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@langchain-ai

LangChain

README.md

The agent engineering platform.

Core OSS libraries:

Commercial Platform:

  • LangSmith – platform for building and monitoring production-grade LLM applications

OSS extensions and apps:

  • Deep Agents Code - dcode is an open-source coding agent in your terminal, similar to Claude Code or Cursor, powered by any LLM
  • Open SWE – open-source asynchronous coding agent
  • OpenWiki - CLI agent for codebase and personal memory wiki generation & maintenance.
  • Agent Protocol – our attempt at codifying the framework-agnostic APIs that are needed to serve LLM agents in production

Learn more

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Repositories

Showing 10 of 264 repositories
  • docs Public

    Unified LangChain documentation.

    langchain-ai/docs's past year of commit activity
    MDX 420 MIT 2,719 239 113 Updated Sep 25, 2026
  • langsmith-sdk Public

    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk's past year of commit activity
    Python 1,062 MIT 299 119 108 Updated Sep 25, 2026
  • deepagents Public

    The batteries-included agent harness.

    langchain-ai/deepagents's past year of commit activity
    Python 29,760 MIT 4,180 152 24 Updated Sep 25, 2026
  • open-swe Public

    An Open-Source Asynchronous Coding Agent

    langchain-ai/open-swe's past year of commit activity
    Python 10,763 MIT 1,285 0 176 Updated Sep 25, 2026
  • langchain Public

    The agent engineering platform.

    langchain-ai/langchain's past year of commit activity
    Python 147,034 MIT 24,603 468 (10 issues need help) 104 Updated Sep 25, 2026
  • openwiki Public

    OpenWiki is a CLI that writes and maintains agent documentation for your codebase.

    langchain-ai/openwiki's past year of commit activity
    TypeScript 16,781 MIT 1,218 72 85 Updated Sep 25, 2026
  • langchain-google Public

    🦜🔗 LangChain interfaces to Google's suite of AI products (e.g. Gemini & Vertex AI)

    langchain-ai/langchain-google's past year of commit activity
    Python 405 MIT 495 88 (10 issues need help) 111 Updated Sep 25, 2026
  • terraform Public

    Repository containing langchain terraform modules

    langchain-ai/terraform's past year of commit activity
    HCL 20 Apache-2.0 20 76 10 Updated Sep 25, 2026
  • langsmith-cursor-plugins Public

    LangSmith plugins for Cursor

    langchain-ai/langsmith-cursor-plugins's past year of commit activity
    TypeScript 3 2 1 9 Updated Sep 25, 2026
  • langgraphjs Public

    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs's past year of commit activity
    TypeScript 3,311 MIT 588 90 73 Updated Sep 25, 2026
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