Lookspan adapter for LangChain / LangGraph — emits spans for chains, LLM calls, and tools.
Project description
lookspan-langgraph
Drop-in callback handler that streams every chain, LLM call, and tool invocation to your local Lookspan dashboard.
Install
pip install lookspan-langgraph
Quick start
from lookspan import LookspanClient
from lookspan_langgraph import LookspanCallbackHandler
client = LookspanClient(endpoint="http://127.0.0.1:3100/api/ingest")
handler = LookspanCallbackHandler(client=client, agent_id="my-agent")
# LangChain
result = chain.invoke({"input": "hello"}, config={"callbacks": [handler]})
# LangGraph
result = graph.invoke({"messages": []}, config={"callbacks": [handler]})
client.flush()
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