Files

Local MCP with the Responses API

This sample demonstrates how to use a local MCP (Model Context Protocol) client with a ChatClientAgent using the Responses API directly.

What this sample demonstrates

  • Connecting to an MCP server via HTTP (Streamable HTTP transport)
  • Resolving MCP tools locally and wrapping them with logging
  • Using DelegatingAIFunction to add custom behavior to MCP tools
  • Passing locally-resolved MCP tools to ChatClientAgent

Prerequisites

  • .NET 10 SDK or later
  • Microsoft Foundry service endpoint and deployment configured
  • 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"

Run the sample

dotnet run