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agent-framework/dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step21_WebSearch/README.md
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westey e224f06e60 .NET: Update models used in dotnet samples to gpt-5.4-mini (#5080)
* Update models used in dotnet samples to gpt-5.4-mini

* Fix additional missed sample
2026-04-07 15:34:00 +00:00

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Web Search with the Responses API

This sample shows how to use the Web Search tool with a ChatClientAgent using the Responses API directly.

What this sample demonstrates

  • Using HostedWebSearchTool with ChatClientAgent
  • Processing web search citations and annotations
  • Extracting URL citation details (title, URL) from responses

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