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langchain-ai/langchainjs

TypeScript Tracked since 2023-02-06 Updated 2026-07-16 View source ↗

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18.0k Stars

The agent engineering platform

About

LangChain is a framework for building LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves.

Just getting started? Check out Deep Agents — a higher-level package built on LangChain for agents that have built-in capabilites for common usage patterns such as planning, subagents, file system usage, and more.

Documentation: To learn more about LangChain, check out the docs.

If you're looking for more advanced customization or agent orchestration, check out LangGraph.js, our framework for building agents and controllable…

Excerpted from github.com/langchain-ai/langchainjs

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Stars 18.0k 2026-07-16
Forks 3.3k 2026-07-16
Commits 8.0k 2026-07-16
Releases 1.0k 2026-07-16
Watchers 93 2026-07-16
Open issues 212 2026-07-16
Open PRs 209 2026-07-16