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@langchain-ai

LangChain

README.md

Build context-aware reasoning applications with LangChain’s flexible abstractions and AI-first toolkits.

Core OSS libraries:

Products:

OSS extensions and apps:

  • ChatLangChain and ChatLangChain.js - chatbot for answering questions about LangChain's open source libraries
  • Open Canvas - document & chat-based UX for writing code or markdown. Inspired by OpenAI's Canvas (TypeScript)
  • OpenGPTs - open source version of OpenAI's GPTs API (Python)
  • Email assistant - AI assistant that helps you maintain your emails (Python)
  • LangChain + Next.js template - template LangChain.js + Next.js application
  • Social media agent - agent for sourcing, curating, and scheduling social media posts with human-in-the-loop (TypeScript)
  • 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 222 repositories
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    🦜🔗 Build context-aware reasoning applications 🦜🔗

    langchain-ai/langchainjs’s past year of commit activity
    TypeScript 15,809 MIT 2,790 110 (6 issues need help) 57 Updated Oct 7, 2025
  • docs Public

    🦜🔗 Docs for LangChain projects

    langchain-ai/docs’s past year of commit activity
    MDX 18 MIT 54 67 19 Updated Oct 7, 2025
  • langsmith-sdk Public

    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk’s past year of commit activity
    Python 654 MIT 159 85 20 Updated Oct 7, 2025
  • helm Public

    Repository hosting Langchain helm charts.

    langchain-ai/helm’s past year of commit activity
    Shell 67 Apache-2.0 27 2 0 Updated Oct 7, 2025
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Python 116,778 MIT 19,221 150 (49 issues need help) 92 Updated Oct 8, 2025
  • pylon_data_extractor Public
    langchain-ai/pylon_data_extractor’s past year of commit activity
    Python 2 1 1 0 Updated Oct 7, 2025
  • langchain-postgres Public

    LangChain abstractions backed by Postgres Backend

    langchain-ai/langchain-postgres’s past year of commit activity
    Python 230 MIT 98 56 (7 issues need help) 27 Updated Oct 7, 2025
  • langgraph-management-tools Public

    A toolkit of utilities for managing LangGraph deployments, including thread cleanup, monitoring tools, and operational maintenance scripts

    langchain-ai/langgraph-management-tools’s past year of commit activity
    Python 3 1 0 0 Updated Oct 7, 2025
  • langgraph Public

    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 19,457 MIT 3,424 130 (13 issues need help) 28 Updated Oct 7, 2025
  • langchain-community Public

    Community-maintained LangChain integrations

    langchain-ai/langchain-community’s past year of commit activity
    Python 103 MIT 242 107 (3 issues need help) 128 Updated Oct 7, 2025
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