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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 266 repositories
  • langchain-aws Public

    Build LangChain Applications on AWS

    langchain-ai/langchain-aws's past year of commit activity
    Python 352 MIT 322 64 (1 issue needs help) 43 Updated Oct 19, 2026
  • macaw-design-system Public

    Shared design system for LangChain products

    langchain-ai/macaw-design-system's past year of commit activity
    TypeScript 10 MIT 0 0 9 Updated Oct 19, 2026
  • langchain Public

    The agent engineering platform.

    langchain-ai/langchain's past year of commit activity
    Python 148,092 MIT 24,856 549 (10 issues need help) 117 Updated Oct 19, 2026
  • langsmith-python Public

    Langsmith Python SDK

    langchain-ai/langsmith-python's past year of commit activity
    Python 15 MIT 12 16 27 Updated Oct 19, 2026
  • open-swe Public

    An Open-Source Asynchronous Coding Agent

    langchain-ai/open-swe's past year of commit activity
    Python 11,043 MIT 1,434 0 190 Updated Oct 19, 2026
  • langsmith-claude-code-plugins Public

    LangSmith plugins for Claude Code

    langchain-ai/langsmith-claude-code-plugins's past year of commit activity
    TypeScript 72 MIT 18 1 5 Updated Oct 19, 2026
  • docs Public

    Unified LangChain documentation.

    langchain-ai/docs's past year of commit activity
    MDX 435 MIT 2,747 263 106 Updated Oct 19, 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 1 1 0 Updated Oct 19, 2026
  • helm Public

    Repository hosting Langchain helm charts.

    langchain-ai/helm's past year of commit activity
    Shell 97 Apache-2.0 47 4 57 Updated Oct 19, 2026
  • langsmith-cli Public

    A coding agent-first CLI for interacting with LangSmith.

    langchain-ai/langsmith-cli's past year of commit activity
    Go 80 MIT 20 10 61 Updated Oct 19, 2026
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