Filtering Traces for LLM Calls and Agent Invocations in FastAPI

·Oct 22, 2025 03:39 PM·

I just got the Tracing setup on my project. I am behind FastAPI, so the traces start from the REST request that come to FastAPI as I need to extract user.id and user.emails as well. I want to filter only the traces that end up making LLM calls or invokes Agents. How do I filter for that in the Trace tab ?

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Filtering Traces for LLM Calls and Agent Invocations in FastAPI

Saurabh K.

·Oct 22, 2025 03:39 PM·

I just got the Tracing setup on my project. I am behind FastAPI, so the traces start from the REST request that come to FastAPI as I need to extract user.id and user.emails as well. I want to filter only the traces that end up making LLM calls or invokes Agents. How do I filter for that in the Trace tab ?

3 comments

· Sorted by Oldest

Saurabh K.
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says "span_kind" does not exist ?
Saurabh K.
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attributes.openinference.span.kind !='LLM'. worked
👍1
Trevor
External
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Hi Saurabh, sounds like you're unblocked now? Yeah you'll want to use the attribute that you mentioned above - the filter bar should have typeahead so you can just type "kind" and it'll give you suggestions on attributes

Saurabh K.
·
·
says "span_kind" does not exist ?
Saurabh K.
·
·
attributes.openinference.span.kind !='LLM'. worked
👍1
Trevor
External
·
·
Hi Saurabh, sounds like you're unblocked now? Yeah you'll want to use the attribute that you mentioned above - the filter bar should have typeahead so you can just type "kind" and it'll give you suggestions on attributes