Hi Databricks Team / Community,

I’m encountering a 500 Internal Server Error when calling an Agent Bricks MAS endpoint in my workspace. The error message is:

500 Internal Error. Please try again later. If this issue persists, please contact Databricks support.

Context:

• I have deployed a multi-agent supervisor using Agent Bricks and exposed it as a serving endpoint.
• I tried with 1~3 agents and all of them give the same error. Testing the agent endpoints separately works fine.

Troubleshooting I’ve Tried:

• Verified workspace permissions; the token/user has access to all referenced models and tools.
• Checked cluster status; compute resources appear healthy.
• Re-deployed the endpoint to ensure the latest agent version is active.
• Tested with smaller payloads.

I would appreciate guidance on:

1. What could cause a 500 Internal Error in Agent Bricks endpoints?
2. How to reliably debug or capture detailed logs for such failures.
3. Any known limitations or workarounds for multi-agent endpoints causing 500 errors.

Thank you in advance for any help or insights!