langchain-instrumentation 0.1.0

OpenTelemetry instrumentation for LangChain and LangGraph spans and metrics.

langchain-instrumentation

OpenTelemetry instrumentation SDK for LangChain and LangGraph.

Install

pip install langchain-instrumentation

Quickstart

from langchain_instrumentation import LangChainConfig, LangChainInstrumentor

instrumentor = LangChainInstrumentor(LangChainConfig())
instrumentor.instrument()

# Optional manual handler injection in custom callback manager flows
handler = instrumentor.handler

# Shutdown or test cleanup
instrumentor.uninstrument()

What it instruments

• LangChain callback lifecycle spans
• Optional LangGraph tracing hooks
• Optional agent factory tracing hooks
• Metrics and structured log emission

Configuration

LangChainConfig controls behavior. Most-used flags:

• emit_metrics, emit_logs
• patch_callback_manager, patch_langgraph, patch_langchain_factories
• record_content, record_raw_payloads, redact_keys