.NET: AzureAI Package - Skip tool validation when UseProvidedChatClientAsIs is true#4389
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rogerbarreto merged 5 commits intomicrosoft:mainfrom Mar 2, 2026
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…t#3855) When GetAIAgentAsync is called with ChatClientAgentOptions.UseProvidedChatClientAsIs = true, skip requireInvocableTools validation so users can handle function calls manually via custom ChatClient middleware without needing to provide matching AIFunction tools. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
This PR updates the AzureAI .NET agent creation flow so that when GetAIAgentAsync is called with ChatClientAgentOptions.UseProvidedChatClientAsIs = true, the extension skips invocable-tool validation, enabling manual tool handling via custom IChatClient middleware.
Changes:
- Update
GetAIAgentAsyncto disablerequireInvocableToolsvalidation whenUseProvidedChatClientAsIsis enabled. - Add a unit test asserting no exception is thrown in this mode when server function tools exist but no matching invocable tools are provided.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| dotnet/src/Microsoft.Agents.AI.AzureAI/AzureAIProjectChatClientExtensions.cs | Gates requireInvocableTools based on UseProvidedChatClientAsIs for GetAIAgentAsync. |
| dotnet/tests/Microsoft.Agents.AI.AzureAI.UnitTests/AzureAIProjectChatClientExtensionsTests.cs | Adds test coverage for skipping tool validation when UseProvidedChatClientAsIs=true. |
dotnet/src/Microsoft.Agents.AI.AzureAI/AzureAIProjectChatClientExtensions.cs
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UseProvidedChatClientAsIs is a non-nullable bool, so use ! operator instead of != true for clarity. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…microsoft#3855) Always match provided AIFunctions to server-side function definitions regardless of requireInvocableTools flag. Only throw when validation is required and no match is found. This ensures UseProvidedChatClientAsIs still preserves user-provided AIFunction tools instead of falling back to the broken ResponseToolAITool wrapper. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Motivation and Context
When GetAIAgentAsync is called with ChatClientAgentOptions.UseProvidedChatClientAsIs = true, skip requireInvocableTools validation so users can handle function calls manually via custom ChatClient middleware without needing to provide matching AIFunction tools.