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.NET: Add .NET Anthropic Claude Skills sample by Copilot · Pull Request #3497 · microsoft/agent-framework · GitHub
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.NET: Add .NET Anthropic Claude Skills sample - #3497

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Roger Barreto (rogerbarreto) merged 7 commits into
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copilot/add-claude-skills-support
Feb 4, 2026
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.NET: Add .NET Anthropic Claude Skills sample#3497
Roger Barreto (rogerbarreto) merged 7 commits into
mainfrom
copilot/add-claude-skills-support

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Copilot AI commented Jan 29, 2026 •
edited by rogerbarreto
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Motivation and Context

Adds a sample demonstrating Anthropic Claude Skills support in .NET, matching the Python sample functionality as requested in Issue #2690. Follows Stephen Toub's recommended simplified approach using AsAITool().

Description

Sample Agent_Anthropic_Step04_UsingSkills demonstrates:

  • Listing available Anthropic-managed skills
  • Using BetaSkillParams.AsAITool() to add skills (SDK auto-handles beta flags)
  • Extended thinking configuration
  • Downloading generated files via Files API
BetaSkillParams pptxSkill = new()
{
    Type = BetaSkillParamsType.Anthropic,
    SkillID = "pptx",
    Version = "latest"
};

ChatClientAgent agent = anthropicClient.Beta.AsAIAgent(
    model: model,
    instructions: "You are a helpful agent for creating PowerPoint presentations.",
    tools: [pptxSkill.AsAITool()]);

Key: AsAITool() auto-handles beta headers and container config - no manual RawRepresentationFactory needed!

Changes:

  • Program.cs - Simplified with skills listing and file download
  • README.md - Updated documentation
  • AnthropicSkillsIntegrationTests.cs - Simplified tests

Contribution Checklist

@rogerbarreto
Add Claude Skills sample and integration tests for Anthropic
74ce68f 
- Add Agent_Anthropic_Step04_UsingSkills sample demonstrating pptx skill usage
- Add integration tests for skills functionality
- Update README.md with new sample reference
- Update solution file to include new sample project

Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
Copilot AI changed the title [WIP] Add Claude Skills support example for Anthropic Add .NET Anthropic Claude Skills sample Jan 29, 2026
@markwallace-microsoft Mark Wallace (markwallace-microsoft) added documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs .NET Usage: [Issues, PRs], Target: .Net labels Jan 29, 2026
@github-actions github-actions Bot changed the title Add .NET Anthropic Claude Skills sample .NET: Add .NET Anthropic Claude Skills sample Jan 29, 2026
@rogerbarreto
Roger Barreto (rogerbarreto) marked this pull request as ready for review January 29, 2026 14:07
Copilot AI review requested due to automatic review settings January 29, 2026 14:07
Copilot AI reviewed Jan 29, 2026
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Pull request overview

This PR adds a new .NET sample demonstrating Anthropic Claude Skills support, matching Python sample functionality as requested in Issue #2690. The implementation uses a simplified AsAITool() approach that automatically handles beta flags and container configuration.

Changes:

  • Added a new sample Agent_Anthropic_Step04_UsingSkills demonstrating Skills usage (pptx skill)
  • Added integration tests for Skills functionality in AnthropicSkillsIntegrationTests.cs
  • Updated parent README to reference the new sample

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file
File Description
AnthropicSkillsIntegrationTests.cs Integration tests for Anthropic Skills functionality with two test cases
Agent_Anthropic_Step04_UsingSkills/README.md Documentation for the Skills sample with code examples and prerequisites
Agent_Anthropic_Step04_UsingSkills/Program.cs Sample code demonstrating Skills listing, agent creation, and file download
Agent_Anthropic_Step04_UsingSkills.csproj Project configuration file matching existing sample patterns
agent-framework-dotnet.slnx Solution file updated to include the new sample project
AgentWithAnthropic/README.md Updated table of samples to reference the new Skills sample

Comment thread dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step04_UsingSkills/Program.cs Resolved
Comment thread dotnet/tests/AnthropicChatCompletion.IntegrationTests/AnthropicSkillsIntegrationTests.cs Resolved
Comment thread dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step04_UsingSkills/Program.cs Resolved
Comment thread dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step04_UsingSkills/README.md Resolved
Comment thread dotnet/tests/AnthropicChatCompletion.IntegrationTests/AnthropicSkillsIntegrationTests.cs Resolved
@rogerbarreto
Roger Barreto (rogerbarreto) added this pull request to the merge queue Feb 4, 2026
@github-merge-queue
github-merge-queue Bot removed this pull request from the merge queue due to failed status checks Feb 4, 2026
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1 inactive deployment
integration — 093fdf61 Deployed Feb 4, 2026 by rogerbarreto via dotnet-build-and-test (net472, windows-latest, Release, true, integration) #10751
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Copilot left review comments
@alliscode Ben Thomas (alliscode) alliscode approved these changes
@rogerbarreto Roger Barreto (rogerbarreto) Awaiting requested review from rogerbarreto rogerbarreto is a code owner
+2 more reviewers
@peibekwe Peter Ibekwe (peibekwe) peibekwe approved these changes
@markwallace-microsoft Mark Wallace (markwallace-microsoft) markwallace-microsoft approved these changes
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@rogerbarreto Roger Barreto (rogerbarreto)

Copilot code review Copilot

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documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs .NET Usage: [Issues, PRs], Target: .Net

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.NET: Claude Skills support

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