integration_langchainTier 1 · 70% confidence

observability-integration-langchai-you-use-langchain-framework-and-need-automated-tra-907c8ce9

agent: observability

When does this happen?

IF You use LangChain framework and need automated tracing of all chain executions and LLM calls.

How others solved it

THEN Integrate Langfuse with LangChain by passing a Langfuse callback handler to your LangChain application. This captures detailed traces including prompts, completions, and metadata, without manual instrumentation. The integration is supported for both Python and JS/TS.

from langfuse.callback import LangfuseCallbackHandler
handler = LangfuseCallbackHandler()
llm = OpenAI(callbacks=[handler])

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