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.NET: Expose workflows as MCP tools when hosting on Azure functions (#4768)

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* Expose workflow as MCP Tool

* Expose workflow as MCP Tool

* Cleanup

* PR feedback fixes

* update changelog to include PR numner

* Improvements to error handling.

* Adding a sample project demonstrating how to setup Agents and Workflows together.

* Ensure duplicate agent registrations are properly handled.
This commit is contained in:
Shyju Krishnankutty
2026-03-25 15:43:15 +00:00
committed by GitHub
parent a9db40886e
commit 49d69b3bf5
28 changed files with 1011 additions and 39 deletions
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dotnet/src/Microsoft.Agents.AI.Hosting.AzureFunctions/BuiltInFunctionExecutor.cs
+14
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@@ -167,6 +167,20 @@ internal sealed class BuiltInFunctionExecutor : IFunctionExecutor
return;
}
if (context.FunctionDefinition.EntryPoint == BuiltInFunctions.RunWorkflowMcpToolFunctionEntryPoint)
{
if (mcpToolInvocationContext is null)
{
throw new InvalidOperationException($"MCP tool invocation context binding is missing for the invocation {context.InvocationId}.");
}
context.GetInvocationResult().Value = await BuiltInFunctions.RunWorkflowMcpToolAsync(
mcpToolInvocationContext,
durableTaskClient,
context);
return;
}
throw new InvalidOperationException($"Unsupported function entry point '{context.FunctionDefinition.EntryPoint}' for invocation {context.InvocationId}.");
}