langchain-ai/langserve

LangServe 🦜️🏓

Archived

/ 100

Emerging

Deploys LangChain runnables as REST APIs with FastAPI, automatically inferring input/output schemas from Pydantic models and providing `/invoke`, `/batch`, `/stream`, and `/stream_log` endpoints. Includes a web playground for testing, optional LangSmith tracing integration, and client SDKs (Python and JavaScript) that treat remote runnables as local objects. Built on battle-tested async primitives (uvloop, asyncio) for efficient concurrent request handling.

2,282 stars.

Archived No Package No Dependents

Maintenance 0 / 25

Adoption 10 / 25

Maturity 16 / 25

Community 21 / 25

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Stars

2,282

Forks

262

Language

JavaScript

License

—

Category

langchain-application-development

Last pushed

Mar 03, 2026

Commits (30d)

GitHub

LangChain Application Development · 52 tools

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