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feat(langchain): Change LLM span operation to generate_text #5705

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ref(langchain): Remove agent name from on_llm_start and clean up tests

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feat(langchain): Change LLM span operation to generate_text #5705

ref(langchain): Remove agent name from on_llm_start and clean up tests
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@sentry/warden / warden completed Mar 20, 2026 in 1m 37s

1 issue

Medium

GEN_AI_AGENT_NAME not captured in on_llm_start despite PR description - `sentry_sdk/integrations/langchain.py:381`

The PR description states that "when an LLM is invoked within an agent context, the agent name is now captured on the span via GEN_AI_AGENT_NAME", but the on_llm_start method does not call _get_current_agent() or set SPANDATA.GEN_AI_AGENT_NAME. The parallel method on_chat_model_start (lines 463-465) does capture the agent name correctly. This means LLM calls via on_llm_start will not have agent context attached, reducing observability as promised.

4 skills analyzed
Skill Findings Duration Cost
code-review 1 1m 4s $0.66
find-bugs 0 1m 34s $1.48
skill-scanner 0 1m 12s $0.35
security-review 0 1m 17s $0.26

Duration: 5m 6s · Tokens: 1.1M in / 12.2k out · Cost: $2.76 (+extraction: $0.01, +fix_gate: $0.00, +dedup: $0.00)

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