Issue: Updating existing traces

[bfhealy]

Issue you'd like to raise.

Hello, I'm wondering if it's possible to update existing, finished traces with tags and/or metadata. When I try this with Client.update_run and specify either tags or extra, I get no error, but there is no change to the trace I specified.

When I run update_run again on the same trace, I get a 409 error with message {"error":"Conflict: payload already received: payloads already received"}. Is it possible to update LS traces after the trace is finished?

Suggestion:

No response

[angus-langchain]

Hi @bfhealy,
Once a run has ended, it can’t be modified further.

Could you share how you’re creating the runs initially? LangSmith only supports a single update per run. That means any additional fields (e.g. outputs, end time, metadata, tags) must be included either:

in the initial create_run call, or

together in a single update_run call assuming the run was not ended in the create_run call.

After a run has ended, updates will not be reflected on the run, and subsequent updates will return the 409 Conflict you’re seeing.

[bfhealy]

Hi @angus-langchain, thanks for the fast response. I'm using LS auto-instrumentation to trace runs. After the runs end, I'm setting up a Client, pulling the runs and looking to update them with additional tagging or metadata. Sounds like that isn't possible, though?

[angus-langchain]

@bfhealy Yeah that's correct, there's no way to update completed traces as they are immutable by design

[angus-langchain]

Would be interested in hearing your usecase here though!