LangServe
Deploy LangChain runnables as REST APIs
About
LangServe deploys LangChain runnables and chains as REST APIs via FastAPI and Pydantic. It auto-generates input and output schemas from the runnable, provides a playground UI for ad hoc testing, handles streaming and async endpoints, and supplies Python and JavaScript client SDKs that mirror the server interface. The project targets simple Runnable deployments; LangGraph applications are recommended to use LangGraph Cloud instead.
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Details
- Category
- AI Frameworks & Libraries
- Price
- Free
- Platform
- Hybrid
- Difficulty
- Easy (2/5)
- License
- MIT
- Added
- Jan 29, 2026
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