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agent-framework/dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step13_Plugins/README.md
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Ben Thomas c79f886dc3 .NET: Align Foundry sample environment variables and credentials. (#6422)
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2026-06-11 17:26:00 +00:00

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Using Plugins with the Responses API

This sample shows how to use plugins with a ChatClientAgent using the Responses API directly, with dependency injection for plugin services.

What this sample demonstrates

  • Creating plugin classes with injected dependencies
  • Registering services and building a service provider
  • Passing services to the ChatClientAgent via the options-based constructor
  • Using AIFunctionFactory to expose plugin methods as AI tools

Prerequisites

  • .NET 10 SDK or later
  • Microsoft Foundry service endpoint and deployment configured
  • An authenticated Azure identity (for example, sign in with az login)

Set the following environment variables:

$env:FOUNDRY_PROJECT_ENDPOINT="https://your-foundry-service.services.ai.azure.com/api/projects/your-foundry-project"
$env:FOUNDRY_MODEL="gpt-5.4-mini"

Run the sample

dotnet run