert those temperatures to Celsius?"
+];
+
+// --- Non-Streaming Mode ---
+Console.ForegroundColor = ConsoleColor.Yellow;
+Console.WriteLine("=== Non-Streaming Mode ===");
+Console.ResetColor();
+Console.WriteLine();
+
+AgentSession session = await agent.CreateSessionAsync();
+
+foreach (var prompt in prompts)
+{
+    Console.ForegroundColor = ConsoleColor.Green;
+    Console.Write("[User] ");
+    Console.ResetColor();
+    Console.WriteLine(prompt);
+
+    var response = await agent.RunAsync(prompt, session);
+
+    // Print all message contents including tool calls, tool results, and text.
+    foreach (var message in response.Messages)
+    {
+        foreach (var content in message.Contents)
+        {
+            switch (content)
+            {
+                case FunctionCallContent functionCall:
+                    Console.ForegroundColor = ConsoleColor.Yellow;
+                    Console.WriteLine($"  [Tool Call] {functionCall.Name}({string.Join(", ", functionCall.Arguments?.Select(a => $"{a.Key}: {a.Value}") ?? [])})");
+                    Console.ResetColor();
+                    break;
+
+                case FunctionResultContent functionResult:
+                    Console.ForegroundColor = ConsoleColor.DarkYellow;
+                    Console.WriteLine($"  [Tool Result] {functionResult.CallId} => {functionResult.Result}");
+                    Console.ResetColor();
+                    break;
+
+                case TextContent textContent when !string.IsNullOrWhiteSpace(textContent.Text):
+                    Console.ForegroundColor = ConsoleColor.Cyan;
+                    Console.Write("[Agent] ");
+                    Console.ResetColor();
+                    Console.WriteLine(textContent.Text);
+                    break;
+            }
+        }
+    }
+
+    Console.WriteLine();
+}
+
+// --- Streaming Mode ---
+Console.ForegroundColor = ConsoleColor.Yellow;
+Console.WriteLine("=== Streaming Mode ===");
+Console.ResetColor();
+Console.WriteLine();
+
+AgentSession streamingSession = await agent.CreateSessionAsync();
+
+foreach (var prompt in prompts)
+{
+    Console.ForegroundColor = ConsoleColor.Green;
+    Console.Write("[User] ");
+    Console.ResetColor();
+    Console.WriteLine(prompt);
+
+    bool inAgentText = false;
+
+    await foreach (var update in agent.RunStreamingAsync(prompt, streamingSession))
+    {
+        foreach (var content in update.Contents)
+        {
+            switch (content)
+            {
+                case FunctionCallContent functionCall:
+                    if (inAgentText)
+                    {
+                        Console.WriteLine();
+                        inAgentText = false;
+                    }
+
+                    Console.ForegroundColor = ConsoleColor.Yellow;
+                    Console.WriteLine($"  [Tool Call] {functionCall.Name}({string.Join(", ", functionCall.Arguments?.Select(a => $"{a.Key}: {a.Value}") ?? [])})");
+                    Console.ResetColor();
+                    break;
+
+                case FunctionResultContent functionResult:
+                    Console.ForegroundColor = ConsoleColor.DarkYellow;
+                    Console.WriteLine($"  [Tool Result] {functionResult.CallId} => {functionResult.Result}");
+                    Console.ResetColor();
+                    break;
+
+                case TextContent textContent when !string.IsNullOrWhiteSpace(textContent.Text):
+                    if (!inAgentText)
+                    {
+                        Console.ForegroundColor = ConsoleColor.Cyan;
+                        Console.Write("[Agent] ");
+                        Console.ResetColor();
+                        inAgentText = true;
+                    }
+
+                    Console.Write(textContent.Text);
+                    break;
+            }
+        }
+    }
+
+    if (inAgentText)
+    {
+        Console.WriteLine();
+    }
+
+    Console.WriteLine();
+}
+
+// Chat client middleware that logs the number and names of tools on each LLM request.
+async Task<ChatResponse> ToolLoggingMiddleware(
+    IEnumerable<ChatMessage> messages,
+    ChatOptions? options,
+    IChatClient innerChatClient,
+    CancellationToken cancellationToken)
+{
+    LogTools(options);
+
+    return await innerChatClient.GetResponseAsync(messages, options, cancellationToken);
+}
+
+// Streaming version of the tool logging middleware.
+async IAsyncEnumerable<ChatResponseUpdate> ToolLoggingStreamingMiddleware(
+    IEnumerable<ChatMessage> messages,
+    ChatOptions? options,
+    IChatClient innerChatClient,
+    [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken)
+{
+    LogTools(options);
+
+    await foreach (var update in innerChatClient.GetStreamingResponseAsync(messages, options, cancellationToken))
+    {
+        yield return update;
+    }
+}
+
+// Shared helper to log the current tool set.
+void LogTools(ChatOptions? options)
+{
+    if (options?.Tools is { Count: > 0 } tools)
+    {
+        var toolNames = tools.OfType<AIFunction>().Select(t => t.Name);
+        Console.ForegroundColor = ConsoleColor.DarkGray;
+        Console.WriteLine($"  [Middleware] LLM call with {tools.Count} tool(s): {string.Join(", ", toolNames)}");
+        Console.ResetColor();
+    }
+    else
+    {
+        Console.ForegroundColor = ConsoleColor.DarkGray;
+        Console.WriteLine("  [Middleware] LLM call with 0 tools");
+        Console.ResetColor();
+    }
+}

dotnet/samples/02-agents/Agents/Agent_Step20_DynamicFunctionTools/README.md

@@ -0,0 +1,38 @@
+# Dynamic Function Tools
+
+This sample demonstrates how to dynamically expand the set of function tools available to an agent during a function-calling loop.
+
+## What it demonstrates
+
+- The agent starts with only a single `RequestTools` function
+- When the model needs capabilities it doesn't have, it calls `RequestTools` with a description of the functionality needed
+- The `RequestTools` function uses the ambient `FunctionInvokingChatClient.CurrentContext` to access `ChatOptions.Tools` and add new tools at runtime
+- The agent then uses the newly added tools in subsequent iterations of the same function-calling loop
+
+## How it works
+
+1. A tool catalog maps keywords (e.g. "weather", "time", "temperature") to pre-built `AIFunction` instances
+2. The `RequestTools` function matches the description against catalog keywords and adds matching tools to `ChatOptions.Tools`
+3. `FunctionInvokingChatClient` automatically picks up the new tools on the next iteration of its loop
+
+## Prerequisites
+
+- .NET 10 SDK or later
+- Azure OpenAI service endpoint and deployment configured
+- Azure CLI installed and authenticated (for Azure credential authentication)
+- User has the `Cognitive Services OpenAI Contributor` role for the Azure OpenAI resource
+
+## Running the sample
+
+Set the required environment variables:
+
+```powershell
+$env:AZURE_OPENAI_ENDPOINT="https://your-resource.openai.azure.com/"
+$env:AZURE_OPENAI_DEPLOYMENT_NAME="gpt-5.4-mini"  # Optional, defaults to gpt-5.4-mini
+```
+
+Run the sample:
+
+```powershell
+dotnet run
+```

dotnet/samples/02-agents/Agents/README.md

@@ -46,6 +46,7 @@ Before you begin, ensure you have the following prerequisites:
 |[Providing additional AI Context to an agent using multiple AIContextProviders](./Agent_Step17_AdditionalAIContext/)|This sample demonstrates how to inject additional AI context into a ChatClientAgent using multiple custom AIContextProvider components that are attached to the agent.|
 |[Using compaction pipeline with an agent](./Agent_Step18_CompactionPipeline/)|This sample demonstrates how to use a compaction pipeline to efficiently limit the size of the conversation history for an agent.|
 |[In-function-loop checkpointing](./Agent_Step19_InFunctionLoopCheckpointing/)|This sample demonstrates how to persist chat history after each service call during a tool-calling loop, enabling crash recovery and mid-run observability.|
+|[Dynamic function tools](./Agent_Step20_DynamicFunctionTools/)|This sample demonstrates how to dynamically expand the set of function tools available to an agent during a function-calling loop using the ambient FunctionInvocationContext.|
 
 ## Running the samples from the console
 

dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step25_ToolboxServerSideTools/Agent_Step25_ToolboxServerSideTools.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Foundry.Hosting\Microsoft.Agents.AI.Foundry.Hosting.csproj" />
+    <PackageReference Include="Azure.AI.Projects" VersionOverride="2.1.0-beta.1" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step25_ToolboxServerSideTools/Program.cs

@@ -0,0 +1,148 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample shows how to load a Foundry toolbox and pass its tools as server-side
+// tools when creating an agent. The Foundry platform handles tool execution — the agent
+// process does not invoke tools locally.
+
+using System.ClientModel;
+using System.ClientModel.Primitives;
+using Azure.AI.Projects;
+using Azure.AI.Projects.Agents;
+using Azure.Identity;
+using Microsoft.Agents.AI;
+using OpenAI.Responses;
+
+#pragma warning disable OPENAI001 // Experimental API
+#pragma warning disable AAIP001  // AgentToolboxes is experimental
+#pragma warning disable CS8321   // Local functions may be commented-out alternatives
+
+// Replace with your own Foundry toolbox name.
+const string ToolboxName = "research_toolbox";
+// Used only by CombineToolboxes — swap in a second toolbox you own.
+const string SecondToolboxName = "analysis_toolbox";
+// Replace with any question that exercises the tools configured in your toolbox.
+const string Query = "Introduce yourself and briefly describe the tools you can use to help me.";
+
+string endpoint = Environment.GetEnvironmentVariable("FOUNDRY_PROJECT_ENDPOINT")
+    ?? throw new InvalidOperationException("Set FOUNDRY_PROJECT_ENDPOINT to your Foundry project endpoint.");
+string model = Environment.GetEnvironmentVariable("FOUNDRY_MODEL") ?? "gpt-5.4-mini";
+
+// WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
+// In production, consider using a specific credential (e.g., ManagedIdentityCredential) to avoid
+// latency issues, unintended credential probing, and potential security risks from fallback mechanisms.
+var projectClient = new AIProjectClient(new Uri(endpoint), new DefaultAzureCredential());
+
+await Main(projectClient, model, endpoint);
+// await CombineToolboxes(projectClient, model, endpoint);
+
+// ---------------------------------------------------------------------------
+// Main: single toolbox
+// ---------------------------------------------------------------------------
+static async Task Main(AIProjectClient projectClient, string model, string endpoint)
+{
+    Console.WriteLine("=== Foundry Toolbox Server-Side Tools Example ===");
+
+    // Comment out if the toolbox already exists in your Foundry project.
+    await CreateSampleToolboxAsync(ToolboxName, endpoint);
+
+    // Omit the version to resolve the toolbox's current default version at runtime.
+    var tools = await projectClient.GetToolboxToolsAsync(ToolboxName);
+
+    AIAgent agent = projectClient
+        .AsAIAgent(
+            model: model,
+            instructions: "You are a research assistant. Use the available tools to answer questions.",
+            tools: tools.ToList());
+
+    Console.WriteLine($"User: {Query}");
+    Console.WriteLine($"Result: {await agent.RunAsync(Query)}\n");
+}
+
+// ---------------------------------------------------------------------------
+// Alternative: combine tools from multiple toolboxes
+// ---------------------------------------------------------------------------
+static async Task CombineToolboxes(AIProjectClient projectClient, string model, string endpoint)
+{
+    Console.WriteLine("=== Combine Toolboxes Example ===");
+
+    // Comment out if the toolboxes already exist in your Foundry project.
+    await CreateSampleToolboxAsync(ToolboxName, endpoint);
+    await CreateSampleToolboxAsync(SecondToolboxName, endpoint);
+
+    var toolboxA = await projectClient.GetToolboxToolsAsync(ToolboxName);
+    var toolboxB = await projectClient.GetToolboxToolsAsync(SecondToolboxName);
+
+    var allTools = toolboxA.Concat(toolboxB).ToList();
+
+    AIAgent agent = projectClient
+        .AsAIAgent(
+            model: model,
+            instructions: "You are a research assistant. Use all available tools to answer questions.",
+            tools: allTools);
+
+    Console.WriteLine($"User: {Query}");
+    Console.WriteLine($"Combined-toolbox result: {await agent.RunAsync(Query)}\n");
+}
+
+// ---------------------------------------------------------------------------
+// Helper: create (or replace) a sample toolbox so the sample works out-of-the-box
+// ---------------------------------------------------------------------------
+static async Task CreateSampleToolboxAsync(string name, string endpoint)
+{
+    // Toolboxes are normally configured in the Foundry portal or a deployment
+    // script, not the application itself. This helper exists so the sample can
+    // be run end-to-end without first setting a toolbox up by hand.
+
+    // The Foundry-Features header is currently required for toolbox CRUD operations.
+    var options = new AgentAdministrationClientOptions();
+    options.AddPolicy(new FoundryFeaturesPolicy("Toolboxes=V1Preview"), PipelinePosition.PerCall);
+    var adminClient = new AgentAdministrationClient(
+        new Uri(endpoint),
+        new DefaultAzureCredential(),
+        options);
+    var toolboxClient = adminClient.GetAgentToolboxes();
+
+    // Delete existing toolbox if present (ignore 404).
+    try
+    {
+        await toolboxClient.DeleteToolboxAsync(name);
+        Console.WriteLine($"Deleted existing toolbox '{name}'");
+    }
+    catch (ClientResultException ex) when (ex.Status == 404)
+    {
+        // Toolbox does not exist — nothing to delete.
+    }
+
+    // Create a fresh version with a single MCP tool.
+    ProjectsAgentTool mcpTool = ProjectsAgentTool.AsProjectTool(ResponseTool.CreateMcpTool(
+        serverLabel: "api-specs",
+        serverUri: new Uri("https://gitmcp.io/Azure/azure-rest-api-specs"),
+        toolCallApprovalPolicy: new McpToolCallApprovalPolicy(GlobalMcpToolCallApprovalPolicy.NeverRequireApproval)));
+
+    var created = (await toolboxClient.CreateToolboxVersionAsync(
+        name: name,
+        tools: [mcpTool],
+        description: "Sample toolbox with an MCP tool — created by Agent_Step25 sample.")).Value;
+
+    Console.WriteLine($"Created toolbox '{created.Name}' v{created.Version} ({created.Tools.Count} tool(s))");
+}
+
+// ---------------------------------------------------------------------------
+// Pipeline policy that adds the Foundry-Features header for toolbox CRUD
+// ---------------------------------------------------------------------------
+internal sealed class FoundryFeaturesPolicy(string feature) : PipelinePolicy
+{
+    private const string FeatureHeader = "Foundry-Features";
+
+    public override void Process(PipelineMessage message, IReadOnlyList<PipelinePolicy> pipeline, int currentIndex)
+    {
+        message.Request.Headers.Add(FeatureHeader, feature);
+        ProcessNext(message, pipeline, currentIndex);
+    }
+
+    public override ValueTask ProcessAsync(PipelineMessage message, IReadOnlyList<PipelinePolicy> pipeline, int currentIndex)
+    {
+        message.Request.Headers.Add(FeatureHeader, feature);
+        return ProcessNextAsync(message, pipeline, currentIndex);
+    }
+}

dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step25_ToolboxServerSideTools/README.md

@@ -0,0 +1,46 @@
+# Agent_Step25_ToolboxServerSideTools
+
+This sample demonstrates loading a named Foundry toolbox and passing its tools as
+**server-side tools** when creating an agent via `AsAIAgent()`.
+
+When tools from a toolbox are passed this way, they are sent as tool definitions in
+the Responses API request. The Foundry platform handles tool execution — the agent
+process does not invoke tools locally.
+
+This is the dotnet equivalent of the Python sample:
+`python/samples/02-agents/providers/foundry/foundry_chat_client_with_toolbox.py`
+
+## Prerequisites
+
+- A Microsoft Foundry project
+- `AZURE_AI_PROJECT_ENDPOINT` environment variable set to your Foundry project endpoint
+- `AZURE_AI_MODEL_DEPLOYMENT_NAME` environment variable set (defaults to `gpt-5.4-mini`)
+
+The sample recreates the toolbox on each run, replacing any existing toolbox with
+the same name. Comment out the `CreateSampleToolboxAsync` call if you want to keep
+an existing toolbox unchanged.
+
+## How it works
+
+1. `projectClient.GetToolboxVersionAsync(name)` fetches the toolbox definition from the
+   Foundry project API (resolving the default version if none is specified)
+2. `ToolboxVersion.ToAITools()` converts each tool definition to an `AITool` instance
+3. The tools are passed to `AsAIAgent(tools: ...)` which includes them in the Responses
+   API request as server-side tool definitions
+
+For a one-liner, use `projectClient.GetToolboxToolsAsync(name)` to fetch and convert in one call.
+
+## Sample flows
+
+| Flow | Description |
+|------|-------------|
+| `Main` (default) | Loads a single toolbox and runs an agent with its tools |
+| `CombineToolboxes` | Loads two toolboxes and merges their tools into one agent |
+
+Uncomment the desired flow in the top-level statements to try each one.
+
+## Running the sample
+
+```bash
+dotnet run
+```

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Commands/ICommandHandler.cs

@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+
+namespace Harness.Shared.Console.Commands;
+
+/// <summary>
+/// Handles a console command (e.g., /todos, /mode). Command handlers are checked
+/// in order before user input is sent to the agent. The first handler that
+/// accepts the input prevents further handlers from being checked.
+/// </summary>
+public interface ICommandHandler
+{
+    /// <summary>
+    /// Gets the help text for this command, displayed in the console header.
+    /// Returns <see langword="null"/> if the command is not currently available.
+    /// </summary>
+    /// <returns>Help text like <c>"/todos (show todo list)"</c>, or <see langword="null"/>.</returns>
+    string? GetHelpText();
+
+    /// <summary>
+    /// Attempts to handle the given user input.
+    /// </summary>
+    /// <param name="input">The raw user input string.</param>
+    /// <param name="session">The current agent session.</param>
+    /// <returns><see langword="true"/> if this handler handled the input; <see langword="false"/> otherwise.</returns>
+    bool TryHandle(string input, AgentSession session);
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Commands/ModeCommandHandler.cs

@@ -0,0 +1,69 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+
+namespace Harness.Shared.Console.Commands;
+
+/// <summary>
+/// Handles the <c>/mode</c> command to display or switch the current agent mode.
+/// </summary>
+internal sealed class ModeCommandHandler : ICommandHandler
+{
+    private readonly AgentModeProvider? _modeProvider;
+    private readonly IReadOnlyDictionary<string, ConsoleColor>? _modeColors;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ModeCommandHandler"/> class.
+    /// </summary>
+    /// <param name="modeProvider">The mode provider, or <see langword="null"/> if not available.</param>
+    /// <param name="modeColors">Optional mapping of mode names to console colors.</param>
+    public ModeCommandHandler(AgentModeProvider? modeProvider, IReadOnlyDictionary<string, ConsoleColor>? modeColors = null)
+    {
+        this._modeProvider = modeProvider;
+        this._modeColors = modeColors;
+    }
+
+    /// <inheritdoc/>
+    public string? GetHelpText() => this._modeProvider is not null ? "/mode [plan|execute] (show or switch mode)" : null;
+
+    /// <inheritdoc/>
+    public bool TryHandle(string input, AgentSession session)
+    {
+        if (!input.StartsWith("/mode ", StringComparison.OrdinalIgnoreCase) && !input.Equals("/mode", StringComparison.OrdinalIgnoreCase))
+        {
+            return false;
+        }
+
+        if (this._modeProvider is null)
+        {
+            System.Console.WriteLine("AgentModeProvider is not available.");
+            return true;
+        }
+
+        string[] parts = input.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        if (parts.Length < 2)
+        {
+            string current = this._modeProvider.GetMode(session);
+            System.Console.WriteLine($"\n  Current mode: {current}\n");
+            return true;
+        }
+
+        string newMode = parts[1];
+
+        try
+        {
+            this._modeProvider.SetMode(session, newMode);
+            System.Console.ForegroundColor = ConsoleWriter.GetModeColor(newMode, this._modeColors);
+            System.Console.WriteLine($"\n  Switched to {newMode} mode.\n");
+            System.Console.ResetColor();
+        }
+        catch (ArgumentException ex)
+        {
+            System.Console.ForegroundColor = ConsoleColor.Red;
+            System.Console.WriteLine($"\n  {ex}\n");
+            System.Console.ResetColor();
+        }
+
+        return true;
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Commands/TodoCommandHandler.cs

@@ -0,0 +1,66 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+
+namespace Harness.Shared.Console.Commands;
+
+/// <summary>
+/// Handles the <c>/todos</c> command to display the current todo list.
+/// </summary>
+internal sealed class TodoCommandHandler : ICommandHandler
+{
+    private readonly TodoProvider? _todoProvider;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TodoCommandHandler"/> class.
+    /// </summary>
+    /// <param name="todoProvider">The todo provider, or <see langword="null"/> if not available.</param>
+    public TodoCommandHandler(TodoProvider? todoProvider)
+    {
+        this._todoProvider = todoProvider;
+    }
+
+    /// <inheritdoc/>
+    public string? GetHelpText() => this._todoProvider is not null ? "/todos (show todo list)" : null;
+
+    /// <inheritdoc/>
+    public bool TryHandle(string input, AgentSession session)
+    {
+        if (!input.Equals("/todos", StringComparison.OrdinalIgnoreCase))
+        {
+            return false;
+        }
+
+        if (this._todoProvider is null)
+        {
+            System.Console.WriteLine("TodoProvider is not available.");
+            return true;
+        }
+
+        var todos = this._todoProvider.GetAllTodos(session);
+        if (todos.Count == 0)
+        {
+            System.Console.WriteLine("\n  No todos yet.\n");
+            return true;
+        }
+
+        System.Console.WriteLine();
+        System.Console.WriteLine("  ── Todo List ──");
+        foreach (var item in todos)
+        {
+            string status = item.IsComplete ? "✓" : "○";
+            System.Console.ForegroundColor = item.IsComplete ? ConsoleColor.DarkGray : ConsoleColor.White;
+            System.Console.Write($"  [{status}] #{item.Id} {item.Title}");
+            if (!string.IsNullOrWhiteSpace(item.Description))
+            {
+                System.Console.Write($" — {item.Description}");
+            }
+
+            System.Console.WriteLine();
+        }
+
+        System.Console.ResetColor();
+        System.Console.WriteLine();
+        return true;
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/ConsoleWriter.cs

@@ -0,0 +1,278 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Spectre.Console;
+
+namespace Harness.Shared.Console;
+
+/// <summary>
+/// Centralizes all console output and spinner management for the harness console.
+/// Observers write through this class so the spinner is automatically paused before output.
+/// </summary>
+public sealed class ConsoleWriter : IDisposable
+{
+    private readonly Spinner _spinner = new();
+    private readonly IReadOnlyDictionary<string, ConsoleColor>? _modeColors;
+
+    private bool _lastWasText;
+    private bool _hasReceivedAnyText;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ConsoleWriter"/> class.
+    /// </summary>
+    /// <param name="modeColors">Optional mapping of mode names to console colors.</param>
+    public ConsoleWriter(IReadOnlyDictionary<string, ConsoleColor>? modeColors = null)
+    {
+        this._modeColors = modeColors;
+    }
+
+    /// <summary>
+    /// Gets or sets the current agent mode (e.g., "plan", "execute").
+    /// Used to determine the console color for mode-prefixed output.
+    /// </summary>
+    public string? CurrentMode { get; set; }
+
+    /// <summary>
+    /// Writes the agent response header (e.g., "[plan] Agent: ") and starts the spinner.
+    /// </summary>
+    public void WriteResponseHeader()
+    {
+        if (this.CurrentMode is not null)
+        {
+            System.Console.ForegroundColor = GetModeColor(this.CurrentMode, this._modeColors);
+            System.Console.Write($"\n[{this.CurrentMode}] Agent: ");
+        }
+        else
+        {
+            System.Console.Write("\nAgent: ");
+        }
+
+        this._lastWasText = true;
+        this._hasReceivedAnyText = false;
+        this._spinner.Start();
+    }
+
+    /// <summary>
+    /// Writes informational output with automatic prefix spacing, without a trailing newline.
+    /// Use when continuation content will be appended on the same line.
+    /// </summary>
+    /// <param name="text">The informational text to write (without leading newline/indent — added automatically).</param>
+    /// <param name="color">Optional console color for the text.</param>
+    public async Task WriteInfoAsync(string text, ConsoleColor? color = null)
+    {
+        await this.WriteInfoCoreAsync(text, color, newLine: false);
+    }
+
+    /// <summary>
+    /// Writes informational output with automatic prefix spacing, followed by a newline.
+    /// </summary>
+    /// <param name="text">The informational text to write (without leading newline/indent — added automatically).</param>
+    /// <param name="color">Optional console color for the text.</param>
+    public async Task WriteInfoLineAsync(string text, ConsoleColor? color = null)
+    {
+        await this.WriteInfoCoreAsync(text, color, newLine: true);
+    }
+
+    private async Task WriteInfoCoreAsync(string text, ConsoleColor? color, bool newLine)
+    {
+        await this._spinner.StopAsync();
+
+        string prefix = this._lastWasText ? "\n\n  " : "  ";
+        this._lastWasText = false;
+
+        System.Console.ForegroundColor = color ?? GetModeColor(this.CurrentMode, this._modeColors);
+
+        if (newLine)
+        {
+            System.Console.WriteLine(prefix + text);
+        }
+        else
+        {
+            System.Console.Write(prefix + text);
+        }
+
+        System.Console.ForegroundColor = GetModeColor(this.CurrentMode, this._modeColors);
+
+        this._spinner.Start();
+    }
+
+    /// <summary>
+    /// Writes text output from the agent, managing line break state.
+    /// Ensures a newline is written before the first text output.
+    /// </summary>
+    /// <param name="text">The text to write.</param>
+    /// <param name="color">Optional console color override for this text.</param>
+    public async Task WriteTextAsync(string text, ConsoleColor? color = null)
+    {
+        await this._spinner.StopAsync();
+
+        if (!this._lastWasText)
+        {
+            System.Console.Write("\n");
+            this._lastWasText = true;
+        }
+
+        this._hasReceivedAnyText = true;
+
+        if (color.HasValue)
+        {
+            System.Console.ForegroundColor = color.Value;
+        }
+
+        System.Console.Write(text);
+
+        if (color.HasValue)
+        {
+            System.Console.ForegroundColor = GetModeColor(this.CurrentMode, this._modeColors);
+        }
+
+        this._spinner.Start();
+    }
+
+    /// <summary>
+    /// Reads a line of input from the console, pausing the spinner while waiting for input.
+    /// Optionally displays a prompt before reading. The prompt is rendered between
+    /// two horizontal rules for visual clarity.
+    /// </summary>
+    /// <param name="prompt">Optional prompt text to display before reading input.</param>
+    /// <param name="promptColor">Optional console color for the prompt text.</param>
+    /// <returns>The line read from the console, or <c>null</c> if no input is available.</returns>
+    public async Task<string?> ReadLineAsync(string? prompt = null, ConsoleColor? promptColor = null)
+    {
+        await this._spinner.StopAsync();
+
+        if (prompt is not null)
+        {
+            System.Console.WriteLine();
+            AnsiConsole.Write(this.CreateModeRule());
+
+            if (promptColor.HasValue)
+            {
+                System.Console.ForegroundColor = promptColor.Value;
+            }
+
+            System.Console.Write($"  {prompt}");
+
+            if (promptColor.HasValue)
+            {
+                System.Console.ForegroundColor = GetModeColor(this.CurrentMode, this._modeColors);
+            }
+        }
+
+        string? input = System.Console.ReadLine();
+
+        if (prompt is not null)
+        {
+            AnsiConsole.Write(this.CreateModeRule());
+        }
+
+        this._lastWasText = false;
+        return input;
+    }
+
+    /// <summary>
+    /// Presents a selection prompt with the given choices, plus an option to type a custom response.
+    /// Uses Spectre.Console <see cref="SelectionPrompt{T}"/> for interactive arrow-key selection.
+    /// </summary>
+    /// <param name="title">The title/question displayed above the selection list.</param>
+    /// <param name="choices">The list of choices to present.</param>
+    /// <returns>The selected choice text, or the custom-typed response.</returns>
+    public async Task<string> ReadSelectionAsync(string title, IList<string> choices)
+    {
+        await this._spinner.StopAsync();
+
+        AnsiConsole.Write(this.CreateModeRule());
+
+        const string FreeformOption = "✏️  Type a custom response...";
+        var allChoices = choices.Concat([FreeformOption]).ToList();
+
+        var prompt = new SelectionPrompt<string>()
+            .Title($"  [bold]{Markup.Escape(title)}[/]")
+            .PageSize(10)
+            .AddChoices(allChoices);
+
+        string selection = AnsiConsole.Prompt(prompt);
+
+        if (selection == FreeformOption)
+        {
+            var textPrompt = new TextPrompt<string>("  [grey]Response:[/]");
+            selection = AnsiConsole.Prompt(textPrompt);
+        }
+
+        AnsiConsole.MarkupLine($"  [dim]→ {Markup.Escape(selection)}[/]");
+        AnsiConsole.Write(this.CreateModeRule());
+
+        this._lastWasText = false;
+        return selection;
+    }
+
+    /// <summary>
+    /// Writes the stream-complete footer (handles "no text response" fallback, resets color).
+    /// </summary>
+    public async Task WriteStreamFooterAsync(bool hasFollowUpMessages)
+    {
+        await this._spinner.StopAsync();
+
+        if (!this._hasReceivedAnyText && !hasFollowUpMessages)
+        {
+            System.Console.ForegroundColor = ConsoleColor.DarkYellow;
+            System.Console.Write("\n  (no text response from agent)");
+        }
+
+        System.Console.ResetColor();
+        System.Console.WriteLine();
+    }
+
+    /// <inheritdoc/>
+    public void Dispose()
+    {
+        this._spinner.Dispose();
+    }
+
+    /// <summary>
+    /// Gets the console color associated with a mode name, using the provided color map.
+    /// </summary>
+    internal static ConsoleColor GetModeColor(string? mode, IReadOnlyDictionary<string, ConsoleColor>? modeColors = null)
+    {
+        if (mode is null)
+        {
+            return ConsoleColor.Gray;
+        }
+
+        if (modeColors is not null && modeColors.TryGetValue(mode, out var color))
+        {
+            return color;
+        }
+
+        return ConsoleColor.Gray;
+    }
+
+    /// <summary>
+    /// Creates a <see cref="Rule"/> styled with the current mode color.
+    /// </summary>
+    internal Rule CreateModeRule()
+    {
+        var spectreColor = ToSpectreColor(GetModeColor(this.CurrentMode, this._modeColors));
+        return new Rule().RuleStyle(new Style(spectreColor));
+    }
+
+    internal static Color ToSpectreColor(ConsoleColor consoleColor) => consoleColor switch
+    {
+        ConsoleColor.Black => Color.Black,
+        ConsoleColor.DarkBlue => Color.Blue,
+        ConsoleColor.DarkGreen => Color.Green,
+        ConsoleColor.DarkCyan => Color.Teal,
+        ConsoleColor.DarkRed => Color.Red,
+        ConsoleColor.DarkMagenta => Color.Purple,
+        ConsoleColor.DarkYellow => Color.Olive,
+        ConsoleColor.Gray => Color.Silver,
+        ConsoleColor.DarkGray => Color.Grey,
+        ConsoleColor.Blue => Color.Blue1,
+        ConsoleColor.Green => Color.Green1,
+        ConsoleColor.Cyan => Color.Aqua,
+        ConsoleColor.Red => Color.Red1,
+        ConsoleColor.Magenta => Color.Fuchsia,
+        ConsoleColor.Yellow => Color.Yellow,
+        ConsoleColor.White => Color.White,
+        _ => Color.Silver,
+    };
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/HarnessConsole.cs

@@ -0,0 +1,214 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Harness.Shared.Console.Commands;
+using Harness.Shared.Console.Observers;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console;
+
+/// <summary>
+/// Provides a reusable interactive console loop for running an <see cref="AIAgent"/>
+/// with streaming output, extensible observers, and mode-aware interaction strategies.
+/// </summary>
+public static class HarnessConsole
+{
+    /// <summary>
+    /// Runs an interactive console session with the specified agent.
+    /// Supports streaming output, tool call display, spinner animation,
+    /// optional planning UX with structured output, and the <c>/todos</c> command.
+    /// </summary>
+    /// <param name="agent">The agent to interact with.</param>
+    /// <param name="title">The title displayed in the console header.</param>
+    /// <param name="userPrompt">A short prompt to the user, displayed below the title.</param>
+    /// <param name="options">Optional configuration options for the console session.</param>
+    public static async Task RunAgentAsync(AIAgent agent, string title, string userPrompt, HarnessConsoleOptions? options = null)
+    {
+        options ??= new();
+
+        if (options.EnablePlanningUx
+            && (string.IsNullOrWhiteSpace(options.PlanningModeName) || string.IsNullOrWhiteSpace(options.ExecutionModeName)))
+        {
+            throw new ArgumentException(
+                "When EnablePlanningUx is true, both PlanningModeName and ExecutionModeName must be configured.",
+                nameof(options));
+        }
+
+        System.Console.WriteLine($"=== {title} ===");
+        System.Console.WriteLine(userPrompt);
+
+        var todoProvider = agent.GetService<TodoProvider>();
+        var modeProvider = agent.GetService<AgentModeProvider>();
+
+        // Build command handlers.
+        var commandHandlers = new List<ICommandHandler>
+        {
+            new TodoCommandHandler(todoProvider),
+            new ModeCommandHandler(modeProvider, options.ModeColors),
+        };
+
+        var commands = commandHandlers
+            .Select(h => h.GetHelpText())
+            .Where(t => t is not null)
+            .Append("exit (quit)");
+
+        System.Console.WriteLine($"Commands: {string.Join(", ", commands)}");
+        System.Console.WriteLine();
+
+        AgentSession session = await agent.CreateSessionAsync();
+        using var writer = new ConsoleWriter(options.ModeColors);
+        writer.CurrentMode = modeProvider?.GetMode(session);
+
+        string prompt = BuildUserPrompt(modeProvider, session);
+        string? userInput = await writer.ReadLineAsync(prompt);
+
+        // Main loop to run a command or agent and get the next user command/input.
+        while (!string.IsNullOrWhiteSpace(userInput) && !userInput.Equals("exit", StringComparison.OrdinalIgnoreCase))
+        {
+            // Check command handlers first — first one to handle wins.
+            bool handled = false;
+            foreach (var handler in commandHandlers)
+            {
+                if (handler.TryHandle(userInput, session))
+                {
+                    handled = true;
+                    break;
+                }
+            }
+
+            if (!handled)
+            {
+                await RunAgentTurnAsync(agent, session, modeProvider, options, writer, userInput);
+            }
+
+            writer.CurrentMode = modeProvider?.GetMode(session);
+            prompt = BuildUserPrompt(modeProvider, session);
+            userInput = await writer.ReadLineAsync(prompt);
+        }
+
+        System.Console.ResetColor();
+        System.Console.WriteLine("Goodbye!");
+    }
+
+    /// <summary>
+    /// Runs one or more agent invocations for a single user turn, using the current
+    /// observers. Re-invokes automatically for tool approvals and mode-driven follow-ups
+    /// (e.g., planning clarification loops).
+    /// </summary>
+    private static async Task RunAgentTurnAsync(
+        AIAgent agent,
+        AgentSession session,
+        AgentModeProvider? modeProvider,
+        HarnessConsoleOptions options,
+        ConsoleWriter writer,
+        string userInput)
+    {
+        IList<ChatMessage>? nextMessages = [new ChatMessage(ChatRole.User, userInput)];
+
+        while (nextMessages is not null)
+        {
+            // Build observers for this invocation (may change between iterations due to mode changes).
+            var observers = CreateObservers(options, modeProvider, session);
+
+            // Build run options — observers may inject ResponseFormat, etc.
+            var runOptions = new AgentRunOptions();
+            foreach (var observer in observers)
+            {
+                observer.ConfigureRunOptions(runOptions);
+            }
+
+            // Stream the response, fanning out to all observers.
+            writer.CurrentMode = modeProvider?.GetMode(session);
+            writer.WriteResponseHeader();
+
+            try
+            {
+                await foreach (var update in agent.RunStreamingAsync(nextMessages, session, runOptions))
+                {
+                    // Update mode color if the mode changed during streaming.
+                    if (modeProvider is not null)
+                    {
+                        string currentMode = modeProvider.GetMode(session);
+                        if (currentMode != writer.CurrentMode)
+                        {
+                            writer.CurrentMode = currentMode;
+                        }
+                    }
+
+                    foreach (var content in update.Contents)
+                    {
+                        foreach (var observer in observers)
+                        {
+                            await observer.OnContentAsync(writer, content);
+                        }
+                    }
+
+                    if (!string.IsNullOrEmpty(update.Text))
+                    {
+                        foreach (var observer in observers)
+                        {
+                            await observer.OnTextAsync(writer, update.Text);
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                await writer.WriteInfoLineAsync($"❌ Stream error: {ex.GetType().Name}:\n{ex}", ConsoleColor.Red);
+            }
+
+            // Collect messages from all observers.
+            var combinedMessages = new List<ChatMessage>();
+            bool hasObserverMessages = false;
+            foreach (var observer in observers)
+            {
+                var messages = await observer.OnStreamCompleteAsync(writer, agent, session, options);
+                if (messages is { Count: > 0 })
+                {
+                    combinedMessages.AddRange(messages);
+                    hasObserverMessages = true;
+                }
+            }
+
+            await writer.WriteStreamFooterAsync(hasFollowUpMessages: hasObserverMessages);
+            nextMessages = combinedMessages.Count > 0 ? combinedMessages : null;
+        }
+    }
+
+    private static List<ConsoleObserver> CreateObservers(HarnessConsoleOptions options, AgentModeProvider? modeProvider, AgentSession session)
+    {
+        var observers = new List<ConsoleObserver>
+        {
+            new ToolCallDisplayObserver(),
+            new ToolApprovalObserver(),
+            new ErrorDisplayObserver(),
+            new ReasoningDisplayObserver(),
+            new UsageDisplayObserver(options.MaxContextWindowTokens, options.MaxOutputTokens),
+        };
+
+        // Add the appropriate output observer based on the current mode.
+        if (options.EnablePlanningUx
+            && modeProvider is not null
+            && string.Equals(modeProvider.GetMode(session), options.PlanningModeName, StringComparison.OrdinalIgnoreCase))
+        {
+            observers.Add(new PlanningOutputObserver(modeProvider));
+        }
+        else
+        {
+            observers.Add(new TextOutputObserver());
+        }
+
+        return observers;
+    }
+
+    private static string BuildUserPrompt(AgentModeProvider? modeProvider, AgentSession session)
+    {
+        if (modeProvider is not null)
+        {
+            string mode = modeProvider.GetMode(session);
+            return $"[{mode}] You: ";
+        }
+
+        return "You: ";
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/HarnessConsoleOptions.cs

@@ -0,0 +1,52 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Harness.Shared.Console;
+
+/// <summary>
+/// Configuration options for <see cref="HarnessConsole"/>.
+/// </summary>
+public class HarnessConsoleOptions
+{
+    /// <summary>
+    /// Gets or sets the optional maximum context window size in tokens.
+    /// When set, token usage is displayed as a percentage of the budget.
+    /// </summary>
+    public int? MaxContextWindowTokens { get; set; }
+
+    /// <summary>
+    /// Gets or sets the optional maximum output tokens.
+    /// Used with <see cref="MaxContextWindowTokens"/> to show input/output budget breakdown.
+    /// </summary>
+    public int? MaxOutputTokens { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the planning UX is enabled.
+    /// When <see langword="true"/> and the agent is in the mode specified by <see cref="PlanningModeName"/>,
+    /// the console uses structured output to present clarification questions and approval requests
+    /// instead of streaming free-form text.
+    /// </summary>
+    /// <value>Defaults to <see langword="false"/>.</value>
+    public bool EnablePlanningUx { get; set; }
+
+    /// <summary>
+    /// Gets or sets the name of the agent mode that activates the planning UX.
+    /// Must be set when <see cref="EnablePlanningUx"/> is <see langword="true"/>.
+    /// </summary>
+    public string? PlanningModeName { get; set; }
+
+    /// <summary>
+    /// Gets or sets the name of the agent mode to switch to when the user approves a plan.
+    /// Must be set when <see cref="EnablePlanningUx"/> is <see langword="true"/>.
+    /// </summary>
+    public string? ExecutionModeName { get; set; }
+
+    /// <summary>
+    /// Gets or sets a mapping of agent mode names to console colors.
+    /// When a mode is not found in this dictionary, the default color (<see cref="ConsoleColor.Gray"/>) is used.
+    /// </summary>
+    public Dictionary<string, ConsoleColor> ModeColors { get; set; } = new(StringComparer.OrdinalIgnoreCase)
+    {
+        ["plan"] = ConsoleColor.Cyan,
+        ["execute"] = ConsoleColor.Green,
+    };
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Harness_Shared_Console.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Spectre.Console" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI\Microsoft.Agents.AI.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ConsoleObserver.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Abstract base class for console observers that participate in the agent response
+/// streaming lifecycle. Observers can configure run options, observe streamed content,
+/// and return messages to re-invoke the agent after the stream completes.
+/// All methods have default no-op implementations so subclasses only override what they need.
+/// </summary>
+public abstract class ConsoleObserver
+{
+    /// <summary>
+    /// Configures <see cref="AgentRunOptions"/> before the agent is invoked.
+    /// Override to set options such as <see cref="AgentRunOptions.ResponseFormat"/>.
+    /// </summary>
+    /// <param name="options">The run options to configure.</param>
+    public virtual void ConfigureRunOptions(AgentRunOptions options)
+    {
+    }
+
+    /// <summary>
+    /// Called for each <see cref="AIContent"/> item in the response stream.
+    /// </summary>
+    /// <param name="writer">The console writer for rendering output.</param>
+    /// <param name="content">The content item from the stream.</param>
+    public virtual Task OnContentAsync(ConsoleWriter writer, AIContent content) => Task.CompletedTask;
+
+    /// <summary>
+    /// Called for each text update in the response stream.
+    /// </summary>
+    /// <param name="writer">The console writer for rendering output.</param>
+    /// <param name="text">The text from the update.</param>
+    public virtual Task OnTextAsync(ConsoleWriter writer, string text) => Task.CompletedTask;
+
+    /// <summary>
+    /// Called after the response stream completes. Returns messages to include in the
+    /// next agent invocation, or <see langword="null"/> if no re-invocation is needed.
+    /// </summary>
+    /// <param name="writer">The console writer for rendering output.</param>
+    /// <param name="agent">The agent being interacted with.</param>
+    /// <param name="session">The current agent session.</param>
+    /// <param name="options">The console options.</param>
+    /// <returns>Messages to send to the agent, or <see langword="null"/> if no action is needed.</returns>
+    public virtual Task<IList<ChatMessage>?> OnStreamCompleteAsync(
+        ConsoleWriter writer,
+        AIAgent agent,
+        AgentSession session,
+        HarnessConsoleOptions options) => Task.FromResult<IList<ChatMessage>?>(null);
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ErrorDisplayObserver.cs

@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Displays error content (❌) from the response stream.
+/// </summary>
+internal sealed class ErrorDisplayObserver : ConsoleObserver
+{
+    /// <inheritdoc/>
+    public override async Task OnContentAsync(ConsoleWriter writer, AIContent content)
+    {
+        if (content is ErrorContent errorContent)
+        {
+            string errorText = $"❌ Error: {errorContent.Message}";
+            if (!string.IsNullOrWhiteSpace(errorContent.ErrorCode))
+            {
+                errorText += $" (code: {errorContent.ErrorCode})";
+            }
+
+            if (!string.IsNullOrWhiteSpace(errorContent.Details))
+            {
+                errorText += $" details: {errorContent.Details}";
+            }
+
+            await writer.WriteInfoLineAsync(errorText, ConsoleColor.Red);
+        }
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/PlanningOutputObserver.cs

@@ -0,0 +1,177 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Text;
+using System.Text.Json;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Planning observer that configures structured output, collects streamed text,
+/// and deserializes it as a <see cref="PlanningResponse"/>. Renders clarification
+/// questions and approval prompts, and manages mode switching when the user approves a plan.
+/// </summary>
+internal sealed class PlanningOutputObserver : ConsoleObserver
+{
+    private readonly StringBuilder _textCollector = new();
+    private readonly AgentModeProvider _modeProvider;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PlanningOutputObserver"/> class.
+    /// </summary>
+    /// <param name="modeProvider">The mode provider for switching modes on approval.</param>
+    public PlanningOutputObserver(AgentModeProvider modeProvider)
+    {
+        this._modeProvider = modeProvider;
+    }
+
+    /// <inheritdoc/>
+    public override void ConfigureRunOptions(AgentRunOptions options)
+    {
+        options.ResponseFormat = ChatResponseFormat.ForJsonSchema<PlanningResponse>();
+    }
+
+    /// <inheritdoc/>
+    public override Task OnTextAsync(ConsoleWriter writer, string text)
+    {
+        // Collect text silently instead of displaying it.
+        this._textCollector.Append(text);
+        return Task.CompletedTask;
+    }
+
+    /// <inheritdoc/>
+    public override async Task<IList<ChatMessage>?> OnStreamCompleteAsync(
+        ConsoleWriter writer,
+        AIAgent agent,
+        AgentSession session,
+        HarnessConsoleOptions options)
+    {
+        // Read collected text from our stream observation.
+        string collectedText = this._textCollector.ToString();
+        this._textCollector.Clear();
+
+        if (string.IsNullOrWhiteSpace(collectedText))
+        {
+            return null;
+        }
+
+        // Deserialize the structured response.
+        PlanningResponse? planningResponse;
+        try
+        {
+            planningResponse = JsonSerializer.Deserialize<PlanningResponse>(collectedText);
+        }
+        catch (JsonException ex)
+        {
+            await writer.WriteInfoLineAsync($"❌ Failed to parse planning response: {ex.Message}", ConsoleColor.Red);
+            await writer.WriteInfoLineAsync($"(raw response) {collectedText}", ConsoleColor.DarkYellow);
+            return null;
+        }
+
+        if (planningResponse is null)
+        {
+            await writer.WriteInfoLineAsync("(no structured response from agent)", ConsoleColor.DarkYellow);
+            return null;
+        }
+
+        // Render based on response type.
+        if (planningResponse.Type == PlanningResponseType.Clarification)
+        {
+            return AsUserMessages(await this.RenderClarificationsAndCollectResponsesAsync(writer, planningResponse));
+        }
+
+        if (planningResponse.Type == PlanningResponseType.Approval)
+        {
+            var question = planningResponse.Questions.FirstOrDefault();
+            if (question is null)
+            {
+                await writer.WriteInfoLineAsync("(approval response had no content)", ConsoleColor.DarkYellow);
+                return null;
+            }
+
+            string response = await this.RenderApprovalAndCollectResponseAsync(writer, question, options);
+            if (response == "Approved")
+            {
+                this._modeProvider.SetMode(session, options.ExecutionModeName!);
+
+                await writer.WriteInfoLineAsync($"✅ Switched to {options.ExecutionModeName} mode.",
+                    ConsoleWriter.GetModeColor(options.ExecutionModeName, options.ModeColors));
+            }
+
+            return AsUserMessages(response);
+        }
+
+        await writer.WriteInfoLineAsync($"(unexpected response type: {planningResponse.Type})", ConsoleColor.DarkYellow);
+        return null;
+    }
+
+    private static IList<ChatMessage>? AsUserMessages(string? text) =>
+        text is not null ? [new ChatMessage(ChatRole.User, text)] : null;
+
+    private async Task<string?> RenderClarificationsAndCollectResponsesAsync(ConsoleWriter writer, PlanningResponse response)
+    {
+        var answers = new List<string>();
+
+        foreach (var question in response.Questions)
+        {
+            await writer.WriteInfoLineAsync(string.Empty);
+            await writer.WriteInfoLineAsync(question.Message);
+
+            string? answer;
+            if (question.Choices is { Count: > 0 })
+            {
+                answer = await writer.ReadSelectionAsync(
+                    "Choose an option:",
+                    question.Choices);
+            }
+            else
+            {
+                answer = (await writer.ReadLineAsync("Response: "))?.Trim();
+            }
+
+            if (!string.IsNullOrWhiteSpace(answer))
+            {
+                answers.Add($"Q: {question.Message}\nA: {answer}");
+            }
+        }
+
+        return answers.Count > 0 ? string.Join("\n\n", answers) : null;
+    }
+
+    private async Task<string> RenderApprovalAndCollectResponseAsync(ConsoleWriter writer, PlanningQuestion question, HarnessConsoleOptions options)
+    {
+        await writer.WriteInfoLineAsync(question.Message);
+
+        var choices = new List<string>
+        {
+            "Approve and switch to execute mode",
+            "Suggest changes",
+        };
+
+        string selection = await writer.ReadSelectionAsync("What would you like to do?", choices);
+
+        if (selection == choices[0])
+        {
+            return "Approved";
+        }
+
+        if (selection == choices[1])
+        {
+            string? feedback = await writer.ReadLineAsync(
+                "Your feedback: ",
+                ConsoleWriter.GetModeColor(options.PlanningModeName, options.ModeColors));
+
+            if (string.IsNullOrWhiteSpace(feedback))
+            {
+                // Treat empty feedback as no changes — re-prompt the agent with the plan.
+                return "No changes suggested. Please re-present the plan for approval.";
+            }
+
+            return feedback;
+        }
+
+        // Custom freeform input — treat as suggested changes.
+        return selection;
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/PlanningResponse.cs

@@ -0,0 +1,51 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.ComponentModel;
+using System.Text.Json.Serialization;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Represents a structured response from the agent while in planning mode.
+/// Used with structured output to enable consistent rendering of clarification
+/// questions and approval requests in the console.
+/// </summary>
+public class PlanningResponse
+{
+    /// <summary>
+    /// Gets or sets the type of planning response.
+    /// </summary>
+    [JsonPropertyName("type")]
+    public required PlanningResponseType Type { get; set; }
+
+    /// <summary>
+    /// Gets or sets the list of questions or items to present to the user.
+    /// For clarification, this contains one or more questions (each with choices).
+    /// For approval, this contains exactly one item with the plan summary.
+    /// </summary>
+    [JsonPropertyName("questions")]
+    [Description("For clarifications, this has one or more questions to ask the user (each with choices). For approvals, this has exactly one item containing the plan summary for the user to approve.")]
+    public required List<PlanningQuestion> Questions { get; set; }
+}
+
+/// <summary>
+/// Represents a single question or item within a <see cref="PlanningResponse"/>.
+/// </summary>
+public class PlanningQuestion
+{
+    /// <summary>
+    /// Gets or sets the message to display to the user.
+    /// For clarification, this is the question. For approval, this is the plan summary.
+    /// </summary>
+    [JsonPropertyName("message")]
+    [Description("For clarifications, this has the question that needs to be clarified with the user. For approvals, this would contain a summary of the execution plan that the user needs to approve.")]
+    public required string Message { get; set; }
+
+    /// <summary>
+    /// Gets or sets the list of choices for the user to pick from.
+    /// Only used for clarification questions. Null when no predefined choices are offered.
+    /// </summary>
+    [JsonPropertyName("choices")]
+    [Description("For clarifications, this has a list of options that the user can choose from. null for approvals.")]
+    public List<string>? Choices { get; set; }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/PlanningResponseType.cs

@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.ComponentModel;
+using System.Text.Json.Serialization;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Specifies the type of planning response from the agent.
+/// </summary>
+[JsonConverter(typeof(JsonStringEnumConverter<PlanningResponseType>))]
+public enum PlanningResponseType
+{
+    /// <summary>
+    /// The agent needs clarification and presents options for the user to choose from.
+    /// </summary>
+    [Description("Use this type when you need clarification around the user request and you want to present the user with options to choose from.")]
+    Clarification,
+
+    /// <summary>
+    /// The agent is seeking approval to proceed with execution.
+    /// </summary>
+    [Description("Use this type when you are ready to start execution, but need approval to start executing.")]
+    Approval,
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ReasoningDisplayObserver.cs

@@ -0,0 +1,20 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Displays reasoning content in dark magenta from the response stream.
+/// </summary>
+internal sealed class ReasoningDisplayObserver : ConsoleObserver
+{
+    /// <inheritdoc/>
+    public override async Task OnContentAsync(ConsoleWriter writer, AIContent content)
+    {
+        if (content is TextReasoningContent reasoning && !string.IsNullOrEmpty(reasoning.Text))
+        {
+            await writer.WriteTextAsync(reasoning.Text, ConsoleColor.DarkMagenta);
+        }
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/TextOutputObserver.cs

@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Streams agent text output directly to the console.
+/// Used in normal (non-planning) mode.
+/// </summary>
+internal sealed class TextOutputObserver : ConsoleObserver
+{
+    /// <inheritdoc/>
+    public override async Task OnTextAsync(ConsoleWriter writer, string text)
+    {
+        await writer.WriteTextAsync(text);
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ToolApprovalObserver.cs

@@ -0,0 +1,92 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Collects <see cref="ToolApprovalRequestContent"/> items during the response stream,
+/// displays approval-needed notifications inline, and prompts the user for approval
+/// decisions after the stream completes.
+/// </summary>
+internal sealed class ToolApprovalObserver : ConsoleObserver
+{
+    private readonly List<ToolApprovalRequestContent> _approvalRequests = [];
+
+    /// <inheritdoc/>
+    public override async Task OnContentAsync(ConsoleWriter writer, AIContent content)
+    {
+        if (content is ToolApprovalRequestContent approvalRequest)
+        {
+            this._approvalRequests.Add(approvalRequest);
+            string toolName = approvalRequest.ToolCall is FunctionCallContent fc
+                ? ToolCallFormatter.Format(fc)
+                : approvalRequest.ToolCall?.ToString() ?? "unknown";
+            await writer.WriteInfoLineAsync($"⚠️ Approval needed: {toolName}", ConsoleColor.Yellow);
+        }
+    }
+
+    /// <inheritdoc/>
+    public override async Task<IList<ChatMessage>?> OnStreamCompleteAsync(
+        ConsoleWriter writer,
+        AIAgent agent,
+        AgentSession session,
+        HarnessConsoleOptions options)
+    {
+        if (this._approvalRequests.Count == 0)
+        {
+            return null;
+        }
+
+        var messages = await PromptForApprovalsAsync(writer, this._approvalRequests);
+        this._approvalRequests.Clear();
+        return messages;
+    }
+
+    private static async Task<List<ChatMessage>?> PromptForApprovalsAsync(ConsoleWriter writer, List<ToolApprovalRequestContent> approvalRequests)
+    {
+        if (approvalRequests.Count == 0)
+        {
+            return null;
+        }
+
+        var responses = new List<AIContent>();
+        foreach (var request in approvalRequests)
+        {
+            string toolName = request.ToolCall is FunctionCallContent fc
+                ? ToolCallFormatter.Format(fc)
+                : request.ToolCall?.ToString() ?? "unknown";
+
+            var choices = new List<string>
+            {
+                "Approve this call",
+                "Always approve this tool (any arguments)",
+                "Always approve this tool with these arguments",
+                "Deny",
+            };
+
+            string selection = await writer.ReadSelectionAsync($"🔐 Tool approval: {toolName}", choices);
+            AIContent response = selection switch
+            {
+                "Always approve this tool (any arguments)" => request.CreateAlwaysApproveToolResponse("User chose to always approve this tool"),
+                "Always approve this tool with these arguments" => request.CreateAlwaysApproveToolWithArgumentsResponse("User chose to always approve this tool with these arguments"),
+                "Deny" => request.CreateResponse(approved: false, reason: "User denied"),
+                _ => request.CreateResponse(approved: true, reason: "User approved"),
+            };
+
+            string action = selection switch
+            {
+                "Always approve this tool (any arguments)" => "✅ Always approved (any args)",
+                "Always approve this tool with these arguments" => "✅ Always approved (these args)",
+                "Deny" => "❌ Denied",
+                _ => "✅ Approved",
+            };
+            await writer.WriteInfoLineAsync($"   {action}", ConsoleColor.DarkGray);
+
+            responses.Add(response);
+        }
+
+        return [new ChatMessage(ChatRole.User, responses)];
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ToolCallDisplayObserver.cs

@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Displays tool call notifications (🔧) for <see cref="FunctionCallContent"/>
+/// and <see cref="ToolCallContent"/> items in the response stream.
+/// </summary>
+internal sealed class ToolCallDisplayObserver : ConsoleObserver
+{
+    /// <inheritdoc/>
+    public override async Task OnContentAsync(ConsoleWriter writer, AIContent content)
+    {
+        if (content is FunctionCallContent functionCall)
+        {
+            await writer.WriteInfoLineAsync($"🔧 Calling tool: {ToolCallFormatter.Format(functionCall)}...", ConsoleColor.DarkYellow);
+        }
+        else if (content is ToolCallContent toolCall)
+        {
+            await writer.WriteInfoLineAsync($"🔧 Calling tool: {toolCall}...", ConsoleColor.DarkYellow);
+        }
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/ToolCallFormatter.cs

@@ -0,0 +1,288 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Text;
+using System.Text.Json;
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Formats <see cref="FunctionCallContent"/> instances into human-readable strings
+/// for console display.
+/// </summary>
+public static class ToolCallFormatter
+{
+    /// <summary>
+    /// Returns a formatted string for the given tool call, with human-readable
+    /// details for known tools (todos, mode, sub-agents, web tools).
+    /// </summary>
+    /// <param name="call">The function call content to format.</param>
+    /// <returns>A formatted string describing the tool call.</returns>
+    public static string Format(FunctionCallContent call)
+    {
+        string? detail = call.Name switch
+        {
+            // Todo tools
+            "TodoList_Add" => FormatAddTodos(call),
+            "TodoList_Complete" => FormatIdList(call, "ids", "Complete"),
+            "TodoList_Remove" => FormatIdList(call, "ids", "Remove"),
+            "TodoList_GetRemaining" => null,
+            "TodoList_GetAll" => null,
+
+            // Mode tools
+            "AgentMode_Set" => FormatStringArg(call, "mode"),
+            "AgentMode_Get" => null,
+
+            // Sub-agent tools
+            "SubAgents_StartTask" => FormatStartSubTask(call),
+            "SubAgents_WaitForFirstCompletion" => FormatIdList(call, "taskIds", "Wait for"),
+            "SubAgents_GetTaskResults" => FormatSingleId(call, "taskId"),
+            "SubAgents_GetAllTasks" => null,
+            "SubAgents_ContinueTask" => FormatContinueTask(call),
+            "SubAgents_ClearCompletedTask" => FormatSingleId(call, "taskId"),
+
+            // File memory tools
+            "FileMemory_SaveFile" => FormatSaveFile(call),
+            "FileMemory_ReadFile" => FormatStringArg(call, "fileName"),
+            "FileMemory_DeleteFile" => FormatStringArg(call, "fileName"),
+            "FileMemory_ListFiles" => null,
+            "FileMemory_SearchFiles" => FormatSearchFiles(call),
+
+            // External tools
+            "web_search" => FormatStringArg(call, "query"),
+            "DownloadUri" => FormatStringArg(call, "uri"),
+
+            _ => FormatFallback(call),
+        };
+
+        return detail is not null ? $"{call.Name} {detail}" : call.Name;
+    }
+
+    private static string? FormatAddTodos(FunctionCallContent call)
+    {
+        if (call.Arguments?.TryGetValue("todos", out object? todosObj) != true || todosObj is null)
+        {
+            return null;
+        }
+
+        var titles = new List<string>();
+
+        if (todosObj is JsonElement jsonArray && jsonArray.ValueKind == JsonValueKind.Array)
+        {
+            foreach (JsonElement item in jsonArray.EnumerateArray())
+            {
+                string? title = item.TryGetProperty("title", out JsonElement titleElement)
+                    ? titleElement.GetString()
+                    : null;
+
+                if (!string.IsNullOrEmpty(title))
+                {
+                    titles.Add(title);
+                }
+            }
+        }
+
+        if (titles.Count == 0)
+        {
+            return null;
+        }
+
+        var sb = new StringBuilder();
+        sb.Append($"({titles.Count} item{(titles.Count == 1 ? "" : "s")})");
+        foreach (string title in titles)
+        {
+            sb.Append($"\n    • {title}");
+        }
+
+        return sb.ToString();
+    }
+
+    private static string? FormatIdList(FunctionCallContent call, string paramName, string verb)
+    {
+        List<int>? ids = GetIntList(call, paramName);
+        if (ids is null || ids.Count == 0)
+        {
+            return null;
+        }
+
+        return $"({verb} #{string.Join(", #", ids)})";
+    }
+
+    private static string? FormatSingleId(FunctionCallContent call, string paramName)
+    {
+        int? id = GetInt(call, paramName);
+        return id.HasValue ? $"(task #{id.Value})" : null;
+    }
+
+    private static string? FormatStartSubTask(FunctionCallContent call)
+    {
+        string? agentName = GetString(call, "agentName");
+        string? description = GetString(call, "description");
+
+        if (agentName is null && description is null)
+        {
+            return null;
+        }
+
+        var sb = new StringBuilder("(");
+        if (agentName is not null)
+        {
+            sb.Append($"agent: {agentName}");
+        }
+
+        if (description is not null)
+        {
+            if (agentName is not null)
+            {
+                sb.Append(", ");
+            }
+
+            sb.Append($"\"{Truncate(description, 60)}\"");
+        }
+
+        sb.Append(')');
+        return sb.ToString();
+    }
+
+    private static string? FormatContinueTask(FunctionCallContent call)
+    {
+        int? taskId = GetInt(call, "taskId");
+        string? text = GetString(call, "text");
+
+        if (!taskId.HasValue)
+        {
+            return null;
+        }
+
+        return text is not null
+            ? $"(task #{taskId.Value}, \"{Truncate(text, 50)}\")"
+            : $"(task #{taskId.Value})";
+    }
+
+    private static string? FormatSaveFile(FunctionCallContent call)
+    {
+        string? fileName = GetString(call, "fileName");
+        string? description = GetString(call, "description");
+
+        if (fileName is null)
+        {
+            return null;
+        }
+
+        return string.IsNullOrEmpty(description)
+            ? $"({fileName})"
+            : $"({fileName}, with description)";
+    }
+
+    private static string? FormatSearchFiles(FunctionCallContent call)
+    {
+        string? pattern = GetString(call, "regexPattern");
+        string? filePattern = GetString(call, "filePattern");
+
+        if (pattern is null)
+        {
+            return null;
+        }
+
+        return string.IsNullOrEmpty(filePattern)
+            ? $"(/{pattern}/)"
+            : $"(/{pattern}/ in {filePattern})";
+    }
+
+    private static string? FormatStringArg(FunctionCallContent call, string paramName)
+    {
+        string? value = GetString(call, paramName);
+        return value is not null ? $"({value})" : null;
+    }
+
+    private static string? FormatFallback(FunctionCallContent call)
+    {
+        if (call.Arguments is null || call.Arguments.Count == 0)
+        {
+            return null;
+        }
+
+        var parts = new List<string>();
+        foreach (var kvp in call.Arguments)
+        {
+            string? stringValue = kvp.Value switch
+            {
+                JsonElement je => je.ValueKind switch
+                {
+                    JsonValueKind.String => je.GetString(),
+                    JsonValueKind.Number => je.GetRawText(),
+                    JsonValueKind.True => "true",
+                    JsonValueKind.False => "false",
+                    _ => null,
+                },
+                not null => kvp.Value.ToString(),
+                _ => null,
+            };
+
+            if (stringValue is not null)
+            {
+                parts.Add($"{kvp.Key}: {Truncate(stringValue, 40)}");
+            }
+        }
+
+        return parts.Count > 0 ? $"({string.Join(", ", parts)})" : null;
+    }
+
+    private static string? GetString(FunctionCallContent call, string paramName)
+    {
+        if (call.Arguments?.TryGetValue(paramName, out object? value) != true || value is null)
+        {
+            return null;
+        }
+
+        return value switch
+        {
+            JsonElement je when je.ValueKind == JsonValueKind.String => je.GetString(),
+            string s => s,
+            _ => value.ToString(),
+        };
+    }
+
+    private static int? GetInt(FunctionCallContent call, string paramName)
+    {
+        if (call.Arguments?.TryGetValue(paramName, out object? value) != true || value is null)
+        {
+            return null;
+        }
+
+        return value switch
+        {
+            JsonElement je when je.ValueKind == JsonValueKind.Number => je.GetInt32(),
+            int i => i,
+            _ => int.TryParse(value.ToString(), out int parsed) ? parsed : null,
+        };
+    }
+
+    private static List<int>? GetIntList(FunctionCallContent call, string paramName)
+    {
+        if (call.Arguments?.TryGetValue(paramName, out object? value) != true || value is null)
+        {
+            return null;
+        }
+
+        var result = new List<int>();
+
+        if (value is JsonElement je && je.ValueKind == JsonValueKind.Array)
+        {
+            foreach (JsonElement item in je.EnumerateArray())
+            {
+                if (item.ValueKind == JsonValueKind.Number)
+                {
+                    result.Add(item.GetInt32());
+                }
+            }
+        }
+
+        return result.Count > 0 ? result : null;
+    }
+
+    private static string Truncate(string text, int maxLength)
+    {
+        return text.Length <= maxLength ? text : string.Concat(text.AsSpan(0, maxLength), "…");
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Observers/UsageDisplayObserver.cs

@@ -0,0 +1,68 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+
+namespace Harness.Shared.Console.Observers;
+
+/// <summary>
+/// Displays token usage statistics (📊) from the response stream.
+/// </summary>
+internal sealed class UsageDisplayObserver : ConsoleObserver
+{
+    private readonly int? _maxContextWindowTokens;
+    private readonly int? _maxOutputTokens;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UsageDisplayObserver"/> class.
+    /// </summary>
+    /// <param name="maxContextWindowTokens">Optional max context window size in tokens.</param>
+    /// <param name="maxOutputTokens">Optional max output tokens.</param>
+    public UsageDisplayObserver(int? maxContextWindowTokens, int? maxOutputTokens)
+    {
+        this._maxContextWindowTokens = maxContextWindowTokens;
+        this._maxOutputTokens = maxOutputTokens;
+    }
+
+    /// <inheritdoc/>
+    public override async Task OnContentAsync(ConsoleWriter writer, AIContent content)
+    {
+        if (content is UsageContent usage)
+        {
+            if (usage.Details is not null)
+            {
+                await writer.WriteInfoLineAsync(this.FormatUsageBreakdown(usage.Details), ConsoleColor.DarkGray);
+            }
+            else
+            {
+                await writer.WriteInfoLineAsync("📊 Tokens —", ConsoleColor.DarkGray);
+            }
+        }
+    }
+
+    private string FormatUsageBreakdown(UsageDetails details)
+    {
+        int? inputBudget = (this._maxContextWindowTokens is not null && this._maxOutputTokens is not null)
+            ? this._maxContextWindowTokens.Value - this._maxOutputTokens.Value
+            : null;
+
+        return $"📊 Tokens — input: {FormatTokenCount(details.InputTokenCount, inputBudget)}"
+            + $" | output: {FormatTokenCount(details.OutputTokenCount, this._maxOutputTokens)}"
+            + $" | total: {FormatTokenCount(details.TotalTokenCount, this._maxContextWindowTokens)}";
+    }
+
+    private static string FormatTokenCount(long? count, int? budget)
+    {
+        if (count is null)
+        {
+            return "—";
+        }
+
+        if (budget is not null && budget.Value > 0)
+        {
+            double pct = (double)count.Value / budget.Value * 100;
+            return $"{count.Value:N0}/{budget.Value:N0} ({pct:F1}%)";
+        }
+
+        return $"{count.Value:N0}";
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Shared_Console/Spinner.cs

@@ -0,0 +1,77 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Harness.Shared.Console;
+
+/// <summary>
+/// A restartable spinner that can be started and stopped multiple times.
+/// </summary>
+internal sealed class Spinner : IDisposable
+{
+    private static readonly string[] s_frames = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
+
+    private CancellationTokenSource? _cts;
+    private Task? _task;
+
+    public void Start()
+    {
+        if (this._task is not null)
+        {
+            return;
+        }
+
+        this._cts = new CancellationTokenSource();
+        this._task = RunAsync(this._cts.Token);
+    }
+
+    public async Task StopAsync()
+    {
+        if (this._cts is null || this._task is null)
+        {
+            return;
+        }
+
+        this._cts.Cancel();
+        await this._task;
+        this._cts.Dispose();
+        this._cts = null;
+        this._task = null;
+    }
+
+    public void Dispose()
+    {
+        if (this._cts is not null && this._task is not null)
+        {
+            this._cts.Cancel();
+
+            // Block briefly to let the spinner task clean up.
+            // This prevents the background task from writing to the console after disposal.
+#pragma warning disable VSTHRD002 // Synchronous wait in Dispose is acceptable here — the spinner task completes quickly on cancellation.
+            this._task.Wait();
+#pragma warning restore VSTHRD002
+        }
+
+        this._cts?.Dispose();
+        this._cts = null;
+        this._task = null;
+    }
+
+    private static async Task RunAsync(CancellationToken cancellationToken)
+    {
+        int i = 0;
+        try
+        {
+            while (!cancellationToken.IsCancellationRequested)
+            {
+                System.Console.Write(s_frames[i % s_frames.Length]);
+                await Task.Delay(80, cancellationToken);
+                System.Console.Write("\b \b");
+                i++;
+            }
+        }
+        catch (OperationCanceledException)
+        {
+            // Clear the last spinner frame left on screen.
+            System.Console.Write("\b \b");
+        }
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Step01_Research/Harness_Step01_Research.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+    <ProjectReference Include="..\Harness_Shared_Console\Harness_Shared_Console.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/Harness/Harness_Step01_Research/Program.cs

@@ -0,0 +1,190 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to use a ChatClientAgent with the Harness AIContextProviders
+// (TodoProvider and AgentModeProvider) for interactive research tasks with web search
+// capabilities powered by Azure AI Foundry.
+// The agent plans research tasks, creates a todo list, gets user approval,
+// and then executes each step — all within an interactive conversation loop.
+//
+// Special commands:
+//   /todos  — Display the current todo list without invoking the agent.
+//   exit    — End the session.
+
+#pragma warning disable OPENAI001 // Suppress experimental API warnings for Responses API usage.
+#pragma warning disable MAAI001  // Suppress experimental API warnings for Agents AI experiments.
+
+using System.ClientModel.Primitives;
+using Azure.Identity;
+using Harness.Shared.Console;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Compaction;
+using Microsoft.Extensions.AI;
+using OpenAI;
+using OpenAI.Responses;
+using SampleApp;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_FOUNDRY_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_FOUNDRY_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_AI_MODEL_DEPLOYMENT_NAME") ?? "gpt-5.4";
+
+const int MaxContextWindowTokens = 1_050_000;
+const int MaxOutputTokens = 128_000;
+
+// Create a ChatClientAgent with the Harness providers (TodoProvider and AgentModeProvider)
+// and research-focused instructions including the mandatory planning workflow.
+var instructions =
+    """
+    You are a research assistant. When given a research topic, research it thoroughly using web search and web browsing.
+    Use your knowledge to form good search queries and hypotheses, but always verify claims with the tools available to you rather than relying on memory alone.
+
+    ## Mandatory planning workflow
+
+    For every new substantive user request, including short factual questions, your behavior is determined by the mode you are in.
+    If you are in plan mode, start with the *Plan Mode* steps, and if you are in execute mode, skip directly to the *Execute Mode* steps below.
+
+    *Plan Mode*
+
+    1. Analyze the request with the purpose of building a research plan.
+    2. Create a list of todo items.
+    3. If needed, use the provided tools to do some exploratory checks to help build a plan and determine what clarifying questions you may need from the user.
+    4. Ask for clarifications from the user where needed.
+      1. Ask each clarification one by one.
+      2. When asking for clarification and you have specific options in mind, present them to the user, so they can choose the option instead of having to retype the entire response.
+      3. Do not proceed until you have received all the needed clarifications.
+      4. Do short exploratory research if it helps with being able to ask sensible clarifications from the user.
+    5. Write the plan to a memory file, so that it is retained even if compaction happens. Make sure to update the plan file if the user requests changes.
+    6. Present the plan to the user and ask for approval to switch to execute mode and process the plan.
+    7. When approval is granted, always switch to execute mode (using the `AgentMode_Set` tool), and follow the steps for *Execute mode*.
+
+    *Execute Mode*
+
+    1. If you don't have a plan or tasks yet, analyse the user request and create tasks and a plan. (**Skip this step if you came from plan mode**)
+    2. Work autonomously — use your best judgement to make decisions and keep progressing without asking the user questions. The goal is to have a complete, useful result ready when the user returns.
+    3. If you encounter ambiguity or an unexpected situation during execution, choose the most reasonable option, note your choice, and keep going.
+    4. Mark tasks as completed as you finish them.
+    5. Continue working, thinking and calling tools until you have the research result for the user.
+
+    ## General Instructions
+
+    - You must check the current mode after any user input, since the user may have changed the mode themselves,
+      e.g. the user may have switched to 'plan' mode after a previous research task finished in 'execute' mode, meaning they want to review a plan first before execution.
+    - Explain your reasoning and thought process as you work through tasks.
+    - Explain what you learned and what you are going to do next between tool calls, so the user can follow along with your thought process.
+    - Avoid making more than 4 tool calls in a row without explaining what you are doing.
+    - Do not answer the underlying question before the plan has been presented and approved.
+    - This rule applies even when the answer seems obvious or the task seems small.
+    - For short requests, use a brief micro-plan rather than skipping planning. The only exceptions are:
+      - greetings,
+      - pure acknowledgments,
+      - clarification questions needed to form the plan,
+      - follow-up questions about results you have already presented,
+      - meta-discussion about the workflow itself.
+
+    **Todo management**
+
+    Mark each todo complete as you finish it so the list stays current.
+    If a todo turns out to be unnecessary or is blocked, remove it and briefly explain why.
+    Once the user finishes with a topic and moves onto a new one, clean up old completed todos by deleting them.
+
+    **Research quality**
+
+    Consult multiple sources when possible and cross-reference key claims.
+    When sources disagree, note the discrepancy and explain which source you consider more reliable and why.
+    If a web page fails to load or a search returns irrelevant results, try alternative search queries or sources before moving on.
+    Track your sources — you will need them when presenting results.
+
+    **Presenting results**
+
+    When presenting your final findings:
+    - Use clear sections with headings for each major topic or sub-question.
+    - Cite your sources inline (e.g., "According to [source name](URL), ...").
+    - End with a brief summary of key takeaways.
+    - Save the final research report to file memory so it survives compaction and can be referenced later.
+
+    **File memory**
+
+    Use the FileMemory_* tools to:
+    - Store downloaded search results or web pages.
+    - Store plans.
+    - Read the current plan to make sure tasks were done according to plan.
+    - Store findings.
+    - Check for relevant previously downloaded data / findings before starting new research.
+    """;
+
+// Create a compaction strategy based on the model's context window.
+// gpt-5.4: 1,050,000 token context window, 128,000 max output tokens.
+// Defaults: tool result eviction at 50% of input budget, truncation at 80%.
+var compactionStrategy = new ContextWindowCompactionStrategy(
+    maxContextWindowTokens: MaxContextWindowTokens,
+    maxOutputTokens: MaxOutputTokens);
+
+AIAgent agent =
+    // Create an OpenAIClient that communicates with the Foundry responses service.
+    new OpenAIClient(
+        // WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
+        // In production, consider using a specific credential (e.g., ManagedIdentityCredential) to avoid
+        // latency issues, unintended credential probing, and potential security risks from fallback mechanisms.
+        new BearerTokenPolicy(new DefaultAzureCredential(), "https://ai.azure.com/.default"),
+        new OpenAIClientOptions()
+        {
+            Endpoint = new Uri(endpoint),
+            RetryPolicy = new ClientRetryPolicy(3)          // Enable retries to improve resiliency.
+        })
+    .GetResponsesClient()
+    .AsIChatClientWithStoredOutputDisabled(deploymentName)  // We want to manage chat history locally (not stored in the responses service), so that we can manage compaction ourselves.
+
+    // Build a ChatClient Pipeline
+    .AsBuilder()
+    .UseFunctionInvocation()                                // We are building our own stack from scratch so we need to include Function Invocation ourselves.
+    .UsePerServiceCallChatHistoryPersistence()              // Save chat history updates to the session after each service call, rather than only at the end of the run.
+    .UseAIContextProviders(new CompactionProvider(compactionStrategy))  // Add Compaction before each service call to responses so that long function invocation loops don't overflow the context.
+
+    // Build our agent on top of the ChatClient Pipeline
+    .BuildAIAgent(
+        new ChatClientAgentOptions
+        {
+            Name = "ResearchAgent",
+            Description = "A research assistant that plans and executes research tasks.",
+            UseProvidedChatClientAsIs = true,                           // Since we built our own stack from scratch we need to tell the agent not to also add defaults like Function Invocation.
+            RequirePerServiceCallChatHistoryPersistence = true,         // Since we are added the per service call persistence ChatClient, we need to tell the agent to not also store chat history at the end of the run.
+            ChatHistoryProvider = new InMemoryChatHistoryProvider(      // Store chat history in memory in the session object. Will persist if the session is persisted.
+                new InMemoryChatHistoryProviderOptions
+                {
+                    ChatReducer = compactionStrategy.AsChatReducer(),   // Run compaction on the InMemory chat history when it gets too large.
+                }),
+            AIContextProviders =
+            [
+                new TodoProvider(),         // Add an AIContextProvider to allow the agent to create a TODO list, which is stored in the session.
+                new AgentModeProvider(),    // Add an AIContextProvider that tracks the agent mode and allows switching mode. Current mode is stored in the session.
+                new FileMemoryProvider(     // Add an AIContextProvider that can store memories in files under a session specific working folder.
+                    new FileSystemAgentFileStore(Path.Combine(AppContext.BaseDirectory, "agent-files")),
+                    (_) => new FileMemoryState() { WorkingFolder = DateTime.UtcNow.ToString("yyyyMMdd_HHmmss") + "_" + Guid.NewGuid().ToString() })
+            ],
+            ChatOptions = new ChatOptions
+            {
+                Instructions = instructions,
+                Tools =
+                [
+                    ResponseTool.CreateWebSearchTool().AsAITool(),          // Add the foundry hosted web search tool that runs in the service.
+                    new WebBrowsingTool(),                                  // Add a local web browsing tool that converts html to markdown.
+                ],
+                MaxOutputTokens = MaxOutputTokens,                          // Set a high token limit for long research tasks with many tool calls and long outputs.
+                Reasoning = new() { Effort = ReasoningEffort.Medium },
+            },
+        })
+    .AsBuilder()
+    .UseToolApproval()                                                      // Add the ability to auto approve tools once a user has said they don't want to be asked again. Approval rules are tied to the session.
+    .Build();
+
+// Run the interactive console session using the shared HarnessConsole helper.
+await HarnessConsole.RunAgentAsync(
+    agent,
+    title: "Research Assistant",
+    userPrompt: "Enter a research topic to get started.",
+    new HarnessConsoleOptions
+    {
+        MaxContextWindowTokens = MaxContextWindowTokens,
+        MaxOutputTokens = MaxOutputTokens,
+        EnablePlanningUx = true,
+        PlanningModeName = "plan",
+        ExecutionModeName = "execute"
+    });

dotnet/samples/02-agents/Harness/Harness_Step01_Research/README.md

@@ -0,0 +1,52 @@
+# What this sample demonstrates
+
+This sample demonstrates how to use a `ChatClientAgent` with the Harness `AIContextProviders` (`TodoProvider` and `AgentModeProvider`) for interactive research tasks with web search capabilities powered by Azure AI Foundry.
+
+Key features showcased:
+
+- **ChatClientAgent** — configured directly with Harness providers for planning and task management
+- **Web Search** — the agent can search the web for current information via `ResponseTool.CreateWebSearchTool()`
+- **TodoProvider** — the agent creates and manages a todo list to track research questions
+- **AgentModeProvider** — the agent switches between "plan" mode (breaking down the topic) and "execute" mode (answering each research question)
+- **Interactive conversation** — you can review the agent's plan, provide feedback, and approve before execution begins
+- **Streaming output** — responses are streamed token-by-token for a natural experience
+- **`/todos` command** — view the current todo list at any time without invoking the agent
+- **Mode-based coloring** — console output is colored based on the agent's current mode (cyan for plan, green for execute)
+
+## Prerequisites
+
+Before running this sample, ensure you have:
+
+1. An Azure AI Foundry project with a deployed model (e.g., `gpt-5.4`)
+2. Azure CLI installed and authenticated (`az login`)
+
+## Environment Variables
+
+Set the following environment variables:
+
+```bash
+# Required: Your Azure AI Foundry OpenAI endpoint
+export AZURE_FOUNDRY_OPENAI_ENDPOINT="https://your-project.services.ai.azure.com/openai/v1/"
+
+# Optional: Model deployment name (defaults to gpt-5.4)
+export AZURE_AI_MODEL_DEPLOYMENT_NAME="gpt-5.4"
+```
+
+## Running the Sample
+
+```bash
+cd dotnet
+dotnet run --project samples/02-agents/Harness/Harness_Step01_Research
+```
+
+## What to Expect
+
+The sample starts an interactive conversation loop. You can:
+
+1. **Enter a research topic** — the agent will analyze it and create a plan with todos
+2. **Review and adjust** — provide feedback on the plan, ask for changes, or approve it
+3. **Type `/todos`** — to see the current todo list at any time
+4. **Watch execution** — once approved, tell the agent to proceed and it will work through each todo
+5. **Type `exit`** — to end the session
+
+The prompt and agent output are colored by the current mode: **cyan** during planning, **green** during execution.

dotnet/samples/02-agents/Harness/Harness_Step01_Research/WebBrowsingTool.cs

@@ -0,0 +1,287 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.ComponentModel;
+using System.Net;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using Microsoft.Extensions.AI;
+
+namespace SampleApp;
+
+/// <summary>
+/// An AI function that downloads HTML pages and converts them to markdown.
+/// </summary>
+internal sealed partial class WebBrowsingTool : AIFunction
+{
+    private static readonly HttpClient s_httpClient = new();
+    private readonly AIFunction _inner = AIFunctionFactory.Create(DownloadUriAsync);
+
+    /// <inheritdoc/>
+    public override string Name => this._inner.Name;
+
+    /// <inheritdoc/>
+    public override string Description => this._inner.Description;
+
+    /// <inheritdoc/>
+    public override JsonElement JsonSchema => this._inner.JsonSchema;
+
+    /// <inheritdoc/>
+    protected override ValueTask<object?> InvokeCoreAsync(
+        AIFunctionArguments arguments,
+        CancellationToken cancellationToken) =>
+        this._inner.InvokeAsync(arguments, cancellationToken);
+
+    [Description("Fetch the html from the given url as markdown")]
+    private static async Task<string> DownloadUriAsync(
+        [Description("The URL to download")] string uri,
+        CancellationToken cancellationToken = default)
+    {
+        if (!Uri.TryCreate(uri, UriKind.Absolute, out Uri? parsedUri))
+        {
+            return $"Error: '{uri}' is not a valid URL.";
+        }
+
+        if (parsedUri.Scheme is not "http" and not "https")
+        {
+            return $"Error: Only HTTP and HTTPS URLs are supported. Got: '{parsedUri.Scheme}'.";
+        }
+
+        // NOTE: In production scenarios, consider also blocking requests to private/internal IP
+        // ranges (e.g., 10.x.x.x, 172.16-31.x.x, 192.168.x.x, 127.0.0.1, 169.254.169.254)
+        // to prevent SSRF attacks via prompt injection in web content.
+
+        try
+        {
+            string html = await s_httpClient.GetStringAsync(parsedUri, cancellationToken);
+            return HtmlToMarkdownConverter.Convert(html);
+        }
+        catch (HttpRequestException ex)
+        {
+            return $"Error downloading {uri}: {ex.Message}";
+        }
+    }
+
+    /// <summary>
+    /// A simple HTML to Markdown converter using regex-based transformations.
+    /// Handles the most common HTML elements without requiring external dependencies.
+    /// </summary>
+    private static partial class HtmlToMarkdownConverter
+    {
+        public static string Convert(string html)
+        {
+            // Extract body content if present, otherwise use the full HTML.
+            var bodyMatch = BodyRegex().Match(html);
+            string content = bodyMatch.Success ? bodyMatch.Groups[1].Value : html;
+
+            // Remove script, style, and head blocks.
+            content = ScriptRegex().Replace(content, string.Empty);
+            content = StyleRegex().Replace(content, string.Empty);
+            content = HeadRegex().Replace(content, string.Empty);
+            content = CommentRegex().Replace(content, string.Empty);
+
+            // Convert block elements before inline elements.
+            content = ConvertHeadings(content);
+            content = ConvertCodeBlocks(content);
+            content = ConvertBlockquotes(content);
+            content = ConvertLists(content);
+            content = ConvertHorizontalRules(content);
+
+            // Convert inline elements.
+            content = ConvertLinks(content);
+            content = ConvertImages(content);
+            content = ConvertBold(content);
+            content = ConvertItalic(content);
+            content = ConvertInlineCode(content);
+
+            // Convert structural elements.
+            content = ConvertParagraphs(content);
+            content = ConvertLineBreaks(content);
+
+            // Strip remaining HTML tags.
+            content = StripTagsRegex().Replace(content, string.Empty);
+
+            // Decode HTML entities.
+            content = WebUtility.HtmlDecode(content);
+
+            // Clean up excessive whitespace.
+            content = ExcessiveNewlinesRegex().Replace(content, "\n\n");
+
+            return content.Trim();
+        }
+
+        private static string ConvertHeadings(string html)
+        {
+            html = H1Regex().Replace(html, m => $"\n# {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            html = H2Regex().Replace(html, m => $"\n## {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            html = H3Regex().Replace(html, m => $"\n### {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            html = H4Regex().Replace(html, m => $"\n#### {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            html = H5Regex().Replace(html, m => $"\n##### {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            html = H6Regex().Replace(html, m => $"\n###### {StripInnerTags(m.Groups[1].Value).Trim()}\n");
+            return html;
+        }
+
+        private static string ConvertLinks(string html) =>
+            LinkRegex().Replace(html, m =>
+            {
+                string href = m.Groups[1].Value;
+                string text = StripInnerTags(m.Groups[2].Value).Trim();
+
+                // Skip javascript and data links.
+                if (href.StartsWith("javascript:", StringComparison.OrdinalIgnoreCase) ||
+                    href.StartsWith("data:", StringComparison.OrdinalIgnoreCase))
+                {
+                    return text;
+                }
+
+                return string.IsNullOrWhiteSpace(text) ? string.Empty : $"[{text}]({href})";
+            });
+
+        private static string ConvertImages(string html) =>
+            ImageRegex().Replace(html, m =>
+            {
+                string src = m.Groups[1].Value;
+                string alt = m.Groups[2].Value;
+
+                // Truncate data URIs.
+                if (src.StartsWith("data:", StringComparison.OrdinalIgnoreCase))
+                {
+                    src = src.Split(',')[0] + "...";
+                }
+
+                return $"![{alt}]({src})";
+            });
+
+        private static string ConvertBold(string html) =>
+            BoldRegex().Replace(html, m => $"**{m.Groups[2].Value}**");
+
+        private static string ConvertItalic(string html) =>
+            ItalicRegex().Replace(html, m => $"*{m.Groups[2].Value}*");
+
+        private static string ConvertInlineCode(string html) =>
+            InlineCodeRegex().Replace(html, m => $"`{m.Groups[1].Value}`");
+
+        private static string ConvertCodeBlocks(string html) =>
+            CodeBlockRegex().Replace(html, m => $"\n```\n{StripInnerTags(m.Groups[1].Value).Trim()}\n```\n");
+
+        private static string ConvertBlockquotes(string html) =>
+            BlockquoteRegex().Replace(html, m =>
+            {
+                string inner = StripInnerTags(m.Groups[1].Value).Trim();
+                // Prefix each line with "> ".
+                string quoted = string.Join("\n", inner.Split('\n').Select(line => $"> {line.Trim()}"));
+                return $"\n{quoted}\n";
+            });
+
+        private static string ConvertLists(string html)
+        {
+            // Unordered lists.
+            html = UlRegex().Replace(html, m =>
+            {
+                string items = LiRegex().Replace(m.Groups[1].Value, li => $"- {StripInnerTags(li.Groups[1].Value).Trim()}\n");
+                return $"\n{items}";
+            });
+
+            // Ordered lists.
+            html = OlRegex().Replace(html, m =>
+            {
+                int index = 1;
+                string items = LiRegex().Replace(m.Groups[1].Value, li => $"{index++}. {StripInnerTags(li.Groups[1].Value).Trim()}\n");
+                return $"\n{items}";
+            });
+
+            return html;
+        }
+
+        private static string ConvertHorizontalRules(string html) =>
+            HrRegex().Replace(html, "\n---\n");
+
+        private static string ConvertParagraphs(string html) =>
+            ParagraphRegex().Replace(html, m => $"\n\n{m.Groups[1].Value}\n\n");
+
+        private static string ConvertLineBreaks(string html) =>
+            BrRegex().Replace(html, "\n");
+
+        private static string StripInnerTags(string html) =>
+            StripTagsRegex().Replace(html, string.Empty);
+
+        // Source-generated regex patterns for performance and AOT compatibility.
+
+        [GeneratedRegex(@"<body[^>]*>(.*?)</body>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex BodyRegex();
+
+        [GeneratedRegex(@"<script[^>]*>.*?</script>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex ScriptRegex();
+
+        [GeneratedRegex(@"<style[^>]*>.*?</style>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex StyleRegex();
+
+        [GeneratedRegex(@"<head[^>]*>.*?</head>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex HeadRegex();
+
+        [GeneratedRegex(@"<!--.*?-->", RegexOptions.Singleline)]
+        private static partial Regex CommentRegex();
+
+        [GeneratedRegex(@"<h1[^>]*>(.*?)</h1>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H1Regex();
+
+        [GeneratedRegex(@"<h2[^>]*>(.*?)</h2>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H2Regex();
+
+        [GeneratedRegex(@"<h3[^>]*>(.*?)</h3>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H3Regex();
+
+        [GeneratedRegex(@"<h4[^>]*>(.*?)</h4>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H4Regex();
+
+        [GeneratedRegex(@"<h5[^>]*>(.*?)</h5>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H5Regex();
+
+        [GeneratedRegex(@"<h6[^>]*>(.*?)</h6>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex H6Regex();
+
+        [GeneratedRegex(@"<a\s[^>]*href=[""']([^""']*)[""'][^>]*>(.*?)</a>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex LinkRegex();
+
+        [GeneratedRegex(@"<img\s[^>]*src=[""']([^""']*)[""'][^>]*?(?:alt=[""']([^""']*)[""'])?[^>]*/?>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex ImageRegex();
+
+        [GeneratedRegex(@"<(strong|b)\b[^>]*>(.*?)</\1>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex BoldRegex();
+
+        [GeneratedRegex(@"<(em|i)\b[^>]*>(.*?)</\1>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex ItalicRegex();
+
+        [GeneratedRegex(@"<code[^>]*>(.*?)</code>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex InlineCodeRegex();
+
+        [GeneratedRegex(@"<pre[^>]*>(.*?)</pre>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex CodeBlockRegex();
+
+        [GeneratedRegex(@"<blockquote[^>]*>(.*?)</blockquote>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex BlockquoteRegex();
+
+        [GeneratedRegex(@"<ul[^>]*>(.*?)</ul>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex UlRegex();
+
+        [GeneratedRegex(@"<ol[^>]*>(.*?)</ol>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex OlRegex();
+
+        [GeneratedRegex(@"<li[^>]*>(.*?)</li>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex LiRegex();
+
+        [GeneratedRegex(@"<hr\s*/?>", RegexOptions.IgnoreCase)]
+        private static partial Regex HrRegex();
+
+        [GeneratedRegex(@"<p[^>]*>(.*?)</p>", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
+        private static partial Regex ParagraphRegex();
+
+        [GeneratedRegex(@"<br\s*/?>", RegexOptions.IgnoreCase)]
+        private static partial Regex BrRegex();
+
+        [GeneratedRegex(@"<[^>]+>")]
+        private static partial Regex StripTagsRegex();
+
+        [GeneratedRegex(@"\n{3,}")]
+        private static partial Regex ExcessiveNewlinesRegex();
+    }
+}

dotnet/samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents/Harness_Step02_Research_WithSubAgents.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+    <ProjectReference Include="..\Harness_Shared_Console\Harness_Shared_Console.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents/Program.cs

@@ -0,0 +1,106 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to use the SubAgentsProvider to delegate work to sub-agents.
+// A parent agent is given a list of stock tickers and instructed to find the closing price
+// for each ticker on December 31, 2025. It delegates the web searches to a sub-agent
+// equipped with Foundry's hosted web search tool.
+//
+// Special commands:
+//   exit    — End the session.
+
+#pragma warning disable OPENAI001 // Suppress experimental API warnings for Responses API usage.
+#pragma warning disable MAAI001  // Suppress experimental API warnings for Agents AI experiments.
+
+using System.ClientModel.Primitives;
+using Azure.Identity;
+using Harness.Shared.Console;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+using OpenAI;
+using OpenAI.Responses;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_FOUNDRY_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_FOUNDRY_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_AI_MODEL_DEPLOYMENT_NAME") ?? "gpt-5.4";
+
+// --- Sub-agent: Web Search Agent ---
+// This agent can search the web and is used by the parent agent to look up stock prices.
+AIAgent webSearchAgent =
+    new OpenAIClient(
+        new BearerTokenPolicy(new DefaultAzureCredential(), "https://ai.azure.com/.default"),
+        new OpenAIClientOptions()
+        {
+            Endpoint = new Uri(endpoint),
+            RetryPolicy = new ClientRetryPolicy(3)
+        })
+    .GetResponsesClient()
+    .AsIChatClientWithStoredOutputDisabled(deploymentName)
+    .AsAIAgent(
+        new ChatClientAgentOptions
+        {
+            Name = "WebSearchAgent",
+            Description = "An agent that can search the web to find information.",
+            ChatOptions = new ChatOptions
+            {
+                Instructions = "You are a web search assistant. When asked to find information, use the web search tool to look it up and return a concise, factual answer.",
+                Tools =
+                [
+                    ResponseTool.CreateWebSearchTool().AsAITool(),
+                ],
+            },
+        });
+
+// --- Parent agent: Stock Price Researcher ---
+// This agent orchestrates the sub-agent to look up stock prices in parallel.
+var parentInstructions =
+    """
+    You are a stock price research assistant. You have access to a web search sub-agent that can look up information on the web.
+
+    When given a list of stock tickers, your job is to find the closing price for each ticker on December 31, 2025.
+
+    ## Workflow
+
+    1. For each ticker, start a sub-task on the WebSearchAgent asking it to find the closing price on December 31, 2025.
+       - Start all sub-tasks before waiting for any of them to complete, so they run concurrently.
+    2. Wait for all sub-tasks to complete.
+    3. Retrieve the results from each sub-task.
+    4. Present a summary table with the ticker symbol and closing price for each stock.
+    5. Clear all completed tasks to free memory.
+
+    ## Important
+
+    - Always delegate web searches to the WebSearchAgent sub-agent. Do not try to answer from memory.
+    - If a sub-task fails or returns unclear results, continue the task with a more specific query.
+    - Present results in a clean markdown table format.
+    """;
+
+AIAgent parentAgent =
+    new OpenAIClient(
+        new BearerTokenPolicy(new DefaultAzureCredential(), "https://ai.azure.com/.default"),
+        new OpenAIClientOptions()
+        {
+            Endpoint = new Uri(endpoint),
+            RetryPolicy = new ClientRetryPolicy(3)
+        })
+    .GetResponsesClient()
+    .AsIChatClientWithStoredOutputDisabled(deploymentName)
+    .AsAIAgent(
+        new ChatClientAgentOptions
+        {
+            Name = "StockPriceResearcher",
+            Description = "An agent that researches stock prices using sub-agents.",
+            AIContextProviders =
+            [
+                new SubAgentsProvider([webSearchAgent]),
+            ],
+            ChatOptions = new ChatOptions
+            {
+                Instructions = parentInstructions,
+                MaxOutputTokens = 16_000,
+            },
+        });
+
+// Run the interactive console session.
+await HarnessConsole.RunAgentAsync(
+    parentAgent,
+    title: "Stock Price Researcher (SubAgents Demo)",
+    userPrompt: "Enter a list of stock tickers (e.g., BAC, MSFT, BA):");

dotnet/samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents/README.md

@@ -0,0 +1,53 @@
+# Harness Step 02 — SubAgents (Stock Price Research)
+
+This sample demonstrates how to use the **SubAgentsProvider** to delegate work from a parent agent to sub-agents.
+
+## What It Does
+
+A parent agent receives a list of stock tickers and uses a web-search sub-agent to find the closing price for each ticker on December 31, 2025. The sub-tasks run concurrently, and results are presented in a summary table.
+
+### Architecture
+
+```
+┌─────────────────────────────────┐
+│     StockPriceResearcher        │
+│         (Parent Agent)          │
+│                                 │
+│  SubAgentsProvider              │
+│    ├─ SubAgents_StartTask       │
+│    ├─ SubAgents_WaitFor...      │
+│    ├─ SubAgents_GetTaskResults  │
+│    └─ ...                       │
+└────────────┬────────────────────┘
+             │  delegates to
+             ▼
+┌─────────────────────────────────┐
+│       WebSearchAgent            │
+│        (Sub-Agent)              │
+│                                 │
+│  Tools:                         │
+│    └─ web_search (Foundry)      │
+└─────────────────────────────────┘
+```
+
+## Prerequisites
+
+- An Azure AI Foundry endpoint with an OpenAI model deployment
+- Set the following environment variables:
+  - `AZURE_FOUNDRY_OPENAI_ENDPOINT` — Your Foundry OpenAI endpoint URL
+  - `AZURE_AI_MODEL_DEPLOYMENT_NAME` — Model deployment name (defaults to `gpt-5.4`)
+
+## Running the Sample
+
+```bash
+cd dotnet/samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents
+dotnet run
+```
+
+When prompted, enter a list of stock tickers such as:
+
+```
+BAC, MSFT, BA
+```
+
+The parent agent will delegate each ticker lookup to the web search sub-agent concurrently and present the results in a table.

dotnet/samples/02-agents/Harness/Harness_Step03_DataProcessing/Harness_Step03_DataProcessing.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+    <ProjectReference Include="..\Harness_Shared_Console\Harness_Shared_Console.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Content Include="data\**\*" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/02-agents/Harness/Harness_Step03_DataProcessing/Program.cs

@@ -0,0 +1,110 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to use a ChatClientAgent with the FileAccessProvider
+// to give an agent access to a folder of CSV data files. The agent can read, analyze,
+// and extract information from the data, then write results back as new files.
+//
+// The sample includes a pre-populated `data/` folder with sales transaction data.
+// Ask the agent to analyze the data, produce summaries, or create new output files.
+//
+// Special commands:
+//   exit — End the session.
+
+#pragma warning disable OPENAI001 // Suppress experimental API warnings for Responses API usage.
+#pragma warning disable MAAI001  // Suppress experimental API warnings for Agents AI experiments.
+
+using System.ClientModel.Primitives;
+using Azure.Identity;
+using Harness.Shared.Console;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Compaction;
+using Microsoft.Extensions.AI;
+using OpenAI;
+using OpenAI.Responses;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_FOUNDRY_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_FOUNDRY_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_AI_MODEL_DEPLOYMENT_NAME") ?? "gpt-5.4";
+
+const int MaxContextWindowTokens = 1_050_000;
+const int MaxOutputTokens = 128_000;
+
+// Point the file store at the data/ folder that ships with the sample.
+var dataFolder = Path.Combine(AppContext.BaseDirectory, "data");
+var fileStore = new FileSystemAgentFileStore(dataFolder);
+
+var instructions =
+    """
+    You are a data analyst assistant. You have access to a folder of data files via the FileAccess_* tools.
+
+    ## Getting started
+    - Start by listing available files with FileAccess_ListFiles to see what data is available.
+    - Read the files to understand their structure and contents.
+
+    ## Working with data
+    - When asked to analyze data, read the relevant files first, then perform the analysis.
+    - Show your analysis clearly with tables, summaries, and key insights.
+    - When calculations are needed, work through them step by step and show your reasoning.
+
+    ## Writing output
+    - When asked to produce output files (e.g., reports, summaries, filtered data), use FileAccess_SaveFile to write them.
+    - Use appropriate file formats: CSV for tabular data, Markdown for reports.
+    - Confirm what you wrote and where.
+
+    ## Important
+    - Never modify or delete the original input data files unless explicitly asked to do so.
+    - If asked about data you haven't read yet, read it first before answering.
+    - Always explain your reasoning and thought process as you work through tasks.
+    - Always explain what you learned and what you are going to do next between tool calls, so the user can follow along with your thought process.
+    """;
+
+// Create a compaction strategy based on the model's context window.
+var compactionStrategy = new ContextWindowCompactionStrategy(
+    maxContextWindowTokens: MaxContextWindowTokens,
+    maxOutputTokens: MaxOutputTokens);
+
+AIAgent agent =
+    new OpenAIClient(
+        new BearerTokenPolicy(new DefaultAzureCredential(), "https://ai.azure.com/.default"),
+        new OpenAIClientOptions()
+        {
+            Endpoint = new Uri(endpoint),
+            RetryPolicy = new ClientRetryPolicy(3)
+        })
+    .GetResponsesClient()
+    .AsIChatClientWithStoredOutputDisabled(deploymentName)
+
+    .AsBuilder()
+    .UseFunctionInvocation()
+    .UsePerServiceCallChatHistoryPersistence()
+    .UseAIContextProviders(new CompactionProvider(compactionStrategy))
+
+    .BuildAIAgent(
+        new ChatClientAgentOptions
+        {
+            Name = "DataAnalyst",
+            Description = "A data analyst assistant that reads, analyzes, and processes data files.",
+            UseProvidedChatClientAsIs = true,
+            RequirePerServiceCallChatHistoryPersistence = true,
+            ChatHistoryProvider = new InMemoryChatHistoryProvider(
+                new InMemoryChatHistoryProviderOptions
+                {
+                    ChatReducer = compactionStrategy.AsChatReducer(),
+                }),
+            AIContextProviders =
+            [
+                new FileAccessProvider(fileStore),
+            ],
+            ChatOptions = new ChatOptions
+            {
+                Instructions = instructions,
+                MaxOutputTokens = MaxOutputTokens,
+            },
+        })
+    .AsBuilder()
+    .Build();
+
+// Run the interactive console session.
+await HarnessConsole.RunAgentAsync(
+    agent,
+    title: "Data Processing Assistant",
+    userPrompt: "Ask me to analyze the data files, produce summaries, or create output files.");

dotnet/samples/02-agents/Harness/Harness_Step03_DataProcessing/README.md

@@ -0,0 +1,65 @@
+# What this sample demonstrates
+
+This sample demonstrates how to use a `ChatClientAgent` with the `FileAccessProvider` to give an agent access to a folder of data files for reading, analyzing, and writing results.
+
+Key features showcased:
+
+- **FileAccessProvider** — gives the agent tools to read, write, list, search, and delete files in a shared data folder
+- **CSV data processing** — the agent reads sales transaction data and performs analysis on demand
+- **Output file creation** — the agent can write summaries, filtered data, or reports back to the data folder
+- **Streaming output** — responses are streamed token-by-token for a natural experience
+- **No planning mode** — this is a simple conversational sample focused on data interaction
+
+## Prerequisites
+
+Before running this sample, ensure you have:
+
+1. An Azure AI Foundry project with a deployed model (e.g., `gpt-5.4`)
+2. Azure CLI installed and authenticated (`az login`)
+
+## Environment Variables
+
+Set the following environment variables:
+
+```bash
+# Required: Your Azure AI Foundry OpenAI endpoint
+export AZURE_FOUNDRY_OPENAI_ENDPOINT="https://your-project.services.ai.azure.com/openai/v1/"
+
+# Optional: Model deployment name (defaults to gpt-5.4)
+export AZURE_AI_MODEL_DEPLOYMENT_NAME="gpt-5.4"
+```
+
+## Running the Sample
+
+```bash
+cd dotnet
+dotnet run --project samples/02-agents/Harness/Harness_Step03_DataProcessing
+```
+
+## What to Expect
+
+The sample starts an interactive conversation with a data analyst agent. The `data/` folder contains a `sales.csv` file with ~50 rows of sales transaction data (date, product, category, quantity, unit price, region, salesperson).
+
+You can ask the agent to:
+
+1. **List available files** — "What files do you have?"
+2. **Analyze the data** — "What are the total sales by region?" or "Which salesperson has the highest revenue?"
+3. **Create output files** — "Create a summary report as a markdown file" or "Write a CSV with monthly totals"
+4. **Search for patterns** — "Find all transactions over $1000"
+5. **Type `exit`** — to end the session
+
+E.g. try the following prompt `Please process the sales.csv file by first filtering it to only North region sales, and then calculating the sum of sales by person. I'd like to write the results of the processing to north_region_totals.csv`.
+
+## Sample Data
+
+The included `data/sales.csv` contains sales transactions from January to March 2025 with the following columns:
+
+| Column | Description |
+| --- | --- |
+| `date` | Transaction date (YYYY-MM-DD) |
+| `product` | Product name |
+| `category` | Product category (Electronics, Furniture, Stationery) |
+| `quantity` | Units sold |
+| `unit_price` | Price per unit |
+| `region` | Sales region (North, South, West) |
+| `salesperson` | Name of the salesperson |

dotnet/samples/02-agents/Harness/Harness_Step03_DataProcessing/data/sales.csv

@@ -0,0 +1,50 @@
+date,product,category,quantity,unit_price,region,salesperson
+2025-01-03,Laptop Pro 15,Electronics,2,1299.99,North,Alice
+2025-01-05,Ergonomic Chair,Furniture,5,349.50,South,Bob
+2025-01-07,Wireless Mouse,Electronics,12,24.99,North,Alice
+2025-01-08,Standing Desk,Furniture,1,599.00,West,Carol
+2025-01-10,USB-C Hub,Electronics,8,45.99,North,David
+2025-01-12,Monitor 27in,Electronics,3,429.00,South,Bob
+2025-01-14,Desk Lamp,Furniture,6,79.95,West,Carol
+2025-01-15,Keyboard Mech,Electronics,4,149.99,North,Alice
+2025-01-17,Filing Cabinet,Furniture,2,189.00,South,David
+2025-01-20,Webcam HD,Electronics,10,89.99,West,Bob
+2025-01-22,Laptop Pro 15,Electronics,1,1299.99,South,Carol
+2025-01-24,Ergonomic Chair,Furniture,3,349.50,North,Alice
+2025-01-25,Notebook Pack,Stationery,20,12.99,South,David
+2025-01-27,Wireless Mouse,Electronics,15,24.99,West,Carol
+2025-01-28,Whiteboard,Stationery,4,129.00,North,Bob
+2025-01-30,Standing Desk,Furniture,2,599.00,South,Alice
+2025-02-02,USB-C Hub,Electronics,6,45.99,West,David
+2025-02-04,Monitor 27in,Electronics,2,429.00,North,Carol
+2025-02-05,Desk Lamp,Furniture,8,79.95,South,Bob
+2025-02-07,Keyboard Mech,Electronics,5,149.99,West,Alice
+2025-02-09,Filing Cabinet,Furniture,1,189.00,North,David
+2025-02-11,Webcam HD,Electronics,7,89.99,South,Carol
+2025-02-13,Laptop Pro 15,Electronics,3,1299.99,West,Bob
+2025-02-15,Notebook Pack,Stationery,30,12.99,North,Alice
+2025-02-17,Ergonomic Chair,Furniture,4,349.50,South,David
+2025-02-19,Wireless Mouse,Electronics,20,24.99,North,Carol
+2025-02-20,Whiteboard,Stationery,2,129.00,West,Bob
+2025-02-22,Standing Desk,Furniture,1,599.00,North,Alice
+2025-02-24,USB-C Hub,Electronics,10,45.99,South,David
+2025-02-26,Monitor 27in,Electronics,4,429.00,West,Carol
+2025-02-28,Desk Lamp,Furniture,3,79.95,North,Bob
+2025-03-02,Keyboard Mech,Electronics,6,149.99,South,Alice
+2025-03-04,Filing Cabinet,Furniture,3,189.00,West,David
+2025-03-06,Webcam HD,Electronics,9,89.99,North,Carol
+2025-03-08,Laptop Pro 15,Electronics,2,1299.99,South,Bob
+2025-03-10,Notebook Pack,Stationery,25,12.99,West,Alice
+2025-03-12,Ergonomic Chair,Furniture,6,349.50,North,David
+2025-03-14,Wireless Mouse,Electronics,18,24.99,South,Carol
+2025-03-15,Whiteboard,Stationery,5,129.00,North,Bob
+2025-03-17,Standing Desk,Furniture,3,599.00,West,Alice
+2025-03-19,USB-C Hub,Electronics,7,45.99,North,David
+2025-03-21,Monitor 27in,Electronics,5,429.00,South,Carol
+2025-03-23,Desk Lamp,Furniture,4,79.95,West,Bob
+2025-03-25,Keyboard Mech,Electronics,3,149.99,North,Alice
+2025-03-27,Filing Cabinet,Furniture,2,189.00,South,David
+2025-03-28,Webcam HD,Electronics,11,89.99,West,Carol
+2025-03-29,Laptop Pro 15,Electronics,1,1299.99,North,Bob
+2025-03-30,Notebook Pack,Stationery,15,12.99,South,Alice
+2025-03-31,Ergonomic Chair,Furniture,2,349.50,West,David

dotnet/samples/02-agents/Harness/README.md

@@ -0,0 +1,11 @@
+# Harness Agent Samples
+
+Samples demonstrating the [Harness AIContextProviders](../../../src/Microsoft.Agents.AI/Harness/) — reusable providers that add planning, task management, and mode tracking to any `ChatClientAgent`.
+
+## Samples
+
+| Sample | Description |
+| --- | --- |
+| [Harness_Step01_Research](./Harness_Step01_Research/README.md) | Using a ChatClientAgent with TodoProvider and AgentModeProvider for research, showcasing planning mode and todo management |
+| [Harness_Step02_Research_WithSubAgents](./Harness_Step02_Research_WithSubAgents/README.md) | Using SubAgentsProvider to delegate stock price lookups to a web-search sub-agent concurrently |
+| [Harness_Step03_DataProcessing](./Harness_Step03_DataProcessing/README.md) | Using FileAccessProvider to give an agent access to CSV data files for reading, analysis, and output generation |

dotnet/samples/02-agents/README.md

@@ -16,6 +16,8 @@ The getting started samples demonstrate the fundamental concepts and functionali
 | [Agent With Anthropic](./AgentWithAnthropic/README.md) | Getting started with agents using Anthropic Claude |
 | [Model Context Protocol](./ModelContextProtocol/README.md) | Getting started with Model Context Protocol |
 | [Agent Skills](./AgentSkills/README.md) | Getting started with Agent Skills |
+| [Agent Harness with built-in tools](./Harness/README.md) | Demonstrating how to build an Agent Harness with built-in planning, todo, and mode management tooling |
 | [Declarative Agents](./DeclarativeAgents) | Loading and executing AI agents from YAML configuration files |
 | [AG-UI](./AGUI/README.md) | Getting started with AG-UI (Agent UI Protocol) servers and clients |
 | [Dev UI](./DevUI/README.md) | Interactive web interface for testing and debugging AI agents during development |
+| [A2A Agents](./A2A/README.md) | Working with Agent-to-Agent (A2A) specific features |

dotnet/samples/03-workflows/Declarative/InvokeHttpRequest/InvokeHttpRequest.csproj

@@ -0,0 +1,38 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <InjectIsExternalInitOnLegacy>true</InjectIsExternalInitOnLegacy>
+    <InjectSharedFoundryAgents>true</InjectSharedFoundryAgents>
+    <InjectSharedWorkflowsExecution>true</InjectSharedWorkflowsExecution>
+    <InjectSharedWorkflowsSettings>true</InjectSharedWorkflowsSettings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
+    <PackageReference Include="Microsoft.Extensions.Logging" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Workflows.Declarative\Microsoft.Agents.AI.Workflows.Declarative.csproj" />
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Workflows.Declarative.Foundry\Microsoft.Agents.AI.Workflows.Declarative.Foundry.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="InvokeHttpRequest.yaml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

dotnet/samples/03-workflows/Declarative/InvokeHttpRequest/InvokeHttpRequest.yaml

@@ -0,0 +1,76 @@
+#
+# This workflow demonstrates using HttpRequestAction to call a REST API directly
+# from the workflow without going through an AI agent first.
+#
+# HttpRequestAction allows workflows to:
+# - Fetch data from external HTTP endpoints
+# - Store the parsed response in workflow variables for later use
+# - Add the response body to the conversation so a downstream agent can
+#   answer questions based on it
+#
+# This sample fetches public metadata for the dotnet/runtime repository from
+# the GitHub REST API (no authentication required) and uses an agent to
+# answer follow-up questions about it.
+#
+# Example input:
+# How many subscribers does the repository have?
+#
+kind: Workflow
+trigger:
+
+  kind: OnConversationStart
+  id: workflow_invoke_http_request_demo
+  actions:
+
+    # Capture the original user message for input to the follow-up agent.
+    - kind: SetVariable
+      id: set_user_message
+      variable: Local.InputMessage
+      value: =System.LastMessage
+
+    # Set the repository org/name used to form the request URL.
+    - kind: SetVariable
+      id: set_repo_name
+      variable: Local.RepoName
+      value: microsoft/agent-framework
+
+    # Invoke the GitHub repo API. The response body is parsed into Local.RepoInfo
+    # and also added to the conversation (via conversationId) so the agent below
+    # can answer questions based on it.
+    - kind: HttpRequestAction
+      id: fetch_repo_info
+      conversationId: =System.ConversationId
+      method: GET
+      url: =Concatenate("https://api.github.com/repos/", Local.RepoName)
+      headers:
+        Accept: application/vnd.github+json
+        User-Agent: agent-framework-sample
+      response: Local.RepoInfo
+
+    # Display a confirmation message showing key fields from the parsed response.
+    - kind: SendMessage
+      id: show_repo_summary
+      message: "Fetched repo: visibility={Local.RepoInfo.visibility}, description={Local.RepoInfo.description}"
+
+    # Use the agent to summarize the repo using the conversation context.
+    - kind: InvokeAzureAgent
+      id: summarize_repo
+      conversationId: =System.ConversationId
+      agent:
+        name: GitHubRepoInfoAgent
+      input:
+        messages: =UserMessage("Please provide a brief summary of this GitHub repository based on the data already in the conversation.")
+      output:
+        autoSend: true
+        messages: Local.AgentResponse
+
+    # Allow the user to ask follow-up questions about the repo in a loop.
+    - kind: InvokeAzureAgent
+      id: invoke_followup
+      conversationId: =System.ConversationId
+      agent:
+        name: GitHubRepoInfoAgent
+      input:
+        messages: =Local.InputMessage
+        externalLoop:
+          when: =Upper(System.LastMessage.Text) <> "EXIT"

dotnet/samples/03-workflows/Declarative/InvokeHttpRequest/Program.cs

@@ -0,0 +1,95 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure.AI.Projects;
+using Azure.AI.Projects.Agents;
+using Azure.Identity;
+using Microsoft.Agents.AI.Workflows.Declarative;
+using Microsoft.Extensions.Configuration;
+using Shared.Foundry;
+using Shared.Workflows;
+
+namespace Demo.Workflows.Declarative.InvokeHttpRequest;
+
+/// <summary>
+/// Demonstrates a workflow that uses HttpRequestAction to call a REST API
+/// directly from the workflow.
+/// </summary>
+/// <remarks>
+/// <para>
+/// The HttpRequestAction allows workflows to issue HTTP requests and:
+/// </para>
+/// <list type="bullet">
+/// <item>Fetch data from external REST endpoints</item>
+/// <item>Store the parsed response in workflow variables</item>
+/// <item>Add the response body to the conversation so an agent can answer
+///       questions based on it</item>
+/// </list>
+/// <para>
+/// This sample fetches public metadata for the dotnet/runtime repository from
+/// the GitHub REST API (no authentication required) and uses a Foundry agent
+/// to answer follow-up questions about it. Type "EXIT" to end the conversation.
+/// </para>
+/// <para>
+/// See the README.md file in the parent folder (../README.md) for detailed
+/// information about the configuration required to run this sample.
+/// </para>
+/// </remarks>
+internal sealed class Program
+{
+    public static async Task Main(string[] args)
+    {
+        // Initialize configuration
+        IConfiguration configuration = Application.InitializeConfig();
+        Uri foundryEndpoint = new(configuration.GetValue(Application.Settings.FoundryEndpoint));
+
+        // Ensure sample agent exists in Foundry. The agent has no tools - it answers
+        // questions about the GitHub repository using only the JSON data that the
+        // HttpRequestAction adds to the conversation.
+        await CreateAgentAsync(foundryEndpoint, configuration);
+
+        // Get input from command line or console
+        string workflowInput = Application.GetInput(args);
+
+        // The default HttpRequestHandler is sufficient for this sample because the
+        // GitHub REST endpoint used here does not require authentication. For
+        // authenticated endpoints, supply a custom Func<HttpRequestInfo, ..., HttpClient?>
+        // to DefaultHttpRequestHandler so each request can be routed through a
+        // pre-configured (cached) HttpClient with the appropriate credentials.
+        await using DefaultHttpRequestHandler httpRequestHandler = new();
+
+        // Create the workflow factory with the HTTP request handler
+        WorkflowFactory workflowFactory = new("InvokeHttpRequest.yaml", foundryEndpoint)
+        {
+            HttpRequestHandler = httpRequestHandler
+        };
+
+        // Execute the workflow
+        WorkflowRunner runner = new() { UseJsonCheckpoints = true };
+        await runner.ExecuteAsync(workflowFactory.CreateWorkflow, workflowInput);
+    }
+
+    private static async Task CreateAgentAsync(Uri foundryEndpoint, IConfiguration configuration)
+    {
+        // WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
+        AIProjectClient aiProjectClient = new(foundryEndpoint, new DefaultAzureCredential());
+
+        await aiProjectClient.CreateAgentAsync(
+            agentName: "GitHubRepoInfoAgent",
+            agentDefinition: DefineAgent(configuration),
+            agentDescription: "Answers questions about a GitHub repository using HTTP response data in the conversation");
+    }
+
+    private static DeclarativeAgentDefinition DefineAgent(IConfiguration configuration)
+    {
+        return new DeclarativeAgentDefinition(configuration.GetValue(Application.Settings.FoundryModel))
+        {
+            Instructions =
+                """
+                Answer the user's questions about the GitHub repository using only the
+                JSON data already present in the conversation history.
+                If the answer is not contained in the conversation, say so plainly
+                rather than guessing. Be concise and helpful.
+                """
+        };
+    }
+}

dotnet/samples/04-hosting/.gitignore

@@ -0,0 +1 @@
+**/Properties/launchSettings.json

dotnet/samples/04-hosting/DurableWorkflows/AzureFunctions/01_SequentialWorkflow/README.md

@@ -65,6 +65,53 @@ Workflow orchestration started for CancelOrder. Orchestration runId: abc123def45
 >
 > If not provided, a unique run ID is auto-generated.
 
+### Wait for the Workflow Result
+
+By default, the HTTP endpoint returns `202 Accepted` immediately with the run ID. If you want to wait for the workflow to complete and get the result in the response, add the `x-ms-wait-for-response: true` header:
+
+Bash (Linux/macOS/WSL):
+
+```bash
+curl -X POST http://localhost:7071/api/workflows/CancelOrder/run \
+    -H "Content-Type: text/plain" \
+    -H "x-ms-wait-for-response: true" \
+    -d "12345"
+```
+
+PowerShell:
+
+```powershell
+Invoke-RestMethod -Method Post `
+    -Uri http://localhost:7071/api/workflows/CancelOrder/run `
+    -ContentType text/plain `
+    -Headers @{ "x-ms-wait-for-response" = "true" } `
+    -Body "12345"
+```
+
+The response will contain the workflow result as plain text (200 OK):
+
+```text
+Cancellation email sent for order 12345 to jerry@example.com.
+```
+
+To get the result as JSON, also include the `Accept: application/json` header:
+
+```bash
+curl -X POST http://localhost:7071/api/workflows/CancelOrder/run \
+    -H "Content-Type: text/plain" \
+    -H "x-ms-wait-for-response: true" \
+    -H "Accept: application/json" \
+    -d "12345"
+```
+
+```json
+{
+    "runId": "abc123def456",
+    "workflowStatus": "Completed",
+    "result": "Cancellation email sent for order 12345 to jerry@example.com."
+}
+```
+
 In the function app logs, you will see the sequential execution of each executor:
 
 ```text

dotnet/samples/04-hosting/DurableWorkflows/AzureFunctions/01_SequentialWorkflow/demo.http

@@ -7,6 +7,21 @@ Content-Type: text/plain
 
 12345
 
+### Cancel an order and wait for the result
+POST {{authority}}/api/workflows/CancelOrder/run
+Content-Type: text/plain
+x-ms-wait-for-response: true
+
+12345
+
+### Cancel an order and wait for the result (JSON response)
+POST {{authority}}/api/workflows/CancelOrder/run
+Content-Type: text/plain
+Accept: application/json
+x-ms-wait-for-response: true
+
+12345
+
 ### Cancel an order with a custom run ID
 POST {{authority}}/api/workflows/CancelOrder/run?runId=my-custom-id-123
 Content-Type: text/plain
@@ -19,6 +34,13 @@ Content-Type: text/plain
 
 12345
 
+### Get order status and wait for the result
+POST {{authority}}/api/workflows/OrderStatus/run
+Content-Type: text/plain
+x-ms-wait-for-response: true
+
+12345
+
 ### Batch cancel orders with a complex JSON input
 POST {{authority}}/api/workflows/BatchCancelOrders/run
 Content-Type: application/json

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/.env.example

@@ -0,0 +1,2 @@
+ASPNETCORE_URLS=http://+:8088
+ASPNETCORE_ENVIRONMENT=Development

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/Dockerfile

@@ -0,0 +1,17 @@
+# Use the official .NET 10.0 ASP.NET runtime as a parent image
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+COPY . .
+RUN dotnet restore
+RUN dotnet publish -c Release -o /app/publish
+
+# Final stage
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedInvocationsEchoAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/Dockerfile.contributor

@@ -0,0 +1,19 @@
+# Dockerfile for contributors building from the agent-framework repository source.
+#
+# This project uses ProjectReference to the local Microsoft.Agents.AI.Abstractions source,
+# which means a standard multi-stage Docker build cannot resolve dependencies outside
+# this folder. Instead, pre-publish the app targeting the container runtime and copy
+# the output into the container:
+#
+#   dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+#   docker build -f Dockerfile.contributor -t hosted-invocations-echo-agent .
+#   docker run --rm -p 8088:8088 hosted-invocations-echo-agent
+#
+# For end-users consuming the NuGet package (not ProjectReference), use the standard
+# Dockerfile which performs a full dotnet restore + publish inside the container.
+FROM mcr.microsoft.com/dotnet/aspnet:10.0-alpine AS final
+WORKDIR /app
+COPY out/ .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedInvocationsEchoAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/EchoAIAgent.cs

@@ -0,0 +1,85 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Runtime.CompilerServices;
+using System.Text.Json;
+using Microsoft.Extensions.AI;
+
+namespace Microsoft.Agents.AI;
+
+/// <summary>
+/// A minimal <see cref="AIAgent"/> that echoes the user's input text back as the response.
+/// No LLM or external service is required.
+/// </summary>
+public sealed class EchoAIAgent : AIAgent
+{
+    /// <inheritdoc/>
+    public override string Name => "echo-agent";
+
+    /// <inheritdoc/>
+    public override string Description => "An agent that echoes back the input message.";
+
+    /// <inheritdoc/>
+    protected override Task<AgentResponse> RunCoreAsync(
+        IEnumerable<ChatMessage> messages,
+        AgentSession? session = null,
+        AgentRunOptions? options = null,
+        CancellationToken cancellationToken = default)
+    {
+        var inputText = GetInputText(messages);
+        var response = new AgentResponse(new ChatMessage(ChatRole.Assistant, $"Echo: {inputText}"));
+        return Task.FromResult(response);
+    }
+
+    /// <inheritdoc/>
+    protected override async IAsyncEnumerable<AgentResponseUpdate> RunCoreStreamingAsync(
+        IEnumerable<ChatMessage> messages,
+        AgentSession? session = null,
+        AgentRunOptions? options = null,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        var inputText = GetInputText(messages);
+        yield return new AgentResponseUpdate
+        {
+            Role = ChatRole.Assistant,
+            Contents = [new TextContent($"Echo: {inputText}")],
+        };
+
+        await Task.CompletedTask;
+    }
+
+    /// <inheritdoc/>
+    protected override ValueTask<AgentSession> CreateSessionCoreAsync(CancellationToken cancellationToken = default)
+        => new(new EchoAgentSession());
+
+    /// <inheritdoc/>
+    protected override ValueTask<JsonElement> SerializeSessionCoreAsync(
+        AgentSession session,
+        JsonSerializerOptions? jsonSerializerOptions = null,
+        CancellationToken cancellationToken = default)
+        => new(JsonSerializer.SerializeToElement(new { }, jsonSerializerOptions));
+
+    /// <inheritdoc/>
+    protected override ValueTask<AgentSession> DeserializeSessionCoreAsync(
+        JsonElement serializedState,
+        JsonSerializerOptions? jsonSerializerOptions = null,
+        CancellationToken cancellationToken = default)
+        => new(new EchoAgentSession());
+
+    private static string GetInputText(IEnumerable<ChatMessage> messages)
+    {
+        foreach (var message in messages)
+        {
+            if (message.Role == ChatRole.User)
+            {
+                return message.Text ?? string.Empty;
+            }
+        }
+
+        return string.Empty;
+    }
+
+    /// <summary>
+    /// Minimal session for the echo agent. No state is persisted.
+    /// </summary>
+    private sealed class EchoAgentSession : AgentSession;
+}

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/EchoInvocationHandler.cs

@@ -0,0 +1,32 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure.AI.AgentServer.Invocations;
+using Microsoft.Agents.AI;
+
+namespace HostedInvocationsEchoAgent;
+
+/// <summary>
+/// An <see cref="InvocationHandler"/> that reads the request body as plain text,
+/// passes it to the <see cref="EchoAIAgent"/>, and writes the response back.
+/// </summary>
+public sealed class EchoInvocationHandler(EchoAIAgent agent) : InvocationHandler
+{
+    /// <inheritdoc/>
+    public override async Task HandleAsync(
+        HttpRequest request,
+        HttpResponse response,
+        InvocationContext context,
+        CancellationToken cancellationToken)
+    {
+        // Read the raw text from the request body.
+        using var reader = new StreamReader(request.Body);
+        var input = await reader.ReadToEndAsync(cancellationToken);
+
+        // Run the echo agent with the input text.
+        var agentResponse = await agent.RunAsync(input, cancellationToken: cancellationToken);
+
+        // Write the agent response text back to the HTTP response.
+        response.ContentType = "text/plain";
+        await response.WriteAsync(agentResponse.Text, cancellationToken);
+    }
+}

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/Hosted-Invocations-EchoAgent.csproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <CentralPackageTransitivePinningEnabled>false</CentralPackageTransitivePinningEnabled>
+    <RootNamespace>HostedInvocationsEchoAgent</RootNamespace>
+    <AssemblyName>HostedInvocationsEchoAgent</AssemblyName>
+    <NoWarn>$(NoWarn);</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Azure.AI.AgentServer.Invocations" />
+    <PackageReference Include="DotNetEnv" />
+    <PackageReference Include="OpenTelemetry.Api" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" />
+  </ItemGroup>
+
+  <!-- For contributors: uses ProjectReference to build against local source -->
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\src\Microsoft.Agents.AI.Abstractions\Microsoft.Agents.AI.Abstractions.csproj" />
+  </ItemGroup>
+
+  <!-- For end-users: uncomment the PackageReference below and remove the ProjectReference above
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Agents.AI.Abstractions" Version="1.0.0" />
+    <PackageReference Include="Azure.AI.AgentServer.Invocations" />
+  </ItemGroup>
+  -->
+
+</Project>

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/Program.cs

@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure.AI.AgentServer.Invocations;
+using DotNetEnv;
+using HostedInvocationsEchoAgent;
+using Microsoft.Agents.AI;
+
+// Load .env file if present (for local development)
+Env.TraversePath().Load();
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Register the echo agent as a singleton (no LLM needed).
+builder.Services.AddSingleton<EchoAIAgent>();
+
+// Register the Invocations SDK services and wire the handler.
+builder.Services.AddInvocationsServer();
+builder.Services.AddScoped<InvocationHandler, EchoInvocationHandler>();
+
+var app = builder.Build();
+
+// Map the Invocations protocol endpoints:
+//   POST /invocations              — invoke the agent
+//   GET  /invocations/{id}         — get result (not used by this sample)
+//   POST /invocations/{id}/cancel  — cancel (not used by this sample)
+app.MapInvocationsServer();
+
+app.Run();

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/README.md

@@ -0,0 +1,76 @@
+# Hosted-Invocations-EchoAgent
+
+A minimal echo agent hosted as a Foundry Hosted Agent using the **Invocations protocol**. The agent reads the request body as plain text, passes it through a custom `EchoAIAgent`, and writes the echoed text back in the response. No LLM or Azure credentials are required.
+
+## Prerequisites
+
+- [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
+
+## Configuration
+
+Copy the template:
+
+```bash
+cp .env.example .env
+```
+
+> **Note:** `.env` is gitignored. The `.env.example` template is checked in as a reference.
+
+## Running directly (contributors)
+
+This project uses `ProjectReference` to build against the local Agent Framework source.
+
+```bash
+cd dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent
+dotnet run
+```
+
+The agent will start on `http://localhost:8088`.
+
+### Test it
+
+```bash
+curl -X POST http://localhost:8088/invocations \
+  -H "Content-Type: text/plain" \
+  -d "Hello, world!"
+```
+
+Expected response:
+
+```
+Echo: Hello, world!
+```
+
+## Running with Docker
+
+Since this project uses `ProjectReference`, the standard `Dockerfile` cannot resolve dependencies outside this folder. Use `Dockerfile.contributor` which takes a pre-published output.
+
+### 1. Publish for the container runtime (Linux Alpine)
+
+```bash
+dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+```
+
+### 2. Build the Docker image
+
+```bash
+docker build -f Dockerfile.contributor -t hosted-invocations-echo-agent .
+```
+
+### 3. Run the container
+
+```bash
+docker run --rm -p 8088:8088 hosted-invocations-echo-agent
+```
+
+### 4. Test it
+
+```bash
+curl -X POST http://localhost:8088/invocations \
+  -H "Content-Type: text/plain" \
+  -d "Hello from Docker!"
+```
+
+## NuGet package users
+
+If you are consuming the Agent Framework as a NuGet package (not building from source), use the standard `Dockerfile` instead of `Dockerfile.contributor`. See the commented section in `Hosted-Invocations-EchoAgent.csproj` for the `PackageReference` alternative.

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/agent.manifest.yaml

@@ -0,0 +1,27 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/microsoft/AgentSchema/refs/heads/main/schemas/v1.0/AgentManifest.yaml
+name: hosted-invocations-echo-agent
+displayName: "Hosted Invocations Echo Agent"
+
+description: >
+  A minimal echo agent hosted as a Foundry Hosted Agent using the Invocations
+  protocol. Reads the request body as plain text, echoes it back in the response.
+
+metadata:
+  tags:
+    - AI Agent Hosting
+    - Azure AI AgentServer
+    - Invocations Protocol
+    - Agent Framework
+
+template:
+  name: hosted-invocations-echo-agent
+  kind: hosted
+  protocols:
+    - protocol: invocations
+      version: 1.0.0
+  resources:
+    cpu: "0.25"
+    memory: 0.5Gi
+parameters:
+  properties: []
+resources: []

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Hosted-Invocations-EchoAgent/agent.yaml

@@ -0,0 +1,9 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/microsoft/AgentSchema/refs/heads/main/schemas/v1.0/ContainerAgent.yaml
+kind: hosted
+name: hosted-invocations-echo-agent
+protocols:
+  - protocol: invocations
+    version: 1.0.0
+resources:
+  cpu: "0.25"
+  memory: 0.5Gi

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Using-Samples/SimpleInvocationsAgent/InvocationsAIAgent.cs

@@ -0,0 +1,129 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Runtime.CompilerServices;
+using System.Text.Json;
+using Microsoft.Extensions.AI;
+
+namespace Microsoft.Agents.AI;
+
+/// <summary>
+/// An <see cref="AIAgent"/> that invokes a remote agent hosted with the Invocations protocol
+/// by sending plain-text HTTP POST requests to the <c>/invocations</c> endpoint.
+/// </summary>
+public sealed class InvocationsAIAgent : AIAgent
+{
+    private readonly HttpClient _httpClient;
+    private readonly Uri _invocationsUri;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="InvocationsAIAgent"/> class.
+    /// </summary>
+    /// <param name="agentEndpoint">
+    /// The base URI of the hosted agent (e.g., <c>http://localhost:8089</c>).
+    /// The <c>/invocations</c> path is appended automatically.
+    /// </param>
+    /// <param name="httpClient">Optional <see cref="HttpClient"/> to use. If <see langword="null"/>, a new instance is created.</param>
+    /// <param name="name">Optional name for the agent.</param>
+    /// <param name="description">Optional description for the agent.</param>
+    public InvocationsAIAgent(
+        Uri agentEndpoint,
+        HttpClient? httpClient = null,
+        string? name = null,
+        string? description = null)
+    {
+        ArgumentNullException.ThrowIfNull(agentEndpoint);
+
+        this._httpClient = httpClient ?? new HttpClient();
+
+        // Ensure the base URI ends with a slash so that combining works correctly.
+        var baseUri = agentEndpoint.AbsoluteUri.EndsWith('/')
+            ? agentEndpoint
+            : new Uri(agentEndpoint.AbsoluteUri + "/");
+        this._invocationsUri = new Uri(baseUri, "invocations");
+
+        this.Name = name ?? "invocations-agent";
+        this.Description = description ?? "An agent that calls a remote Invocations protocol endpoint.";
+    }
+
+    /// <inheritdoc/>
+    public override string? Name { get; }
+
+    /// <inheritdoc/>
+    public override string? Description { get; }
+
+    /// <inheritdoc/>
+    protected override async Task<AgentResponse> RunCoreAsync(
+        IEnumerable<ChatMessage> messages,
+        AgentSession? session = null,
+        AgentRunOptions? options = null,
+        CancellationToken cancellationToken = default)
+    {
+        var inputText = GetLastUserText(messages);
+        var responseText = await this.SendInvocationAsync(inputText, cancellationToken).ConfigureAwait(false);
+        return new AgentResponse(new ChatMessage(ChatRole.Assistant, responseText));
+    }
+
+    /// <inheritdoc/>
+    protected override async IAsyncEnumerable<AgentResponseUpdate> RunCoreStreamingAsync(
+        IEnumerable<ChatMessage> messages,
+        AgentSession? session = null,
+        AgentRunOptions? options = null,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        // The Invocations protocol returns a complete response (no SSE streaming),
+        // so we yield a single update with the full text.
+        var inputText = GetLastUserText(messages);
+        var responseText = await this.SendInvocationAsync(inputText, cancellationToken).ConfigureAwait(false);
+
+        yield return new AgentResponseUpdate
+        {
+            Role = ChatRole.Assistant,
+            Contents = [new TextContent(responseText)],
+        };
+    }
+
+    /// <inheritdoc/>
+    protected override ValueTask<AgentSession> CreateSessionCoreAsync(CancellationToken cancellationToken = default)
+        => new(new InvocationsAgentSession());
+
+    /// <inheritdoc/>
+    protected override ValueTask<JsonElement> SerializeSessionCoreAsync(
+        AgentSession session,
+        JsonSerializerOptions? jsonSerializerOptions = null,
+        CancellationToken cancellationToken = default)
+        => new(JsonSerializer.SerializeToElement(new { }, jsonSerializerOptions));
+
+    /// <inheritdoc/>
+    protected override ValueTask<AgentSession> DeserializeSessionCoreAsync(
+        JsonElement serializedState,
+        JsonSerializerOptions? jsonSerializerOptions = null,
+        CancellationToken cancellationToken = default)
+        => new(new InvocationsAgentSession());
+
+    private async Task<string> SendInvocationAsync(string input, CancellationToken cancellationToken)
+    {
+        using var content = new StringContent(input, System.Text.Encoding.UTF8, "text/plain");
+        using var response = await this._httpClient.PostAsync(this._invocationsUri, content, cancellationToken).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+        return await response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
+    }
+
+    private static string GetLastUserText(IEnumerable<ChatMessage> messages)
+    {
+        string? lastUserText = null;
+        foreach (var message in messages)
+        {
+            if (message.Role == ChatRole.User)
+            {
+                lastUserText = message.Text;
+            }
+        }
+
+        return lastUserText ?? string.Empty;
+    }
+
+    /// <summary>
+    /// Minimal session for the invocations agent. No state is persisted.
+    /// </summary>
+    private sealed class InvocationsAgentSession : AgentSession;
+}

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Using-Samples/SimpleInvocationsAgent/Program.cs

@@ -0,0 +1,61 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using DotNetEnv;
+using Microsoft.Agents.AI;
+
+// Load .env file if present (for local development)
+Env.TraversePath().Load();
+
+Uri agentEndpoint = new(Environment.GetEnvironmentVariable("AGENT_ENDPOINT")
+    ?? "http://localhost:8088");
+
+// Create an agent that calls the remote Invocations endpoint.
+InvocationsAIAgent agent = new(agentEndpoint);
+
+// REPL
+Console.ForegroundColor = ConsoleColor.Cyan;
+Console.WriteLine($"""
+    ══════════════════════════════════════════════════════════
+    Simple Invocations Agent Sample
+    Connected to: {agentEndpoint}
+    Type a message or 'quit' to exit
+    ══════════════════════════════════════════════════════════
+    """);
+Console.ResetColor();
+Console.WriteLine();
+
+while (true)
+{
+    Console.ForegroundColor = ConsoleColor.Green;
+    Console.Write("You> ");
+    Console.ResetColor();
+
+    string? input = Console.ReadLine();
+
+    if (string.IsNullOrWhiteSpace(input)) { continue; }
+    if (input.Equals("quit", StringComparison.OrdinalIgnoreCase)) { break; }
+
+    try
+    {
+        Console.ForegroundColor = ConsoleColor.Yellow;
+        Console.Write("Agent> ");
+        Console.ResetColor();
+
+        await foreach (var update in agent.RunStreamingAsync(input))
+        {
+            Console.Write(update);
+        }
+
+        Console.WriteLine();
+    }
+    catch (Exception ex)
+    {
+        Console.ForegroundColor = ConsoleColor.Red;
+        Console.WriteLine($"Error: {ex.Message}");
+        Console.ResetColor();
+    }
+
+    Console.WriteLine();
+}
+
+Console.WriteLine("Goodbye!");

dotnet/samples/04-hosting/FoundryHostedAgents/invocations/Using-Samples/SimpleInvocationsAgent/SimpleInvocationsAgent.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <CentralPackageTransitivePinningEnabled>false</CentralPackageTransitivePinningEnabled>
+    <RootNamespace>SimpleInvocationsAgentClient</RootNamespace>
+    <AssemblyName>simple-invocations-agent-client</AssemblyName>
+    <NoWarn>$(NoWarn);NU1605</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DotNetEnv" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\..\src\Microsoft.Agents.AI.Abstractions\Microsoft.Agents.AI.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/.env.example

@@ -0,0 +1,6 @@
+AZURE_AI_PROJECT_ENDPOINT=<your-azure-ai-project-endpoint>
+ASPNETCORE_URLS=http://+:8088
+ASPNETCORE_ENVIRONMENT=Development
+AZURE_AI_MODEL_DEPLOYMENT_NAME=gpt-4o
+AGENT_NAME=hosted-chat-client-agent
+AZURE_BEARER_TOKEN=DefaultAzureCredential

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/Dockerfile

@@ -0,0 +1,17 @@
+# Use the official .NET 10.0 ASP.NET runtime as a parent image
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+COPY . .
+RUN dotnet restore
+RUN dotnet publish -c Release -o /app/publish
+
+# Final stage
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedChatClientAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/Dockerfile.contributor

@@ -0,0 +1,19 @@
+# Dockerfile for contributors building from the agent-framework repository source.
+#
+# This project uses ProjectReference to the local Microsoft.Agents.AI.Foundry source,
+# which means a standard multi-stage Docker build cannot resolve dependencies outside
+# this folder. Instead, pre-publish the app targeting the container runtime and copy
+# the output into the container:
+#
+#   dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+#   docker build -f Dockerfile.contributor -t hosted-chat-client-agent .
+#   docker run --rm -p 8088:8088 -e AGENT_NAME=hosted-chat-client-agent --env-file .env hosted-chat-client-agent
+#
+# For end-users consuming the NuGet package (not ProjectReference), use the standard
+# Dockerfile which performs a full dotnet restore + publish inside the container.
+FROM mcr.microsoft.com/dotnet/aspnet:10.0-alpine AS final
+WORKDIR /app
+COPY out/ .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedChatClientAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/HostedChatClientAgent.csproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <CentralPackageTransitivePinningEnabled>false</CentralPackageTransitivePinningEnabled>
+    <RootNamespace>HostedChatClientAgent</RootNamespace>
+    <AssemblyName>HostedChatClientAgent</AssemblyName>
+    <NoWarn>$(NoWarn);</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DotNetEnv" />
+  </ItemGroup>
+
+  <!-- For contributors: uses ProjectReference to build against local source -->
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\src\Microsoft.Agents.AI.Foundry\Microsoft.Agents.AI.Foundry.csproj" />
+    <ProjectReference Include="..\..\..\..\..\src\Microsoft.Agents.AI.Foundry.Hosting\Microsoft.Agents.AI.Foundry.Hosting.csproj" />
+  </ItemGroup>
+
+  <!-- For end-users: uncomment the PackageReference below and remove the ProjectReference above
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Agents.AI.Foundry" Version="1.0.0" />
+    <PackageReference Include="Microsoft.Agents.AI.Foundry.Hosting" Version="1.0.0" />
+    <PackageReference Include="Azure.AI.Projects" />
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+  -->
+
+</Project>

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/Program.cs

@@ -0,0 +1,98 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure.AI.Projects;
+using Azure.Core;
+using Azure.Identity;
+using DotNetEnv;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Foundry.Hosting;
+
+// Load .env file if present (for local development)
+Env.TraversePath().Load();
+
+var projectEndpoint = new Uri(Environment.GetEnvironmentVariable("AZURE_AI_PROJECT_ENDPOINT")
+    ?? throw new InvalidOperationException("AZURE_AI_PROJECT_ENDPOINT is not set."));
+
+var agentName = Environment.GetEnvironmentVariable("AGENT_NAME")
+    ?? throw new InvalidOperationException("AGENT_NAME is not set.");
+
+var deployment = Environment.GetEnvironmentVariable("AZURE_AI_MODEL_DEPLOYMENT_NAME") ?? "gpt-4o";
+
+// Use a chained credential: try a temporary dev token first (for local Docker debugging),
+// then fall back to DefaultAzureCredential (for local dev via dotnet run / managed identity running in foundry).
+TokenCredential credential = new ChainedTokenCredential(
+    new DevTemporaryTokenCredential(),
+    new DefaultAzureCredential());
+
+// Create the agent via the AI project client using the Responses API.
+AIAgent agent = new AIProjectClient(projectEndpoint, credential)
+    .AsAIAgent(
+        model: deployment,
+        instructions: """
+            You are a helpful AI assistant hosted as a Foundry Hosted Agent.
+            You can help with a wide range of tasks including answering questions,
+            providing explanations, brainstorming ideas, and offering guidance.
+            Be concise, clear, and helpful in your responses.
+            """,
+        name: agentName,
+        description: "A simple general-purpose AI assistant");
+
+// Host the agent as a Foundry Hosted Agent using the Responses API.
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddFoundryResponses(agent);
+
+var app = builder.Build();
+app.MapFoundryResponses();
+
+// In Development, also map the OpenAI-compatible route that AIProjectClient uses.
+if (app.Environment.IsDevelopment())
+{
+    app.MapFoundryResponses("openai/v1");
+}
+
+app.Run();
+
+/// <summary>
+/// A <see cref="TokenCredential"/> for local Docker debugging only.
+///
+/// When debugging and testing a hosted agent in a local Docker container, Azure CLI
+/// and other interactive credentials are not available. This credential reads a
+/// pre-fetched bearer token from the <c>AZURE_BEARER_TOKEN</c> environment variable.
+///
+/// This should NOT be used in production — tokens expire (~1 hour) and cannot be refreshed.
+/// In production, the Foundry platform injects a managed identity automatically.
+///
+/// Generate a token on your host and pass it to the container:
+///   export AZURE_BEARER_TOKEN=$(az account get-access-token --resource https://ai.azure.com --query accessToken -o tsv)
+///   docker run -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN ...
+/// </summary>
+internal sealed class DevTemporaryTokenCredential : TokenCredential
+{
+    private const string EnvironmentVariable = "AZURE_BEARER_TOKEN";
+    private readonly string? _token;
+
+    public DevTemporaryTokenCredential()
+    {
+        this._token = Environment.GetEnvironmentVariable(EnvironmentVariable);
+    }
+
+    public override AccessToken GetToken(TokenRequestContext requestContext, CancellationToken cancellationToken)
+    {
+        return this.GetAccessToken();
+    }
+
+    public override ValueTask<AccessToken> GetTokenAsync(TokenRequestContext requestContext, CancellationToken cancellationToken)
+    {
+        return new ValueTask<AccessToken>(this.GetAccessToken());
+    }
+
+    private AccessToken GetAccessToken()
+    {
+        if (string.IsNullOrEmpty(this._token) || this._token == "DefaultAzureCredential")
+        {
+            throw new CredentialUnavailableException($"{EnvironmentVariable} environment variable is not set.");
+        }
+
+        return new AccessToken(this._token, DateTimeOffset.UtcNow.AddHours(1));
+    }
+}

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/README.md

@@ -0,0 +1,109 @@
+# Hosted-ChatClientAgent
+
+A simple general-purpose AI assistant hosted as a Foundry Hosted Agent using the Agent Framework instance hosting pattern. The agent is created inline via `AIProjectClient.AsAIAgent(model, instructions)` and served using the Responses protocol.
+
+## Prerequisites
+
+- [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
+- An Azure AI Foundry project with a deployed model (e.g., `gpt-4o`)
+- Azure CLI logged in (`az login`)
+
+## Configuration
+
+Copy the template and fill in your project endpoint:
+
+```bash
+cp .env.example .env
+```
+
+Edit `.env` and set your Azure AI Foundry project endpoint:
+
+```env
+AZURE_AI_PROJECT_ENDPOINT=https://<your-account>.services.ai.azure.com/api/projects/<your-project>
+ASPNETCORE_URLS=http://+:8088
+ASPNETCORE_ENVIRONMENT=Development
+AZURE_AI_MODEL_DEPLOYMENT_NAME=gpt-4o
+```
+
+> **Note:** `.env` is gitignored. The `.env.example` template is checked in as a reference.
+
+## Running directly (contributors)
+
+This project uses `ProjectReference` to build against the local Agent Framework source.
+
+```bash
+cd dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent
+dotnet run
+```
+
+The agent will start on `http://localhost:8088`.
+
+### Test it
+
+Using the Azure Developer CLI:
+
+```bash
+azd ai agent invoke --local "Hello!"
+```
+
+Or with curl (specifying the agent name explicitly):
+
+```bash
+curl -X POST http://localhost:8088/responses \
+  -H "Content-Type: application/json" \
+  -d '{"input": "Hello!", "model": "hosted-chat-client-agent"}'
+```
+
+## Running with Docker
+
+Since this project uses `ProjectReference`, the standard `Dockerfile` cannot resolve dependencies outside this folder. Use `Dockerfile.contributor` which takes a pre-published output.
+
+### 1. Publish for the container runtime (Linux Alpine)
+
+```bash
+dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+```
+
+### 2. Build the Docker image
+
+```bash
+docker build -f Dockerfile.contributor -t hosted-chat-client-agent .
+```
+
+### 3. Run the container
+
+Generate a bearer token on your host and pass it to the container:
+
+```bash
+# Generate token (expires in ~1 hour)
+export AZURE_BEARER_TOKEN=$(az account get-access-token --resource https://ai.azure.com --query accessToken -o tsv)
+
+# Run with token
+docker run --rm -p 8088:8088 \
+  -e AGENT_NAME=hosted-chat-client-agent \
+  -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN \
+  --env-file .env \
+  hosted-chat-client-agent
+```
+
+> **Note:** `AGENT_NAME` is passed via `-e` to simulate the platform injection. `AZURE_BEARER_TOKEN` provides Azure credentials to the container (tokens expire after ~1 hour). The `.env` file provides the remaining configuration.
+
+### 4. Test it
+
+Using the Azure Developer CLI:
+
+```bash
+azd ai agent invoke --local "Hello!"
+```
+
+Or with curl (specifying the agent name explicitly):
+
+```bash
+curl -X POST http://localhost:8088/responses \
+  -H "Content-Type: application/json" \
+  -d '{"input": "Hello!", "model": "hosted-chat-client-agent"}'
+```
+
+## NuGet package users
+
+If you are consuming the Agent Framework as a NuGet package (not building from source), use the standard `Dockerfile` instead of `Dockerfile.contributor` — it performs a full `dotnet restore` and `dotnet publish` inside the container. See the commented section in `HostedChatClientAgent.csproj` for the `PackageReference` alternative.

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/agent.manifest.yaml

@@ -0,0 +1,28 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/microsoft/AgentSchema/refs/heads/main/schemas/v1.0/AgentManifest.yaml
+name: hosted-chat-client-agent
+displayName: "Hosted Chat Client Agent"
+
+description: >
+  A simple general-purpose AI assistant hosted as a Foundry Hosted Agent
+  using the Agent Framework instance hosting pattern.
+
+metadata:
+  tags:
+    - AI Agent Hosting
+    - Azure AI AgentServer
+    - Responses Protocol
+    - Streaming
+    - Agent Framework
+
+template:
+  name: hosted-chat-client-agent
+  kind: hosted
+  protocols:
+    - protocol: responses
+      version: 1.0.0
+  resources:
+    cpu: "0.25"
+    memory: 0.5Gi
+parameters:
+  properties: []
+resources: []

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-ChatClientAgent/agent.yaml

@@ -0,0 +1,9 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/microsoft/AgentSchema/refs/heads/main/schemas/v1.0/ContainerAgent.yaml
+kind: hosted
+name: hosted-chat-client-agent
+protocols:
+  - protocol: responses
+    version: 1.0.0
+resources:
+  cpu: "0.25"
+  memory: 0.5Gi

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/.env.example

@@ -0,0 +1,5 @@
+AZURE_AI_PROJECT_ENDPOINT=<your-azure-ai-project-endpoint>
+ASPNETCORE_URLS=http://+:8088
+ASPNETCORE_ENVIRONMENT=Development
+AGENT_NAME=<your-foundry-agent-name>
+AZURE_BEARER_TOKEN=DefaultAzureCredential

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/Dockerfile

@@ -0,0 +1,17 @@
+# Use the official .NET 10.0 ASP.NET runtime as a parent image
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+COPY . .
+RUN dotnet restore
+RUN dotnet publish -c Release -o /app/publish
+
+# Final stage
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedFoundryAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/Dockerfile.contributor

@@ -0,0 +1,19 @@
+# Dockerfile for contributors building from the agent-framework repository source.
+#
+# This project uses ProjectReference to the local Microsoft.Agents.AI.Foundry source,
+# which means a standard multi-stage Docker build cannot resolve dependencies outside
+# this folder. Instead, pre-publish the app targeting the container runtime and copy
+# the output into the container:
+#
+#   dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+#   docker build -f Dockerfile.contributor -t hosted-foundry-agent .
+#   docker run --rm -p 8088:8088 -e AGENT_NAME=<your-agent> -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN --env-file .env hosted-foundry-agent
+#
+# For end-users consuming the NuGet package (not ProjectReference), use the standard
+# Dockerfile which performs a full dotnet restore + publish inside the container.
+FROM mcr.microsoft.com/dotnet/aspnet:10.0-alpine AS final
+WORKDIR /app
+COPY out/ .
+EXPOSE 8088
+ENV ASPNETCORE_URLS=http://+:8088
+ENTRYPOINT ["dotnet", "HostedFoundryAgent.dll"]

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/HostedFoundryAgent.csproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <CentralPackageTransitivePinningEnabled>false</CentralPackageTransitivePinningEnabled>
+    <RootNamespace>HostedFoundryAgent</RootNamespace>
+    <AssemblyName>HostedFoundryAgent</AssemblyName>
+    <NoWarn>$(NoWarn);</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DotNetEnv" />
+  </ItemGroup>
+
+  <!-- For contributors: uses ProjectReference to build against local source -->
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\src\Microsoft.Agents.AI.Foundry\Microsoft.Agents.AI.Foundry.csproj" />
+    <ProjectReference Include="..\..\..\..\..\src\Microsoft.Agents.AI.Foundry.Hosting\Microsoft.Agents.AI.Foundry.Hosting.csproj" />
+  </ItemGroup>
+
+  <!-- For end-users: uncomment the PackageReference below and remove the ProjectReference above
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Agents.AI.Foundry" Version="1.0.0" />
+    <PackageReference Include="Microsoft.Agents.AI.Foundry.Hosting" Version="1.0.0" />
+    <PackageReference Include="Azure.AI.Projects" />
+    <PackageReference Include="Azure.Identity" />
+  </ItemGroup>
+  -->
+
+</Project>

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/Program.cs

@@ -0,0 +1,91 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure.AI.Projects;
+using Azure.AI.Projects.Agents;
+using Azure.Core;
+using Azure.Identity;
+using DotNetEnv;
+using Microsoft.Agents.AI.Foundry;
+using Microsoft.Agents.AI.Foundry.Hosting;
+
+// Load .env file if present (for local development)
+Env.TraversePath().Load();
+
+var projectEndpoint = new Uri(Environment.GetEnvironmentVariable("AZURE_AI_PROJECT_ENDPOINT")
+    ?? throw new InvalidOperationException("AZURE_AI_PROJECT_ENDPOINT is not set."));
+var agentName = Environment.GetEnvironmentVariable("AGENT_NAME")
+    ?? throw new InvalidOperationException("AGENT_NAME is not set.");
+
+// Use a chained credential: try a temporary dev token first (for local Docker debugging),
+// then fall back to DefaultAzureCredential (for local dev via dotnet run / managed identity running in foundry).
+TokenCredential credential = new ChainedTokenCredential(
+    new DevTemporaryTokenCredential(),
+    new DefaultAzureCredential());
+
+var aiProjectClient = new AIProjectClient(projectEndpoint, credential);
+
+// Retrieve the Foundry-managed agent by name (latest version).
+ProjectsAgentRecord agentRecord = await aiProjectClient
+    .AgentAdministrationClient.GetAgentAsync(agentName);
+
+FoundryAgent agent = aiProjectClient.AsAIAgent(agentRecord);
+
+// Host the agent as a Foundry Hosted Agent using the Responses API.
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddFoundryResponses(agent);
+
+var app = builder.Build();
+app.MapFoundryResponses();
+
+// In Development, also map the OpenAI-compatible route that AIProjectClient uses.
+if (app.Environment.IsDevelopment())
+{
+    app.MapFoundryResponses("openai/v1");
+}
+
+app.Run();
+
+/// <summary>
+/// A <see cref="TokenCredential"/> for local Docker debugging only.
+///
+/// When debugging and testing a hosted agent in a local Docker container, Azure CLI
+/// and other interactive credentials are not available. This credential reads a
+/// pre-fetched bearer token from the <c>AZURE_BEARER_TOKEN</c> environment variable.
+///
+/// This should NOT be used in production — tokens expire (~1 hour) and cannot be refreshed.
+/// In production, the Foundry platform injects a managed identity automatically.
+///
+/// Generate a token on your host and pass it to the container:
+///   export AZURE_BEARER_TOKEN=$(az account get-access-token --resource https://ai.azure.com --query accessToken -o tsv)
+///   docker run -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN ...
+/// </summary>
+internal sealed class DevTemporaryTokenCredential : TokenCredential
+{
+    private const string EnvironmentVariable = "AZURE_BEARER_TOKEN";
+    private readonly string? _token;
+
+    public DevTemporaryTokenCredential()
+    {
+        this._token = Environment.GetEnvironmentVariable(EnvironmentVariable);
+    }
+
+    public override AccessToken GetToken(TokenRequestContext requestContext, CancellationToken cancellationToken)
+    {
+        return this.GetAccessToken();
+    }
+
+    public override ValueTask<AccessToken> GetTokenAsync(TokenRequestContext requestContext, CancellationToken cancellationToken)
+    {
+        return new ValueTask<AccessToken>(this.GetAccessToken());
+    }
+
+    private AccessToken GetAccessToken()
+    {
+        if (string.IsNullOrEmpty(this._token) || this._token == "DefaultAzureCredential")
+        {
+            throw new CredentialUnavailableException($"{EnvironmentVariable} environment variable is not set.");
+        }
+
+        return new AccessToken(this._token, DateTimeOffset.UtcNow.AddHours(1));
+    }
+}

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/README.md

@@ -0,0 +1,121 @@
+# Hosted-FoundryAgent
+
+A hosted agent that delegates to a **Foundry-managed agent definition**. Instead of defining the model, instructions, and tools inline in code, this sample retrieves an existing agent registered in the Foundry platform via `AIProjectClient.AsAIAgent(agentRecord)` and hosts it using the Responses protocol.
+
+This is the **Foundry hosting** pattern — the agent's behavior is configured in the platform (via Foundry UI, CLI, or API), and this server simply wraps and serves it.
+
+## Prerequisites
+
+- [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
+- An Azure AI Foundry project with a **registered agent** (created via Foundry UI, CLI, or API)
+- Azure CLI logged in (`az login`)
+
+## Configuration
+
+Copy the template and fill in your project endpoint:
+
+```bash
+cp .env.example .env
+```
+
+Edit `.env` and set your Azure AI Foundry project endpoint:
+
+```env
+AZURE_AI_PROJECT_ENDPOINT=https://<your-account>.services.ai.azure.com/api/projects/<your-project>
+ASPNETCORE_URLS=http://+:8088
+ASPNETCORE_ENVIRONMENT=Development
+```
+
+> **Note:** `.env` is gitignored. The `.env.example` template is checked in as a reference.
+
+You also need to set `AGENT_NAME` — the name of the Foundry-managed agent to host. This is injected automatically by the Foundry platform when deployed. For local development, pass it as an environment variable.
+
+## Running directly (contributors)
+
+This project uses `ProjectReference` to build against the local Agent Framework source.
+
+```bash
+cd dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent
+AGENT_NAME=<your-agent-name> dotnet run
+```
+
+The agent will start on `http://localhost:8088`.
+
+### Test it
+
+Using the Azure Developer CLI:
+
+```bash
+azd ai agent invoke --local "Hello!"
+```
+
+Or with curl (specifying the agent name explicitly):
+
+```bash
+curl -X POST http://localhost:8088/responses \
+  -H "Content-Type: application/json" \
+  -d '{"input": "Hello!", "model": "<your-agent-name>"}'
+```
+
+## Running with Docker
+
+Since this project uses `ProjectReference`, the standard `Dockerfile` cannot resolve dependencies outside this folder. Use `Dockerfile.contributor` which takes a pre-published output.
+
+### 1. Publish for the container runtime (Linux Alpine)
+
+```bash
+dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
+```
+
+### 2. Build the Docker image
+
+```bash
+docker build -f Dockerfile.contributor -t hosted-foundry-agent .
+```
+
+### 3. Run the container
+
+Generate a bearer token on your host and pass it to the container:
+
+```bash
+# Generate token (expires in ~1 hour)
+export AZURE_BEARER_TOKEN=$(az account get-access-token --resource https://ai.azure.com --query accessToken -o tsv)
+
+# Run with token
+docker run --rm -p 8088:8088 \
+  -e AGENT_NAME=<your-agent-name> \
+  -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN \
+  --env-file .env \
+  hosted-foundry-agent
+```
+
+> **Note:** `AGENT_NAME` is passed via `-e` to simulate the platform injection. `AZURE_BEARER_TOKEN` provides Azure credentials to the container (tokens expire after ~1 hour). The `.env` file provides the remaining configuration.
+
+### 4. Test it
+
+Using the Azure Developer CLI:
+
+```bash
+azd ai agent invoke --local "Hello!"
+```
+
+Or with curl (specifying the agent name explicitly):
+
+```bash
+curl -X POST http://localhost:8088/responses \
+  -H "Content-Type: application/json" \
+  -d '{"input": "Hello!", "model": "<your-agent-name>"}'
+```
+
+## NuGet package users
+
+If you are consuming the Agent Framework as a NuGet package (not building from source), use the standard `Dockerfile` instead of `Dockerfile.contributor` — it performs a full `dotnet restore` and `dotnet publish` inside the container. See the commented section in `HostedFoundryAgent.csproj` for the `PackageReference` alternative.
+
+## How it differs from Hosted-ChatClientAgent
+
+| | Hosted-ChatClientAgent | Hosted-FoundryAgent |
+|---|---|---|
+| **Agent definition** | Inline in code (`AsAIAgent(model, instructions)`) | Managed in Foundry platform (`AsAIAgent(agentRecord)`) |
+| **Model/instructions** | Set in `Program.cs` | Set in Foundry UI/CLI/API |
+| **Tools** | Defined in code | Configured in the platform |
+| **Use case** | Full control over agent behavior | Platform-managed agent with centralized config |

dotnet/samples/04-hosting/FoundryHostedAgents/responses/Hosted-FoundryAgent/agent.manifest.yaml

@@ -0,0 +1,28 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/microsoft/AgentSchema/refs/heads/main/schemas/v1.0/AgentManifest.yaml
+name: hosted-foundry-agent
+displayName: "Hosted Foundry Agent"
+
+description: >
+  A simple general-purpose AI assistant hosted as a Foundry Hosted Agent,
+  backed by a Foundry-managed agent definition.
+
+metadata:
+  tags:
+    - AI Agent Hosting
+    - Azure AI AgentServer
+    - Responses Protocol
+    - Streaming
+    - Agent Framework
+
+template:
+  name: hosted-foundry-agent
+  kind: hosted
+  protocols:
+    - protocol: responses
+      version: 1.0.0
+  resources:
+    cpu: "0.25"
+    memory: 0.5Gi
+parameters:
+  properties: []
+resources: []