1# Service Bus Recipe
2 
3Service Bus queue/topic trigger with managed identity authentication.
4 
5## Template Selection
6 
7Resource filter: `servicebus`  
8Discover templates via MCP tool or CDN manifest where `resource == "servicebus"` and `language` matches user request.
9 
10## Troubleshooting
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12### 500 Error on First Request
13 
14**Cause:** RBAC role assignment hasn't propagated to Service Bus data plane.  
15**Solution:** Wait 30-60 seconds after provisioning, or restart the function app.
16 
17### "Unauthorized" or "Forbidden" Errors
18 
19**Cause:** Missing UAMI credential settings.  
20**Solution:** Ensure all three settings are present in app configuration:
21 
22- `ServiceBusConnection__fullyQualifiedNamespace`
23- `ServiceBusConnection__credential` (value: `managedidentity`)
24- `ServiceBusConnection__clientId`
25 
26See [Service Bus trigger connections](https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-service-bus-trigger#connections) for identity-based config — refer to the **"Connections"** section on that page for managed identity app settings.
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28## Eval
29 
30| Path | Description |
31|------|-------------|
32| [eval/summary.md](eval/summary.md) | Evaluation summary |
33| [eval/python.md](eval/python.md) | Python evaluation results |
34| [eval/typescript.md](eval/typescript.md) | TypeScript evaluation results |
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