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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 269 repositories
  • macaw-design-system Public

    Shared design system for LangChain products

    langchain-ai/macaw-design-system's past year of commit activity
    TypeScript 12 MIT 1 0 25 Updated Nov 10, 2026
  • langchainjs Public

    The agent engineering platform

    langchain-ai/langchainjs's past year of commit activity
    TypeScript 18,334 MIT 3,478 273 (2 issues need help) 509 Updated Nov 10, 2026
  • open-swe Public

    An Open-Source Asynchronous Coding Agent

    langchain-ai/open-swe's past year of commit activity
    Python 11,190 MIT 1,318 0 144 Updated Nov 10, 2026
  • deepagents Public

    The batteries-included agent harness.

    langchain-ai/deepagents's past year of commit activity
    Python 31,152 MIT 4,399 181 54 Updated Nov 10, 2026
  • docs Public

    Unified LangChain documentation.

    langchain-ai/docs's past year of commit activity
    MDX 447 MIT 2,811 237 89 Updated Nov 10, 2026
  • langgraphjs Public

    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs's past year of commit activity
    TypeScript 3,411 MIT 639 89 151 Updated Nov 10, 2026
  • langsmith-java Public

    LangSmith Java SDK.

    langchain-ai/langsmith-java's past year of commit activity
    Kotlin 34 MIT 7 4 8 Updated Nov 10, 2026
  • langsmith-go Public
    langchain-ai/langsmith-go's past year of commit activity
    Go 34 MIT 13 2 8 Updated Nov 10, 2026
  • cloud-run-auth-proxy Public

    example repo for deploying LLM auth proxy to Google Cloud Run

    langchain-ai/cloud-run-auth-proxy's past year of commit activity
    Shell 0 3 0 0 Updated Nov 10, 2026
  • langsmith-cli Public

    A coding agent-first CLI for interacting with LangSmith.

    langchain-ai/langsmith-cli's past year of commit activity
    Go 81 MIT 21 10 59 Updated Nov 10, 2026
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