WIP-Run workflow as mcp tool.

dotnet/src/Microsoft.Agents.AI.DurableTask/ServiceCollectionExtensions.cs

@@ -112,6 +112,11 @@ public static class ServiceCollectionExtensions
             services.AddKeyedSingleton(factory.Key, (sp, _) => factory.Value(sp).AsDurableAgentProxy(sp));
         }
 
+        // Register the agent factories dictionary for backward compatibility.
+        // This allows consumers to retrieve agents via services.GetService<IReadOnlyDictionary<string, Func<IServiceProvider, AIAgent>>>().
+        services.TryAddSingleton(
+            sp => sp.GetRequiredService<DurableAgentsOptions>().GetAgentFactories());
+
         // A custom data converter is needed because the default chat client uses camel case for JSON properties,
         // which is not the default behavior for the Durable Task SDK.
         services.TryAddSingleton<DataConverter, DefaultDataConverter>();

dotnet/src/Microsoft.Agents.AI.Hosting.AzureFunctions/BuiltInFunctionExecutor.cs

@@ -154,6 +154,18 @@ internal sealed class BuiltInFunctionExecutor : IFunctionExecutor
             return;
         }
 
+        // Handle workflow MCP tool trigger
+        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}.");
     }
 }

dotnet/src/Microsoft.Agents.AI.Hosting.AzureFunctions/CoreAgentConfigurationExtensions.cs

@@ -72,6 +72,7 @@ internal static class CoreAgentConfigurationExtensions
     {
         return string.Equals(entryPoint, BuiltInFunctions.RunAgentHttpFunctionEntryPoint, StringComparison.Ordinal)
             || string.Equals(entryPoint, BuiltInFunctions.RunAgentMcpToolFunctionEntryPoint, StringComparison.Ordinal)
+            || string.Equals(entryPoint, BuiltInFunctions.RunWorkflowMcpToolFunctionEntryPoint, StringComparison.Ordinal)
             || string.Equals(entryPoint, BuiltInFunctions.RunWorkflowOrechstrtationHttpFunctionEntryPoint, StringComparison.Ordinal)
             || string.Equals(entryPoint, BuiltInFunctions.InvokeWorkflowActivityFunctionEntryPoint, StringComparison.Ordinal)
             || string.Equals(entryPoint, BuiltInFunctions.RunAgentEntityFunctionEntryPoint, StringComparison.Ordinal);