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semenshi-m 1d301af7d2 .NET: Add MCP-based skills support (skill-md type) (#6108 )

* Add MCP-based skills support

- Add AgentMcpSkill, AgentMcpSkillResource, AgentMcpSkillsSource, and McpSkillIndex to Microsoft.Agents.AI.Mcp
- Add AgentSkillsProviderBuilderMcpExtensions for DI integration
- Add Agent_Step06_McpBasedSkills sample project
- Add unit tests for AgentMcpSkillsSource
- Update solution file and project references

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Remove unnecessary [Experimental] attributes from MCP package

The package is already alpha, so the [Experimental] attribute is redundant.
Removed from both AgentSkillsProviderBuilderMcpExtensions and
AgentMcpSkillsSource classes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Make Agent_Step06_McpBasedSkills self-contained and add to verify-samples

Embed an internal MCP server (launched via --server flag as a child process)
that serves skill://index.json and skill://unit-converter/SKILL.md resources,
replacing the external MCP_SKILLS_ENDPOINT dependency. The sample now uses
StdioClientTransport and a fixed prompt instead of an interactive loop.

Added SampleDefinition to AgentsSamples.cs for automated verification.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Sort usings

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

1d301af7d2 · 2026-05-27 18:38:57 +00:00

History

Agent_Step06_McpBasedSkills.csproj

.NET: Add MCP-based skills support (skill-md type) (#6108 )

2026-05-27 18:38:57 +00:00

Program.cs

.NET: Add MCP-based skills support (skill-md type) (#6108 )

2026-05-27 18:38:57 +00:00

README.md

.NET: Add MCP-based skills support (skill-md type) (#6108 )

2026-05-27 18:38:57 +00:00

README.md

MCP-Based Agent Skills Sample

This sample demonstrates how to discover Agent Skills served over MCP with a ChatClientAgent.

What it demonstrates

Hosting a small MCP server (in this same executable, launched with --server) that exposes skill resources following the SEP-2640 convention.
Connecting an McpClient to the embedded server via stdio transport.
Building an AgentSkillsProvider via UseMcpSkills(client), which reads skill://index.json (SEP-2640 canonical discovery) and constructs skills from the index entries.
The progressive disclosure pattern across MCP: advertise → load → read resources, exactly as for filesystem-backed skills.

Running the Sample

Prerequisites

.NET 10.0 SDK
Azure OpenAI endpoint with a deployed model

Setup

$env:AZURE_OPENAI_ENDPOINT="https://your-endpoint.openai.azure.com/"
$env:AZURE_OPENAI_DEPLOYMENT_NAME="gpt-5.4-mini"

Run

dotnet run