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Seeing a reproducible LangSmith Playground failure:
Both endpoints return 401:
Response:
{“detail”:“Invalid token”}
Reproduces across:
Note:
This is NOT limited to streaming as /invoke fails as well.
The failing Authorization header is the LangSmith session JWT (not provider key) and the request fails before any provider call is made.
Other LangSmith UI functionality works normally.
Conclusion:
This appears to be a backend auth regression affecting Playground execution endpoints.
If helpful, I can provide:
- exact timestamps (UTC)
- tenant IDs
- sanitized request/response logs
Happy to help debug further.
I am assuming you are using a self-hosted version of the langsmith.
Can you double-check if you have followed all the steps correctly in the given docs.
Moreover, having some logs will be helpful.
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