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.Net: MEAI - Add IChatClient support for ChatCompletionAgents - #11049

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Roger Barreto (rogerbarreto) merged 25 commits into
microsoft:feature-msextensions-aifrom
rogerbarreto:issues/10729-sk-meai-agent-integration
Mar 29, 2025
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.Net: MEAI - Add IChatClient support for ChatCompletionAgents#11049
Roger Barreto (rogerbarreto) merged 25 commits into
microsoft:feature-msextensions-aifrom
rogerbarreto:issues/10729-sk-meai-agent-integration

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@rogerbarreto Roger Barreto (rogerbarreto) commented Mar 18, 2025 •
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Add ChatClient Support to ChatCompletionAgent

Motivation and Context

This PR enhances ChatCompletionAgent to support IChatClient alongside existing IChatCompletionService, providing more flexibility in how chat completions are handled. This enables better integration with existing Microsoft.Extensions.AI types.

Description

Core Changes

  1. Enhanced ChatCompletionAgent to:

    • Support both IChatClient and IChatCompletionService interfaces
    • Maintain backward compatibility with existing implementations

  2. Updated Sample Code:

    • Added new examples in Concepts demonstrating ChatClient usage
    • Updated Getting Started With Agents samples to showcase both service types

  3. Added Comprehensive Unit Tests:

    • Test coverage for Agents with ChatClient integration
    • Verification of both streaming and non-streaming scenarios

  4. Added IChatClient.AsKernelFunctionInvokingClient extension method to enable Kernel Function Invocation support with IChatClient for solutions that target .NET 8 LTS only.

@markwallace-microsoft Mark Wallace (markwallace-microsoft) added .NET Issue or Pull requests regarding .NET code kernel.core labels Mar 18, 2025
@markwallace-microsoft Mark Wallace (markwallace-microsoft) added the kernel Issues or pull requests impacting the core kernel label Mar 19, 2025
@rogerbarreto
Roger Barreto (rogerbarreto) marked this pull request as ready for review March 21, 2025 09:02
@rogerbarreto
Roger Barreto (rogerbarreto) requested a review from a team as a code owner March 21, 2025 09:02
@rogerbarreto Roger Barreto (rogerbarreto) added the msft.ext.ai Related to Microsoft.Extensions.AI label Mar 21, 2025
@rogerbarreto Roger Barreto (rogerbarreto) changed the title .Net: MEAI - Agents IChatClient Seamless Integration - WIP .Net: MEAI - Add IChatClient support for ChatCompletionAgents Mar 21, 2025
SergeyMenshykh
SergeyMenshykh approved these changes Mar 21, 2025
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Comment thread dotnet/samples/Concepts/Agents/DeclarativeAgents.cs Resolved
@rogerbarreto
Roger Barreto (rogerbarreto) merged commit dfbf238 into microsoft:feature-msextensions-ai Mar 29, 2025

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integration — 3ec69158 Deployed Mar 21, 2025 by rogerbarreto
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Reviewers

@stephentoub Stephen Toub (stephentoub) stephentoub left review comments
@SergeyMenshykh SergeyMenshykh SergeyMenshykh approved these changes
@crickman Chris (crickman) Awaiting requested review from crickman

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@rogerbarreto Roger Barreto (rogerbarreto)

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kernel.core kernel Issues or pull requests impacting the core kernel msft.ext.ai Related to Microsoft.Extensions.AI .NET Issue or Pull requests regarding .NET code

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@rogerbarreto @stephentoub @SergeyMenshykh @markwallace-microsoft