langwatch

LangWatch — independent third-party profile of a public API surface, by API Evangelist. LangWatch is an open-source LLM observability, evaluation, and AI agent testing platform. Built around OpenTelemetry-native tracing, LangWatch lets teams instrument LLM applications (LangChain, LangGraph, DSPy, OpenAI Agents, LiteLLM, Pydantic AI, CrewAI, AWS Be

GitHub

Official source

Start locally with the CLI guide