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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 265 repositories
  • docs Public

    Unified LangChain documentation.

    langchain-ai/docs's past year of commit activity
    MDX 430 MIT 2,744 276 152 Updated Oct 14, 2026
  • terraform Public

    Repository containing langchain terraform modules

    langchain-ai/terraform's past year of commit activity
    HCL 20 Apache-2.0 19 0 20 Updated Oct 14, 2026
  • langsmith-cli Public

    A coding agent-first CLI for interacting with LangSmith.

    langchain-ai/langsmith-cli's past year of commit activity
    Go 79 MIT 20 9 61 Updated Oct 14, 2026
  • langsmith-plugin-binary Public

    Shared build, sign, notarize and publish pipeline for the LangSmith plugin repos

    langchain-ai/langsmith-plugin-binary's past year of commit activity
    TypeScript 0 MIT 0 1 11 Updated Oct 14, 2026
  • langsmith-java Public

    LangSmith Java SDK.

    langchain-ai/langsmith-java's past year of commit activity
    Kotlin 33 MIT 8 5 11 Updated Oct 14, 2026
  • langgraph Public

    Build resilient agents.

    langchain-ai/langgraph's past year of commit activity
    Python 43,252 MIT 7,354 584 (11 issues need help) 230 Updated Oct 14, 2026
  • langsmith-javascript Public

    LangSmith JavaScript SDK.

    langchain-ai/langsmith-javascript's past year of commit activity
    TypeScript 2 MIT 0 0 1 Updated Oct 14, 2026
  • langsmith-sdk Public

    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk's past year of commit activity
    Python 1,079 MIT 313 121 127 Updated Oct 14, 2026
  • open-swe Public

    An Open-Source Asynchronous Coding Agent

    langchain-ai/open-swe's past year of commit activity
    Python 11,015 MIT 1,308 0 153 Updated Oct 14, 2026
  • social-media-agent Public

    📲 An agent for sourcing, curating, and scheduling social media posts with human-in-the-loop.

    langchain-ai/social-media-agent's past year of commit activity
    TypeScript 2,840 MIT 520 14 6 Updated Oct 14, 2026
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