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LangSmith API

The LangSmith API is used to programmatically create and manage LangSmith resources including tracer sessions, datasets, examples, workspaces, audit logs, filter views, insights jobs, tags, and prompts. LangSmith is the agent engineering platform maintained by LangChain that provides observability, evaluation, and deployment tooling for LLM and agent applications. The API is OpenAPI 3.1 with 345+ endpoints and uses an X-Api-Key header for authentication.

Documentation

Specifications

Other Resources

OpenAPI

langchain-openapi.json Raw ↑