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* feat: add Agent_Step26_FoundryToolboxMcpSkills sample Add a new sample demonstrating MCP-based skills discovery from a Foundry Toolbox endpoint using AgentSkillsProviderBuilder and AIContextProviders. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * fix: address PR review comments for Step26 sample - Add Foundry-Features: Toolboxes=V1Preview header to MCP transport options, matching the Step25 pattern - Document skill://index.json prerequisite in README Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Update dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step26_FoundryToolboxMcpSkills/Program.cs Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com> --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
Foundry Toolbox MCP Skills
This sample uses
AgentSkillsProviderBuilder to discover MCP-based skills from a Foundry Toolbox endpoint
and inject them as AIContextProviders so the agent can discover and use them at runtime.
What this sample demonstrates
- Connecting to a Foundry toolbox's MCP endpoint via Streamable HTTP transport
- Injecting a fresh Azure AI bearer token (
https://ai.azure.com/.default) on every MCP request - Using
AgentSkillsProviderBuilder.UseMcpSkills(client)to discover skills from the toolbox - Injecting the discovered skills into
AIProjectClient.AsAIAgent(...)viaAIContextProviders
Prerequisites
- A Microsoft Foundry project with a toolbox already configured
- The toolbox MCP endpoint must expose
skill://index.jsonwithskill-mdentries (SEP-2640). If the resource is absent, the sample runs but the skills provider will be empty. - Azure CLI installed and authenticated (
az login)
Set the following environment variables:
$env:AZURE_AI_PROJECT_ENDPOINT="https://your-foundry-service.services.ai.azure.com/api/projects/your-foundry-project"
$env:AZURE_AI_MODEL_DEPLOYMENT_NAME="gpt-5.4-mini"
$env:FOUNDRY_TOOLBOX_MCP_SERVER_URL="https://your-foundry-service.services.ai.azure.com/api/projects/your-project/toolboxes/your-toolbox/mcp?api-version=v1"
Run the sample
dotnet run