Commit Graph

120 Commits

  • .NET: [BREAKING] Align FileAccess tools with Python; add directory discovery and recursive search (#6474)
    * Align FileAccess with python and improve functionality
    
    * Addressing PR comments
  • .NET: Add LoopAgent capability for Harnesses (#6384)
    * Add LoopAgent capability for Harnesses
    
    * Address PR comments.
    
    * Add support for returning user messages and response aggregation
    
    * Support fresh context per iteration with input sessions via cloning
    
    * Add ability to receive newly created sessions via callback
    
    * Address PR comments
    
    * Add judge criteria
    
    * Address PR comments
  • .NET: Add Reasoning to ChatClientAgent ChatOptions merging (#5463)
    * Add reasoning option to request chat options in ChatClientAgent
    
    * Add tests for ChatOptions reasoning merging in ChatClientAgent
    
    ---------
    
    Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  • .NET: [BREAKING] Add auto-approval rules (heuristics) to ToolApprovalAgent (#6335)
    * Add support for approving tools via heuristic rules
    
    * Address PR comments
    
    * Address PR comments
    
    * Apply suggestion from @SergeyMenshykh
    
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  • .NET: Allow storage of auto-approved functions (#4950)
    * Allow storage of auto-approved functions
    
    * Address PR comments
  • .NET: Restructure skill script schemas XML and remove resources from body (#6343)
    * Restore UTF-8 BOMs and fix BuildScriptSchemasBlock doc comment
    
    - Restore UTF-8 BOM on all changed files to match repo convention
    - Fix XML doc: <schema name=...> -> <schema script=...> to match emitted output
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR review comments: fix doc remarks and rename tests
    
    - Update script doc remarks to clarify only parameter schemas are included
    - Fix grammar: 'arguments format' -> 'argument format'
    - Rename misleading test methods to match actual assertions
    - Clarify comment about removed wrapper element
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: SergeyMenshykh <SergeMenshikh@outlook.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: [Breaking] Refactor AgentFileSkillsSource for depth-based discovery and predicate filters (#6109)
    * Refactor AgentFileSkillsSource to use filter predicates and add AgentFileSkillFilterContext
    
    - Replace hardcoded script/resource directory lists with configurable ScriptFilter and ResourceFilter predicates
    - Add AgentFileSkillFilterContext class to provide contextual file information to filter predicates
    - Replace MaxSearchDepth constant with configurable SearchDepth option
    - Update AgentFileSkillsSourceOptions with new filter and search depth properties
    - Update tests to reflect the new filtering approach
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Log '(none)' instead of empty string for missing file extensions in debug output
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: Align c# and python TodoProvider tool names (#6107)
    * Align c# and python TodoProvider tool names
    
    * Potential fix for pull request finding
    
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    
    * Address PR review: remove __slots__ and add typed schemas for tool params
    
    - Remove __slots__ from TodoItem, TodoInput, and TodoCompleteInput classes
      (not needed for low-instance-count objects and hinders dev scenarios)
    - Add _TodoAddItemSchema and _TodoCompleteItemSchema TypedDicts to provide
      proper JSON schema for todos_add and todos_complete tool parameters
    - Use typing_extensions for Python 3.10 compatibility
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: Align ModeProvider tool names and instructions (#6071)
    * Align ModeProvider tool names and instructions
    
    * Address PR comments
  • .NET: [Breaking] Refactor AgentSkill API to async resource and script lookup (#6030)
    * .NET: Refactor AgentSkill API to async resource and script lookup
    
    Replace property-based AgentSkill.Content, Resources, and Scripts with
    async-by-name lookup methods plus boolean availability flags:
    
    - Content (string getter) -> GetContentAsync(CancellationToken)
    - Resources (full list) -> HasResources + GetResourceAsync(name, ct)
    - Scripts (full list) -> HasScripts + GetScriptAsync(name, ct)
    
    This makes the API friendlier for sources like MCP where enumerating all
    resources up front is expensive or impossible, and allows skill implementations
    to fetch content lazily.
    
    Subclass changes:
    - AgentFileSkill and AgentInlineSkill implement the new async API while
      preserving content caching.
    - AgentClassSkill<TSelf> keeps virtual Resources/Scripts properties for
      reflection-based discovery and seals the new HasResources/HasScripts/
      GetResourceAsync/GetScriptAsync overrides. Its previously non-thread-safe
      lazy initialization is replaced with Lazy<T> (default thread-safety) wired
      up in a new protected constructor, so concurrent first-access from multiple
      threads is safe.
    - AgentSkillsProvider calls the new async API and exposes 
    ead_skill_resource
      / load_skill / 
    un_skill_script tools that await the per-name lookups.
    
    Includes baseline CompatibilitySuppressions.xml entries for the removed
    property getters.
    
    Tests:
    - Direct coverage for HasResources, HasScripts, GetResourceAsync, and
      GetScriptAsync on all three skill implementations (positive, missing-name,
      and no-resources/no-scripts cases).
    - Thread-safety regression test for AgentClassSkill<TSelf> that exercises
      concurrent first-access to Resources, Scripts, and GetContentAsync from
      many tasks and asserts all observers see the same cached instance.
    - Provider-level coverage for the 
    ead_skill_resource tool (invocation +
      error paths) and for the previously untested error paths of load_skill
      and 
    un_skill_script (empty names, skill/resource/script not found).
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR review comments
    
    - Move GetScriptAsync inside try/catch in RunSkillScriptAsync for error-handling parity
    - Remove dead _reflectedResources branch from AgentSkillTestExtensions
    - Fix XML docs to reference virtual Resources/Scripts properties (not sealed methods)
    - Add Async suffix to async test methods per naming convention
    - Make no-await tests synchronous to eliminate CS1998
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix formatting: add UTF-8 BOM and remove unused using
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix XML cref: Resources/Scripts are on AgentClassSkill<TSelf>
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Remove HasResources and HasScripts properties from AgentSkill
    
    Drop the virtual HasResources and HasScripts properties from AgentSkill
    and all concrete subclasses (AgentFileSkill, AgentInlineSkill,
    AgentClassSkill). AgentSkillsProvider now always includes all three
    tools (load_skill, read_skill_resource, run_skill_script) and both
    instruction blocks, since the tools already handle missing
    resources/scripts gracefully.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add blank line for readability in file-based skills sample
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix HostedAgentSkillsPatternTests for always-included tools
    
    Update assertions to expect read_skill_resource and run_skill_script
    tools are always present, matching the new behavior.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Add Hosted-AgentSkills sample with Foundry Skills integration (#6013)
    * .NET: Add Hosted-AgentSkills sample for Foundry Skills integration
    
    Add a new hosted agent sample that demonstrates how to load behavioral
    guidelines from Foundry Skills at startup using AgentSkillsProvider and
    the progressive disclosure pattern (advertise -> load on demand).
    
    The sample:
    - Downloads SKILL.md files from Foundry via ProjectAgentSkills SDK
    - Extracts ZIP archives with zip-slip protection
    - Wires skills into AgentSkillsProvider as an AIContextProvider
    - Hosts the agent via the Responses protocol
    
    Ships two Contoso Outdoors skills matching the Python sample (PR #5822):
    - support-style: tone, formatting, signature guidelines
    - escalation-policy: when and how to escalate tickets
    
    Includes convenience provisioning gated behind PROVISION_SAMPLE_SKILLS
    env var, clearly documented as NOT a production pattern.
    
    Closes #5776
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Add unit tests and integration test for Hosted-AgentSkills
    
    Unit tests (14 tests, all passing):
    - ZIP extraction with zip-slip guard (valid archive, traversal attack,
      sibling-prefix attack, directory entries)
    - Skill name validation (rejects dots, separators, traversal patterns)
    - AgentSkillsProvider with downloaded skills (advertises both skills,
      load_skill returns canary tokens, unknown skill returns error)
    
    Container integration test:
    - New 'agent-skills' scenario in the test container that creates
      Contoso Outdoors skills on disk and wires AgentSkillsProvider
    - AgentSkillsHostedAgentFixture + 4 integration tests verifying:
      - Routine questions load support-style skill (STYLE-CANARY-3318)
      - Escalation triggers load escalation-policy (ESC-CANARY-7742)
      - Skills are advertised in system prompt
      - load_skill tool is invoked via FunctionCallContent
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Add smoke test, bootstrap, and docs for agent-skills integration
    
    - Add scripts/smoke.ps1 for local Docker smoke testing: builds the
      contributor image, runs the container, verifies both skills are loaded
      via canary tokens (STYLE-CANARY-3318, ESC-CANARY-7742)
    - Add 'agent-skills' to the bootstrap script scenario list
    - Add agent-skills row to the integration test README scenarios table
    - Exclude HostedAgentSkillsPatternTests from net472 (uses net8.0+ APIs)
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Update commented-out package versions to latest across all hosted samples
    
    Update the end-user PackageReference versions (in the commented-out
    sections) from 1.0.0 to the current latest NuGet versions:
    
    - Microsoft.Agents.AI: 1.6.1
    - Microsoft.Agents.AI.Foundry: 1.6.1-preview.260514.1
    - Microsoft.Agents.AI.Foundry.Hosting: 1.6.1-preview.260514.1
    - Microsoft.Agents.AI.Hosting: 1.6.1-preview.260514.1
    - Microsoft.Agents.AI.OpenAI: 1.6.1
    - Microsoft.Agents.AI.Workflows: 1.6.1
    
    Also adds explicit versions to Hosted-Workflow-Handoff which had bare
    PackageReference entries without Version attributes.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Fix broken markdown links in Hosted-AgentSkills README
    
    Remove references to non-existent ../../README.md. Replace with
    inline instructions matching other hosted samples that don't have
    a parent README.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Use OS-appropriate string comparison in zip-slip guard
    
    Use Ordinal on Unix (case-sensitive FS) and OrdinalIgnoreCase on
    Windows to prevent case-based path bypass on Linux containers.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Require TODO finish reason and rename SubAgents to BackgroundAgents (#5902)
    * Require TODO finish reason and rename SubAgents to BackgroundAgents
    
    * Address PR comments
  • .NET: Filestore improvements (#5842)
    * Filestore improvements
    
    * Address PR comments
  • .NET: [Breaking Change] Auto-wire ChatClient with OpenTelemetryChatClient in OpenTelemetryAgent (#5750)
    * Initial plan
    
    * .NET: Auto-wire ChatClient with OpenTelemetryChatClient in OpenTelemetryAgent
    
    Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/96dd033a-0c48-4d3f-9148-324bfd436b75
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Address review: remove extension overload; honor UseProvidedChatClientAsIs; drop redundant check
    
    Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/6ac3f75d-eeb7-4811-8043-9a27511b0a8b
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Resolve ChatClientAgent via GetService before checking options/chat client
    
    Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/008d914d-8cbb-4e9f-81b6-f8c3c8bd8d04
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Split OpenTelemetryAgent ctor to preserve original (innerAgent, sourceName) signature
    
    Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/a890c9a7-0b77-40ab-802c-dfbf09f8c260
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Preserve base AgentRunOptions properties and avoid double-wrap on user factory
    
    Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/3afbf18c-de22-4236-a2f2-02ca1e98ae21
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * .NET: OpenTelemetryAgent normalize sourceName once and add OTEL wiring path coverage
    
    Normalize the configured source name once in the constructor so the outer OpenTelemetryChatClient and the auto-wired inner OpenTelemetryChatClient always emit spans on the same ActivitySource. A caller passing an empty string previously produced agent-level spans on DefaultSourceName but auto-wired chat spans on the empty source, causing the chat spans to be silently dropped by exporters subscribed to the default source.
    
    Tests added to cover the previously unexercised OTEL wiring branches:
    
    - Ctor_NullOrEmptySourceName_AutoWiredChatClientUsesDefaultSource_Async (Theory: null and empty)
    
    - AutoWireChatClient_PlainAgentRunOptions_PreservesContinuationToken_Async
    
    - AutoWireChatClient_ChatClientAgentRunOptions_NoUserFactory_PreservesChatOptions_Async
    
    - AutoWireChatClient_StreamingDisabled_DoesNotEmitChatSpan_Async
    
    * .NET: Mark OpenTelemetryAgent autoWireChatClient ctor as [Experimental]
    
    Annotate the new 3-arg OpenTelemetryAgent(AIAgent, string?, bool) constructor with [Experimental(DiagnosticIds.Experiments.AgentsAIExperiments)] (MAAI001) so callers must explicitly opt in to the auto-wire toggle. The original 2-arg constructor stays non-experimental and delegates with autoWireChatClient: true; the delegating call is locally suppressed so the existing source compatibility surface is preserved.
    
    * .NET: OpenTelemetryAgent address westey-m PR review
    
    - Use string.IsNullOrWhiteSpace (not IsNullOrEmpty) when normalizing the constructor sourceName, so callers passing whitespace-only strings still land on OpenTelemetryConsts.DefaultSourceName instead of an unsubscribed ActivitySource.
    
    - Fix the misleading pragma comment on the 2-arg ctor delegating call: auto-wiring is the new default, it does not preserve the original (pre-PR) behavior.
    
    - Expand the GetRunOptionsWithChatClientWiring XML doc to spell out that a base AgentRunOptions (not ChatClientAgentRunOptions) is also accepted: it is converted to ChatClientAgentRunOptions with the auto-wire factory installed and base properties copied.
    
    - Tests: extend the source-name normalization Theory with whitespace cases ('   ' and '\t'); add end-to-end coverage for plain AgentRunOptions over a real ChatClientAgent (sync + streaming) asserting the inner chat client is invoked and both invoke_agent + chat spans are emitted.
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
  • .NET: Fix/per service input persistence on stream error (#5744)
    * .NET: Persist input messages on streaming errors in PerServiceCallChatHistoryPersistingChatClient
    
    When the underlying chat service emits an in-stream error (for example a
    `response.error` SSE event from the OpenAI Responses API on rate limit),
    the OpenAI client surfaces it as an `ErrorContent` update and ends the
    stream without throwing. Previously, `PerServiceCallChatHistoryPersistingChatClient`
    only persisted history when the streaming loop completed successfully and
    `NotifyProvidersOfNewMessagesAsync` was called at the end. On the
    in-stream-error path, the input messages handed to that iteration -
    typically `FunctionResultContent` produced by `FunctionInvokingChatClient`
    in the previous iteration - were never persisted. The next run would
    replay session history with a dangling `FunctionCallContent` and the
    service would reject the request with `No tool output found for function
    call <id>`.
    
    This change:
    
    - Adds a `PersistInputOnErrorAsync` helper that persists the input
      messages (with no response messages) so function-call/function-result
      pairings are not split across failures.
    - Calls the helper from every error path: pre-loop enumerator creation,
      the first `MoveNextAsync`, the in-loop `MoveNextAsync`, and a new
      `finally` that handles abnormal iterator disposal.
    - After the streaming loop, scans the assembled response for any
      `ErrorContent` and, if present, persists the input, notifies
      providers of failure, and throws `InvalidOperationException` so the
      error is surfaced to the caller instead of silently corrupting history.
    - Hardens `InMemoryChatHistoryProvider.StoreChatHistoryAsync` to treat
      a null `RequestMessages` as empty, since the new error path can
      invoke it with no response messages.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix dropped FunctionResultContent on streaming pipeline early-disposal
    
    When a consumer of ChatClientAgent.RunStreamingAsync stops iterating early
    (e.g. ToolApprovalAgent yields the approval request and then `yield break`),
    the framework cascades DisposeAsync down the stream. C# async iterators do
    not auto-dispose IAsyncDisposable locals, so the inner enumerator returned
    by IChatClient.GetStreamingResponseAsync(...).GetAsyncEnumerator(ct) was
    left suspended. That suspended FunctionInvokingChatClient downstream, which
    suspended PerServiceCallChatHistoryPersistingChatClient at its `yield
    return`, so its finally block never ran and the in-flight
    FunctionResultContent for the just-completed tool call was not persisted
    to chat history. The next turn then loaded a session that contained a
    FunctionCallContent with no matching FunctionResultContent and the model
    returned HTTP 400 `No tool output found for function call`.
    
    Fixes:
    
    * ChatClientAgent.RunStreamingAsync: wrap the iteration in
      try/finally that disposes the inner enumerator. Disposal now cascades
      through the pipeline and PerService's finally runs on early exit.
    * PerServiceCallChatHistoryPersistingChatClient: in the streaming path,
      snapshot input messages with `messages.ToList()` (the caller, FICC,
      reuses a single mutable buffer across iterations and may mutate it
      before our finally / error path persists), wrap GetAsyncEnumerator,
      the first MoveNextAsync, and in-loop MoveNextAsync in try/catch each
      calling PersistInputOnErrorAsync + NotifyProvidersOfFailureAsync, and
      add a finally that calls PersistInputOnErrorAsync when the loop did
      not exit normally so per-iteration FRCs are persisted on early
      disposal as well as on errors.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Add tests for PerService streaming error/dispose persistence paths
    
    Adds five regression tests covering the new error-path persistence in
    
    PerServiceCallChatHistoryPersistingChatClient.GetStreamingResponseInnerAsync:
    
    - Persists input messages when GetStreamingResponseAsync throws synchronously.
    
    - Persists input messages when the first MoveNextAsync throws.
    
    - Persists input messages when a mid-stream MoveNextAsync throws.
    
    - Persists input messages when the consumer abandons enumeration early
    
      (the ToolApprovalAgent yield-break / disposal-cascade case).
    
    - Throws and persists input when the stream emits an in-band ErrorContent.
    
    All 66 tests in the class pass on net10.0 and net472.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Address PR feedback on PerService streaming error persistence
    
    Two follow-ups from PR #5744 review:
    
    1. Prevent duplicate persistence on the in-loop MoveNextAsync catch path.
    
       The inner catch persists input messages, then rethrows, which propagates
    
       through the surrounding try/finally where loopExitedNormally is still false,
    
       causing the finally to persist again. Introduced an inputPersisted flag
    
       that the inner catch sets after persisting; the finally now skips when
    
       inputPersisted is true.
    
    2. Use the caller's CancellationToken in the abnormal-exit finally instead
    
       of CancellationToken.None, so cleanup remains responsive to cancellation.
    
       Fall back to CancellationToken.None only when the caller's token is
    
       already canceled (otherwise the persist call would observe the
    
       cancellation, throw, and mask the original early-exit reason).
    
    Tightened all five new streaming-error tests from Times.AtLeastOnce to
    
    Times.Once on the input-persistence matcher to regression-guard against
    
    duplicate persistence. All 66 tests in the class still pass (net10.0 + net472).
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * .NET: Scope PerService streaming changes to cooperative early-exit only
    
    Per discussion on PR #5744, scope this PR back to fix only the original
    ToolApprovalAgent dropped-FunctionResultContent bug and address the
    enumerator-disposal review comment. Specifically:
    
    - Remove input-message persistence from the GetAsyncEnumerator and
      MoveNextAsync error paths. Routing failed service calls through the
      success notification channel was breaking the provider contract; we
      will instead rely on inner-agent retries for transient errors. Failure
      paths still call NotifyProvidersOfFailureAsync as before.
    - Remove the in-stream ErrorContent detection block (same rationale).
    - Keep the try/finally that calls the (now narrower) early-exit input
      notification on cooperative disposal (e.g. ToolApprovalAgent yield
      break). A new serviceErrorOccurred flag ensures we do NOT renotify
      on exception paths.
    - Always DisposeAsync the underlying enumerator on every exit path,
      addressing the copilot-reviewer comment about leaked HTTP/streams.
    - Rename PersistInputOnErrorAsync -> NotifyProvidersOfEarlyExitInputAsync
      to better reflect what it does and when it runs (rogerbarreto nit).
    - Apply rogerbarreto nit on InMemoryChatHistoryProvider null-coalescing.
    - Drop the four tests that covered the removed error-path behavior;
      keep RunStreamingAsync_PersistsInputMessages_WhenConsumerAbandons
      EnumerationAsync (regression guard for the cooperative-pause path).
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: alliscode <bentho@microsoft.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Add IChatMessageInjector for message injection during function loop (#5679)
    * Adding the ability to inject messages during the function call loop
    
    * Split message injection functionality
    
    * Remove interface, since it is not required not that we split the chat client.
    
    * Address conversation id propogation
    
    * Fix formatting issue
  • .NET: Bump MEAI to 10.5.1 and add Foundry per-call x-client header support (#5652)
    * Bump MEAI to 10.5.1 and add per-call x-client header support
    
    Replaces the brittle UserAgentResponsesClient subclass with a clean
    per-call x-client-* header pipeline built on the new Microsoft.Extensions.AI
    10.5.1 OpenAIRequestPolicies hook.
    
    Public surface (Microsoft.Agents.AI.Foundry, [Experimental(MAAI001)]):
    * chatOptions.WithClientHeader(name, value) and .WithClientHeaders(IEnumerable)
      validate the x-client- prefix (case-insensitive), apply all-or-nothing on
      bulk, and throw InvalidOperationException on foreign-typed slot collision
    * myAgent.AsBuilder().UseClientHeaders().Build() opts a customer-built agent
      into the pipeline; idempotent via agent.GetService<ClientHeadersAgent>()
    * Foundry-built agents (FoundryAgent.Create*) pre-wire automatically
    
    Internals:
    * ClientHeadersAgent decorator snapshots the dict at scope-push time so
      concurrent runs sharing a ChatOptions reference do not leak headers
    * ClientHeadersScope is an AsyncLocal<IReadOnlyDictionary<string,string>?>
      with LIFO push/dispose semantics
    * ClientHeadersPolicy singleton stamps headers via Headers.Set so per-call
      values overwrite any same-name header from earlier policies and so
      duplicate registration is value-stable
    * OpenAIRequestPoliciesReflection dedups against MEAI's private _entries
      field and falls back to AddPolicy on any reflection failure; a CI test
      asserts the field shape on every MEAI bump
    
    Hosting cleanup:
    * Deleted UserAgentResponsesClient and its dummy throwing pipeline
    * HostedAgentUserAgentPolicy is now registered via OpenAIRequestPolicies
      in FoundryHostingExtensions.TryApplyUserAgent
    
    Tests:
    * 19 new unit tests in ClientHeadersExtensionsTests.cs covering validation,
      AsyncLocal isolation, snapshot semantics, end-to-end wire stamping, and
      shared-chat-client dedup
    * Updated OpenTelemetryAgentTests for MEAI 10.5.1 changes to web_search
      serialization and the reduced tool definition payload when sensitive
      data capture is disabled
    
    Microsoft.Extensions.Compliance.Abstractions stays at 10.5.0 because no
    10.5.1 release exists on nuget.org.
    
    * Address PR review: pre-wire AsAIAgent path and dedup TryApplyUserAgent
    
    * FoundryAgent: extract WireClientHeaders helper and call it from the
      internal (AIProjectClient, ChatClientAgent) constructor used by
      AzureAIProjectChatClientExtensions.AsAIAgent so those Foundry-built
      agents also pre-wire the x-client header pipeline.
    * Foundry.Hosting TryApplyUserAgent: dedup HostedAgentUserAgentPolicy
      registration per OpenAIRequestPolicies instance via
      ConditionalWeakTable so per-request resolution does not grow the
      policy list unboundedly on singleton agents.
    
    * Add tests covering AsAIAgent pre-wire and TryApplyUserAgent dedup
    
    Backs the PR review fixes from a4c8f91 with regression tests:
    * ClientHeadersExtensionsTests: AsAIAgent_FoundryAgent_HasPreWiredClientHeadersAgent
      asserts the FoundryAgent built via AzureAIProjectChatClientExtensions.AsAIAgent
      contains a ClientHeadersAgent in its delegating chain (catches future
      regressions of the bypass).
    * ClientHeadersExtensionsTests: FoundryAgent_PublicConstructor_HasPreWiredClientHeadersAgent
      covers the public constructor path the same way.
    * ClientHeadersExtensionsTests: UseClientHeaders_RepeatedRegistrations_OnSameChatClient_OnlyRegistersOnce
      invokes UseClientHeaders 25 times on a shared chat client and asserts via
      reflection that OpenAIRequestPolicies._entries length is exactly 1.
    * HostedTryApplyUserAgentDedupTests: two tests asserting
      FoundryHostingExtensions.TryApplyUserAgent stays at one entry per
      OpenAIRequestPolicies instance after 50 calls on the same agent and across
      distinct agents on different chat clients.
    
    * Move tests next to their SUT
    
    Removes the dedicated HostedTryApplyUserAgentDedupTests.cs test class.
    Tests are co-located with the SUT they exercise:
    
    * FoundryAgentTests.cs gains the Constructor_PreWiresClientHeadersAgent
      and Constructor_FromAsAIAgentExtension_PreWiresClientHeadersAgent
      cases, since FoundryAgent is the SUT for the pre-wire behavior.
    * HostedOutboundUserAgentTests.cs gains the two TryApplyUserAgent dedup
      cases, since FoundryHostingExtensions.TryApplyUserAgent is the SUT
      it already covers.
    * ClientHeadersExtensionsTests.cs keeps only the
      UseClientHeaders_RepeatedRegistrations_OnSameChatClient_OnlyRegistersOnce
      case, which exercises the public ClientHeadersExtensions surface.
    
    * Remove redundant WithCancellation on inner streaming call
    
    ct is already passed to InnerAgent.RunStreamingAsync, so
    .WithCancellation(ct) on the resulting IAsyncEnumerable is a no-op.
    Caught by Sergey on PR review.
    
    * Address PR review: surface downstream MEAI experimental ID
    
    * Add AIOpenAIRequestPolicies = MEAIExperiments alias to
      DiagnosticIds.Experiments (matches the existing AIResponseContinuations,
      AIMcpServers, AIFunctionApprovals pattern).
    * Mark public ClientHeadersExtensions with [Experimental(AIOpenAIRequestPolicies)]
      instead of AgentsAIExperiments. Consumers now see the MEAI001 warning,
      surfacing the dependency on MEAI's experimental OpenAIRequestPolicies hook.
    * Mark internal OpenAIRequestPoliciesReflection with the same alias to
      suppress warnings at the source rather than via project-wide NoWarn.
    * Remove MEAI001 from Foundry csproj NoWarn (kept on Foundry.Hosting where
      pre-PR usages remain).
    * Clarify ClientHeadersScope XML doc: AsyncLocal flows values forward but
      does NOT auto-restore on method return; explicit using/Dispose is what
      gives stack-style LIFO semantics.
  • .NET: Fix YAML block scalar parsing for file skills (#5610)
    * Fix YAML block scalar parsing for file skills
    
    * Address block scalar parsing review feedback
  • .NET: Improve Todo multithreading and inject todos into message list (#5655)
    * Improve Todo multithreading and inject todos into message list
    
    * Address PR comments
  • .NET: Harness Feature branch (#5310)
    * .NET: Add a TODO AIContextProvider (#5233)
    
    * Add a TODO AIContextProvider
    
    * Add unit tests
    
    * Address PR comments
    
    * Address PR comments
    
    * Fix test after removing one tool
    
    * .NET: Add a ModeProvider for managing agent modes (#5247)
    
    * Add a ModeProvider for managing agent modes
    
    * Fix typo
    
    * Fix typo
    
    * Fix typo
    
    * Address PR comments
    
    * .NET: Add sample to show how to build a harness (#5268)
    
    * Add sample to show how to build a harness
    
    * Improve sample
    
    * Sample max output tokens and model
    
    * Fix encoding
    
    * Fix model name in readme
    
    * Address PR comments
    
    * .NET: Add context window size compaction strategy for harness (#5304)
    
    * Add context window size compaction strategy for harness
    
    * Apply suggestions from code review
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Address PR comments
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * .NET: Add a file memory provider (#5315)
    
    * Add a file memory provider
    
    * Address PR comments
    
    * Fix review comments.
    
    * Add additional unit tests
    
    * Addressing PR comments.
    
    * .NET:  Harness: Improve prompts and add FileSystem store (#5365)
    
    * Harness: Improve prompts and add FileSystem store
    
    * Address PR comments
    
    * .NET: Harness: Improve path validation (#5404)
    
    * Harness: Improve path validation
    
    * Address PR comments
    
    * .NET: Add always approve helpers, improve sample and fix bug (#5451)
    
    * Add always approve helpers, improve sample and fix bug
    
    * Address PR comments
    
    * .NET: Make Todo, Mode and FileMemory providers more configurable (#5477)
    
    * Make Todo, Mode and FileMemory providers more configurable
    
    * Address PR comments.
    
    * .NET: Add subagents provider and sample (#5518)
    
    * Add subagents provider and sample
    
    * Addressing PR comments.
    
    * .NET: Harness filememory index plus instructions consistency (#5540)
    
    * Add FileMemoryProvider index and improve instruction consistency
    
    * Address PR comments.
    
    * Address PR comments
    
    * Address PR comments.
    
    * Apply suggestion from @rogerbarreto
    
    Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * .NET: Refactor harness console to be more extensible and easy to understand with better UX (#5573)
    
    * Refactor harness console to be more extensible and easy to understand with better UX.
    
    * Fix formatting issues.
    
    * Allow multiple clarifications in one response
    
    * Address PR comments
    
    * .NET: Add FileAccessProvdider and concurrency fix for FileMemoryProvider (#5583)
    
    * Add FileAccessProvdider and concurrency fix for FileMemoryProvider
    
    * Address PR comments
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  • .NET: [Breaking] Support string[] arguments for file-based skill scripts (#5475)
    * support arguments of string[] shape for file-based skill scripts
    
    * suppress breaking changes errors
    
    * address feedback
    
    * remove unnecessary usung directive
  • .NET: Foundry Evals integration for .NET (#4914)
    * Foundry Evals integration for .NET
    
    - Core evaluation framework: EvalItem, LocalEvaluator, FunctionEvaluator, EvalChecks
    - IAgentEvaluator interface with MeaiEvaluatorAdapter bridge
    - AgentEvaluationExtensions for agent.EvaluateAsync() overloads
    - FoundryEvals wrapping MEAI quality/safety evaluators
    - ConversationSplitters (LastTurn, Full) and IConversationSplitter
    - EvalItem.PerTurnItems() for multi-turn decomposition
    - HasImageContent for multimodal content detection
    - WorkflowEvaluationExtensions for per-agent workflow evaluation
    - 7 eval samples mirroring Python parity:
      02-agents/Evaluation: SimpleEval, ExpectedOutputs, Multimodal
      03-workflows/Evaluation: WorkflowEval
      05-end-to-end/Evaluation: FoundryQuality, MixedProviders, ConversationSplits
    - Comprehensive unit tests (1958 passing)
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Rewrite FoundryEvals to use real Foundry Evals API
    
    Replace MEAI evaluator shim with actual OpenAI EvaluationClient protocol
    methods. FoundryEvals now creates eval definitions, submits runs, polls
    for completion, and fetches per-item results server-side.
    
    - New constructor: FoundryEvals(AIProjectClient, model, evaluators)
    - Add FoundryEvalConverter for MEAI ChatMessage -> Foundry JSON format
    - Add EvalId, RunId, ReportUrl to AgentEvaluationResults
    - All 20 built-in evaluator constants now work (agent, tool, quality, safety)
    - Remove Microsoft.Extensions.AI.Evaluation.Quality/Safety dependencies
    - Update all samples for new constructor (no more ChatConfiguration)
    - Replace BuildEvaluators tests with ResolveEvaluator tests
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add response output to CustomEvals and ExpectedOutputs samples
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address review: pagination, validation, error handling, tests
    
    FoundryEvals fixes:
    - Add pagination for output items (has_more/after cursor)
    - Add guard clauses for pollIntervalSeconds/timeoutSeconds <= 0
    - Fix double TryGetProperty for passed field parsing
    - Throw on all-tool-evaluators with no tool definitions
    - Fix XML doc (default 300s, not 180s)
    
    New tests (30 added, 1989 total):
    - EvalChecks: NonEmpty, ContainsExpected (pass/fail/skip/case),
      HasImageContent, ToolCallsPresent
    - FoundryEvalConverter: ConvertMessage (text, image, function call,
      function results fan-out, empty fallback, mixed content),
      ConvertEvalItem, BuildTestingCriteria (quality/agent/tool/groundedness
      data mappings), BuildItemSchema
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix review: null-refs, Data.ToString() bug, ContainsExpected, add tests
    
    - Fix NullReferenceException in sample Response display (pattern matching)
    - Fix WorkflowEvaluationExtensions Data?.ToString() producing type names
      instead of message text (pattern-match ChatMessage/AgentResponse/list)
    - Change EvalChecks.ContainsExpected to return Passed=false when no
      ExpectedOutput (was silently passing, masking misconfiguration)
    - Add EvalItem constructor tests with LastTurn/Full/null splitters
    - Add FoundryEvalConverter.ConvertMessage DataContent (base64 image) test
    - Add ExtractAgentData tests with ChatMessage, list, and AgentResponse data
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix review: conversation fidelity, eval caching, fallback tests
    
    - WorkflowEvaluationExtensions: preserve full response messages (tool calls,
      intermediate) instead of synthetic 2-message conversation. Cast completed
      Data to AgentResponse and use Messages when available, fallback to text.
    - FoundryEvals: cache evalId per schema shape (hasContext, hasTools) so
      subsequent EvaluateAsync calls create runs under the same eval definition.
    - MeaiEvaluatorAdapter: code already correctly passes queryMessages (not full
      conversation) to IEvaluator — no change needed, verified by inspection.
    - Add tests: AgentResponse full messages preservation, unknown object
      ToString() fallback for ExtractAgentData.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Rename AzureAI→Foundry: move eval files, update references
    
    - Move FoundryEvals.cs and FoundryEvalConverter.cs from
      Microsoft.Agents.AI.AzureAI to Microsoft.Agents.AI.Foundry
    - Update namespace from AzureAI to Foundry in both files
    - Add explicit usings required by Foundry project (no implicit usings)
    - Move FoundryEvalConverter tests to Foundry.UnitTests project
      (avoids ReplacingRedactor type conflict from dual project refs)
    - Update all sample csproj references and using statements
    - Remove Foundry project reference from AI UnitTests
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * PR review round 4: wire up tool extraction, remove eval cache, fix null safety
    
    - BuildEvalItem: extract tools from agent via GetService<ChatOptions>() into EvalItem.Tools (Python parity)
    - FoundryEvals: remove eval ID cache - each call creates fresh definition (matches Python behavior)
    - FoundryEvals: replace null-forgiving operators with descriptive InvalidOperationException
    - MixedProviders sample: remove unnecessary explicit PackageReferences (transitively provided)
    - FoundryEvalConverter: document that tool results take precedence over text content
    - Add LocalEvaluator zero-checks test documenting 0 metrics = failed behavior
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Python-dotnet parity: 9 feature gaps filled
    
    New checks:
    - ToolCallArgsMatch() — verify tool call names + argument subset match
    - ToolCalledCheck(ToolCalledMode.Any, ...) — match any of the specified tools
    - ToolCalledMode enum (All/Any)
    
    FoundryEvals enhancements:
    - Default evaluators now [Relevance, Coherence, TaskAdherence] (was Relevance, Coherence)
    - Auto-add ToolCallAccuracy when items have tool definitions
    - EvaluateTracesAsync — evaluate by response_ids, trace_ids, or agent_id
    - EvaluateFoundryTargetAsync — evaluate deployed Foundry targets
    
    Result type enrichment:
    - AgentEvaluationResults: added Status, Error, PerEvaluator, DetailedItems
    - New EvalItemResult/EvalScoreResult/PerEvaluatorResult types
    - FoundryEvals populates all new fields from API responses
    
    Workflow fix:
    - Skip internal executors (_*, input-conversation, end-conversation, end)
    
    Tests: 8 new tests covering ToolCallArgsMatch, ToolCalledMode.Any, internal executor filtering
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add MeaiEvaluatorAdapter and PerTurnItems edge case tests
    
    - 3 tests for MeaiEvaluatorAdapter: query message forwarding, synthetic
      response fallback, multiple items aggregation
    - 3 tests for EvalItem.PerTurnItems: empty conversation, no user messages,
      system+assistant only
    - StubEvaluator and StubChatClient test helpers
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Blocking link check for outdated package in DevUI.
    
    * Replace Dictionary<string, object> payloads with typed wire models
    
    Introduce internal FoundryEvalWireModels.cs with compile-time-safe types
    for the OpenAI Evals API wire format. The OpenAI .NET SDK (2.9.1) only
    provides protocol-level methods with BinaryContent/ClientResult — no
    typed request models. These internal models replace scattered dictionary
    literals with [JsonPropertyName]-annotated classes, giving:
    
    - Compile-time safety (typos become build errors)
    - Single point of change when the API evolves
    - IntelliSense discoverability
    - Cleaner serialization via JsonPolymorphic for content items
    
    Models: WireContentItem hierarchy (text, image, tool_call, tool_result),
    WireMessage, WireEvalItemPayload, WireTestingCriterion, WireItemSchema,
    WireCreateEvalRequest, WireCreateRunRequest, and data source variants.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Skip metric when Foundry returns neither score nor passed
    
    When an evaluator returns no score and no passed value, the previous
    code created BooleanMetric(name, false), which falsely failed items
    via ItemPassed. Now we skip the MEAI metric entirely for indeterminate
    results — the raw data remains available in DetailedItems for diagnostics.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR #4914 review comments: fix tool evaluator bug and add tests
    
    - Fix duplicate ToolCallAccuracy: resolve evaluator names before checking
      against ToolEvaluators set (Comment 2)
    - Make FilterToolEvaluators internal for testability; add tests for the
      ArgumentException edge case when all evaluators are tool-type (Comment 3)
    - Add CancellationToken test for LocalEvaluator (Comment 4)
    - Add EvaluateAsync integration test on Run with sequential workflow and
      per-agent SubResults verification (Comment 5)
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address Peter's review comments on PR #4914
    
    - Add trailing newline to Evaluation_FoundryQuality.csproj (Comment 6)
    - Make evaluator name lookups case-insensitive: switch BuiltinEvaluators,
      ToolEvaluators, AgentEvaluators, and ResolveEvaluator's StartsWith check
      from Ordinal to OrdinalIgnoreCase (Comment 7)
    - Add Trace.TraceWarning when Foundry returns fewer results than submitted
      items, indicating expected vs actual count before padding (Comment 8)
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add Microsoft.Extensions.AI.Evaluation packages to Directory.Packages.props
    
    These were removed in #5269 as unused, but are needed by the Foundry
    and core evaluation integration added in this PR.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: alliscode <bentho@microsoft.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Standardize file skills terminology on 'directory' (#5205)
    Rename authored identifiers, XML docs, log messages, and comments
    from 'folder' to 'directory' across the file skills codebase for
    consistency with the agentskills.io specification and .NET conventions.
    
    Public API changes (experimental):
    - ScriptFolders → ScriptDirectories
    - ResourceFolders → ResourceDirectories
    
    .NET BCL API calls (Directory.Exists, Path.GetDirectoryName, etc.)
    were already using 'directory' and are unchanged.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Support reflection for discovery of resources and scripts in class-based skills (#5183)
    * support reflection for discovery of resources and scripts in class-based skills
    
    * fix format issues
    
    * refactor samples to use reflection
    
    * Validate resource member signatures during discovery
    
    Add discovery-time validation in AgentClassSkill.DiscoverResources() to
    fail fast when [AgentSkillResource] is applied to members with incompatible
    signatures:
    
    - Reject indexer properties (getter has parameters)
    - Reject methods with parameters other than IServiceProvider or
      CancellationToken
    
    Throws InvalidOperationException with actionable error messages instead of
    allowing silent runtime failures when ReadAsync invokes the AIFunction with
    no named arguments.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * prevent duplicates
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Support custom types in skill resource and script functions (#5152)
    * .NET: Add JsonSerializerOptions support to programmatic skill APIs
    
    Allow callers to pass custom JsonSerializerOptions when creating inline
    resources and scripts via AgentInlineSkill, AgentClassSkill,
    AgentInlineSkillResource, and AgentInlineSkillScript. A skill-level
    default can be set on AgentInlineSkill and overridden per-resource/
    script call.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Update dotnet/tests/Microsoft.Agents.AI.UnitTests/AgentSkills/TestSkillTypes.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  • .NET: Fix compaction chat history duplication bug (#5149)
    * Fix chat history duplication bug
    
    * Apply suggestion from @Copilot
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  • .NET: Align skill folder discovery with spec (#5078)
    * add class-based skills
    
    * address formating issues
    
    * Remove generated filtered-unit.slnx and add to .gitignore
    
    The filtered solution file is generated dynamically by
    eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
    risks it becoming stale and out-of-sync with the real solution.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Remove generated filtered-unit.slnx and add to .gitignore
    
    The filtered solution file is generated dynamically by
    eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
    risks it becoming stale and out-of-sync with the real solution.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * discover scripts and resource from folders defined in spec
    
    * Remove Step05 and Step06 DI skill samples
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * address review comments
    
    * fix build error
    
    * Fix mixed path separators in skill folder discovery on .NET Framework
    
    Path.Combine with forward-slash folder names (e.g. "scripts/f1") produces
    mixed separators on Windows, causing the StartsWith containment check to
    fail against Path.GetFullPath-resolved file paths. Wrap in Path.GetFullPath
    to canonicalize separators before the containment comparison.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * address comment
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: skill as class (#5027)
    * add class-based skills
    
    * address formating issues
    
    * Remove generated filtered-unit.slnx and add to .gitignore
    
    The filtered solution file is generated dynamically by
    eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
    risks it becoming stale and out-of-sync with the real solution.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Remove generated filtered-unit.slnx and add to .gitignore
    
    The filtered solution file is generated dynamically by
    eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
    risks it becoming stale and out-of-sync with the real solution.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * consolidate DI samples into one
    
    * fix file encoding
    
    * suppress compatibility warning
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: [BREAKING] Rename from ServiceStoredSimulatingChatClient to PerServiceCallChatHistoryPersistingChatClient (#4993)
    * Rename from ServiceStoredSimulatingChatClient to PerServiceCallChatHistoryPersistingChatClient
    
    * Address PR comment
  • .NET: Allow Simulating service stored ChatHistory to improve consistency (#4974)
    * Allow Simulating service stored ChatHistory to improve consistency
    
    * Fixing bug in ServiceStoredSimulatingChatClient
    
    * Addressing PR comments.
    
    * Address PR comments
    
    * Apply suggestion from @SergeyMenshykh
    
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
    
    * Fix bug
    
    ---------
    
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  • .NET: Add inline skills API (#4951)
    * add inline skills
    
    * Fix IDE1006 and IDE0004 formatting errors in test files
    
    - Add 'Async' suffix to async test methods in FilteringAgentSkillsSourceTests,
      DeduplicatingAgentSkillsSourceTests, and AgentInMemorySkillsSourceTests
    - Use pragma to suppress false-positive IDE0004 on casts needed for overload
      disambiguation in AgentInlineSkillTests and AgentInlineSkillResourceTests
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * address issues
    
    * address comments
    
    * make inline skills script and resource model classes internal
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: BugFix #3433 ChatClientAgent streaming responses missing messageid (#4615)
    * Changes
    
    * Fix ChatClientAgent streaming responses missing MessageId
    
    Generate fallback MessageId in ChatClientAgent.RunCoreStreamingAsync when
    the underlying LLM provider does not set ChatResponseUpdate.MessageId.
    Without a MessageId the AGUI converter's null==null check silently drops
    all text content, causing CopilotKit Zod validation errors.
    
    Changes:
    - ChatClientAgent: generate msg_{Guid} fallback via ??= in streaming loop
    - AgentResponseExtensions: sync wrapper MessageId back to RawRepresentation
      in AsChatResponseUpdate() so downstream consumers see the value
    - Add unit tests for both fixes and AGUI streaming MessageId scenarios
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR #4615 review comments
    
    - Fix MessageId seeding: use first-seen provider MessageId (or generate
      fallback) and apply consistently to all chunks in the stream, preventing
      message splitting when providers set MessageId only on the first chunk
    - Add test for mixed MessageId scenario (first chunk only)
    - Fix skipped TextStreaming test: assert Empty (not NotEmpty) to match
      actual null==null behavior
    - Fix skipped ToolCalls test: assert empty ParentMessageId to match
      actual empty-string passthrough behavior
    
    * Handle empty MessageId in AsChatResponseUpdate sync
    
    Treat empty/whitespace MessageId the same as null when syncing from
    the AgentResponseUpdate wrapper back to RawRepresentation. Providers
    that return empty string MessageId (e.g. tool call responses) now get
    the wrapper value recovered correctly.
    
    Add test for empty string MessageId recovery scenario.
    
    * Move MessageId fallback generation to AGUI layer
    
    Move fallback MessageId generation from ChatClientAgent to
    AsAGUIEventStreamAsync, addressing the architectural concern that
    MessageId is nullable in the AIAgent abstraction and the requirement
    for non-null values is specific to the AGUI protocol.
    
    The AGUI layer now generates a fallback MessageId for null or
    empty/whitespace values, covering all agent types (not just
    ChatClientAgent) including external implementations.
    
    Changes:
    - Revert MessageId generation from ChatClientAgent.RunCoreStreamingAsync
    - Add fallback MessageId generation in AsAGUIEventStreamAsync for
      null/empty MessageId values (handles both null and whitespace)
    - Unskip and update AGUI tests to verify fallback generation
    - Update ChatClientAgent tests to reflect passthrough behavior
    
    * Revert AsChatResponseUpdate MessageId sync-back
    
    Remove the MessageId sync-back logic from AsChatResponseUpdate() as it
    is no longer needed. With fallback generation moved to the AGUI layer,
    the abstraction layer should not mutate the RawRepresentation object.
    
    Revert to the original passthrough behavior for AsChatResponseUpdate()
    and update tests accordingly.
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: [Breaking] Restructure agent skills to use multi-source architecture (#4871)
    * initial commit
    
    * address comments
    
    * address comments
    
    * address comments
    
    * address  comments
    
    * rename executor to runner to align naming with python implementation
    
    * rename runner execute method to run method
    
    * remove poc leftovers and fix compilation issues
    
    * make script runner optional
    
    * remove unnecessary pragmas
    
    * make resources and scripts props virtual
    
    * address comments
    
    * update comment for name validation regex
    
    * address comments
  • .NET: Fix bug with per-service-call persistence and approvals (#4933)
    * Fix bug with per-service-call persistence and approvals
    
    * Apply suggestions from code review
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  • .NET: Fix ChatOptions mutation in AIContextProviderChatClient across calls (#4891)
    * Fix UseAIContextProviders tool accumulation across calls (#4864)
    
    Clone ChatOptions before mutating it in InvokeProvidersAsync to prevent
    context provider tools from accumulating when the same ChatOptions
    instance is reused across multiple API calls.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Apply suggestions from code review
    
    Co-authored-by: chetantoshniwal <chetantoshniwal@gmail.com>
    
    * Apply suggestion from @westey-m
    
    ---------
    
    Co-authored-by: MAF Dashboard Bot <maf-dashboard-bot@users.noreply.github.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  • .NET: Persist messages during function call loop (#4762)
    * Persist messages during the Function Call Loop
    
    * Revert version reset
    
    * Fix bugs and improve sample
    
    * Fix formatting issues
    
    * Also updating conversation id during run
    
    * Update based on ADR feedback
  • .NET: Update AIContextProviders to use Microsoft.Extensions.Compliance.Redaction (#4854)
    * Update providers to use Microsoft.Extensions.Compliance.Redaction
    
    * Fix formatting.
    
    * Fix readme
  • .NET: Update to OpenAI 2.9.1, Azure.AI.OpenAI 2.9.0-beta.1, Microsoft.Extensions.AI 10.4.0, and Azure.AI.Projects 2.0.0-beta.2 (#4613)
    * Initial plan
    
    * Update code for Microsoft.Extensions.AI.Abstractions 10.4.0 breaking changes
    
    - Rename FunctionApprovalRequestContent → ToolApprovalRequestContent
    - Rename FunctionApprovalResponseContent → ToolApprovalResponseContent
    - Rename UserInputRequestContent → ToolApprovalRequestContent
    - Rename UserInputResponseContent → ToolApprovalResponseContent
    - Update .FunctionCall property → .ToolCall with FunctionCallContent casts where needed
    - Update .Id property → .RequestId on the renamed types
    - Rename FunctionApprovalRequestEventGenerator → ToolApprovalRequestEventGenerator
    - Rename FunctionApprovalResponseEventGenerator → ToolApprovalResponseEventGenerator
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Update OpenAI 2.9.1, ME.AI 10.4.0, fix breaking API changes
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Fix remaining ME.AI 10.4.0 breaking changes: MCP approval types, .Output→.Outputs
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Use pattern matching with `when` for ToolApprovalRequestContent/FunctionCallContent
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Update Azure.AI.OpenAI to 2.9.0-beta.1
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Fix remaining GetResponsesClient(model) build failures for Azure.AI.OpenAI 2.9.0-beta.1
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Address review feedback: remove redundant type checks in TestRequestAgent.cs and fix error message in AIAgentHostExecutor.cs
    
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    
    * Update Azure.AI.Projects to 2.0.0-beta.2 with namespace migration
    
    - Azure.AI.Projects 2.0.0-beta.1 → 2.0.0-beta.2
    - Azure.AI.Projects.OpenAI → Azure.AI.Extensions.OpenAI (transitive)
    - Agent types moved to Azure.AI.Projects.Agents namespace
    - AgentRecord.Versions.Latest → AgentRecord.GetLatestVersion()
    - OpenAPIFunctionDefinition → OpenApiFunctionDefinition
    - BingCustomSearchToolParameters → BingCustomSearchToolOptions
    - MemorySearchPreviewTool.UpdateDelay → UpdateDelayInSecs
    - Azure.Identity 1.17.1 → 1.19.0
    - Microsoft.Identity.Client.Extensions.Msal 4.78.0 → 4.83.1
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Fix remaining type renames for Azure.AI.Projects 2.0.0-beta.2
    
    - BrowserAutomationToolParameters → BrowserAutomationToolOptions
    - MemoryUpdateOptions.UpdateDelay stays as UpdateDelay (not renamed)
    - WaitForMemoriesUpdateAsync parameter order: pollingInterval before options
    - AIProjectAgentsOperations → AgentsClient
    
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
    
    * Fix format errors and OpenTelemetry test for ME.AI 10.4.0
    
    - Remove unused 'using Azure.AI.Extensions.OpenAI' and fix import ordering
      in Agent_With_AzureAIProject/Program.cs
    - Update OpenTelemetryAgentTests: gen_ai.tool.definitions is now always
      emitted regardless of EnableSensitiveData per ME.AI 10.4.0 change
      (dotnet/extensions#7346). Tool definitions are not considered sensitive.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix GetRepoFolder() to work in git worktrees
    
    Use 'workflow-samples' directory as repo root marker instead of '.git',
    which fails in worktrees (.git is a file) and also matches too early
    when a '.github' folder exists in subdirectories.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix formatting: remove unused usings and fix import ordering
    
    dotnet format applied across 59 impacted projects. Primarily removes
    unnecessary 'using Azure.AI.Projects' where Azure.AI.Projects.Agents
    provides all needed types, and fixes import ordering per editorconfig.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Disable AzureAIAgentsPersistent integration tests (#4769)
    
    Azure.AI.Agents.Persistent 1.2.0-beta.9 references McpServerToolApprovalResponseContent
    which was removed in ME.AI 10.4.0 (renamed to ToolApprovalResponseContent), causing
    TypeLoadException at runtime. Mark all 6 test classes with IntegrationDisabled trait
    until Persistent ships a version targeting ME.AI 10.4.0+.
    
    Upstream fix: https://github.com/Azure/azure-sdk-for-net/pull/56929
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add README with compatibility note for AzureAI.Persistent (#4769)
    
    Documents that Azure.AI.Agents.Persistent 1.2.0-beta.9 is only compatible
    with ME.AI ≤10.3.0 and OpenAI ≤2.8.0 due to type renames in ME.AI 10.4.0.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix file encoding: restore UTF-8 BOM on Persistent test files
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Mark AzureAI.Persistent as IsPackable=false (#4769)
    
    Prevent shipping until Azure.AI.Agents.Persistent targets ME.AI 10.4.0+.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Moving IsPackable after import
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
    Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
  • .NET: Validate SkillsInstructionPrompt contains {0} placeholder in FileAgentSkillsProvider (#4642)
    * Fix FileAgentSkillsProvider accepting SkillsInstructionPrompt without {0} placeholder (#4638)
    
    BuildSkillsInstructionPrompt validated only format-string syntax via
    string.Format(template, ""), which silently accepted templates without a
    {0} placeholder. The generated skills list was then dropped from the final
    instructions.
    
    Tighten validation to format with a sentinel string and verify it appears
    in the output, rejecting templates that do not reference argument 0 with
    an ArgumentException.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix netstandard2.0 compat and simplify prompt template validation (#4638)
    
    - Replace string.Contains(string, StringComparison) with IndexOf for
      netstandard2.0/net472 compatibility
    - Remove sentinel round-trip check; validate {0} directly on the raw
      template string using IndexOf
    - Add positive test verifying custom SkillsInstructionPrompt with {0}
      is accepted and applied to output
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <copilot@github.com>
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET Compaction - Allow developer to specify a custom formatter for ToolResultCompactionStrategy (#4667)
    * Initial plan
    
    * Allow developer to specify custom formatter for ToolResultCompactionStrategy
    
    Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
    
    * Refine shape
    
    * Fix test expectation
    
    * Potential fix for pull request finding
    
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
    Co-authored-by: Chris Rickman <crickman@microsoft.com>
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
  • .NET Compaction - Add AsChatReducer() extension to expose CompactionStrategy as IChatReducer (#4664)
    * Initial plan
    
    * Add ChatStrategyExtensions.cs with AsChatReducer() extension method and tests
    
    Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
    
    * Refactor message list creation in ReduceAsync method
    
    * Remove unnecessary blank line in AsChatReducer method
    
    * Potential fix for pull request finding
    
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    
    * Potential fix for pull request finding
    
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    
    * Fix test
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
    Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
    Co-authored-by: Chris Rickman <crickman@microsoft.com>
  • .NET Compaction - Introducing compaction strategies and pipeline (#4533)
    * Checkpoint
    
    * Checkpoint
    
    * Stable
    
    * Strategies
    
    * Updated
    
    * Encoding
    
    * Formatting
    
    * Cleanup
    
    * Formatting
    
    * Tests
    
    * Tuning
    
    * Update tests
    
    * Test update
    
    * Remove working solution
    
    * Add sample to solution
    
    * Sample readyme
    
    * Experimental
    
    * Format
    
    * Formatting
    
    * Encoding
    
    * Support IChatReducer
    
    * Sample output formatting
    
    * Initial plan
    
    * Replace CompactingChatClient with MessageCompactionContextProvider
    
    Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
    
    * Boundary condition
    
    * Fix encoding
    
    * Fix cast
    
    * Test coverage
    
    * Namespace
    
    * Improvements
    
    * Efficiency
    
    * Cleanup
    
    * Detect service managed conversation
    
    * Fix namespace
    
    * Fix merge
    
    * Fix test expectation
    
    * Update dotnet/src/Microsoft.Agents.AI.Abstractions/InMemoryChatHistoryProvider.cs
    
    Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
    
    * Address PR comments (x1)
    
    * Update comment
    
    * Update comments
    
    * Clean-up
    
    * Format output
    
    * Sync sample comment
    
    * Fix condition
    
    * Adjust data-flow
    
    * Address comments (x2)
    
    * Direct compaction
    
    * Fix summarization content
    
    * Argument check / fix count calculation
    
    * Minor follow-up
    
    * Diagnostics
    
    * Minor updates
    
    * Fix state test
    
    * Fix sliding window perf
    
    * Stable state keys
    
    * Increase size computation
    
    * Formatting
    
    * Add README.md for Agent_Step18_CompactionPipeline sample (#4574)
    
    * Sample comments
    
    * Updated
    
    * Update dotnet/src/Microsoft.Agents.AI/Compaction/MessageIndex.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Update dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/CompactionProviderTests.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Update dotnet/src/Microsoft.Agents.AI/Compaction/MessageIndex.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Address copilot comments
    
    * Fix namespace
    
    * Comments / convensions
    
    * Prefix `MessageGroup` and `MessageIndex`
    
    * Fix sliding window
    
    * Update dotnet/src/Microsoft.Agents.AI/Compaction/SummarizationCompactionStrategy.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Update dotnet/src/Microsoft.Agents.AI.Abstractions/InMemoryChatHistoryProvider.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Python alignment
    
    * Fix merge
    
    * Fix equality, readme, and sample
    
    * Readme update and ToolResult fix
    
    * Update dotnet/src/Microsoft.Agents.AI/Compaction/SummarizationCompactionStrategy.cs
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Update dotnet/samples/02-agents/Agents/Agent_Step18_CompactionPipeline/README.md
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Simplify readme
    
    * Update dotnet/samples/02-agents/Agents/Agent_Step18_CompactionPipeline/README.md
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Remove example
    
    * Remove unused
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  • .NET: Fix filter combine logic for ChatHistoryMemoryProvider (#4501)
    * Fix filter combine logic for ChatHistoryMemoryProvider
    
    * Replace var with explicit types in filter building code and test
    
    Address PR review nit: use explicit types instead of var for better
    readability in the filter-building logic and the new combined filter
    compilation test.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix style issues
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • .NET: Discover skill resources from directory instead of markdown links (#4401)
    * discover resources in skills folder
    
    * address pr review comments
    
    * change type of AllowedResourceExtensions
    
    * address pr review comment
  • .NET: [BREAKING] Change *Provider StateKey to list of StateKeys (#4395)
    * Change *Provider StateKey to list of StateKeys
    
    * Add more statekey validation tests
    
    * Address PR comments
  • [BREAKING] Add response filter for store input in *Providers (#4327)
    * Add response filter for store input for *Providers
    
    * Apply suggestions from code review
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    * Address feedback
    
    * Apply suggestions from code review
    
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  • .NET: Add helpers to more easily access in-memory ChatHistory and make ChatHistoryProvider management more configurable. (#4224)
    * Add helpers to more easily access in-memory ChatHistory and make ChatHistoryProvider management more configurable.
    
    * Apply suggestion from @Copilot
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>