langchain-ai

Build resilient language agents as graphs.

Agent harness built with LangChain and LangGraph. Equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - well-equipped to handle complex agentic tasks.

The agent engineering platform

An Open-Source Asynchronous Coding Agent

Fully local web research and report writing assistant

GitHub repository langchain-ai/rag-from-scratch; metadata recovered from GitHub Search API.

🦜💬 Web app for interacting with any LangGraph agent (PY & TS) via a chat interface.

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

Custom UI for Deep Agents

For your multi-agent needs

Agent harness built with LangChain and LangGraph. Equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - well-equipped to handle complex agentic tasks.

Readymade evaluators for your LLM apps

📥 An inbox UX for interacting with human-in-the-loop agents.

LangGraph template for a simple ReAct agent

Readymade evaluators for agent trajectories

Build LangGraph agents with large numbers of tools

GitHub repository langchain-ai/memory-agent; metadata recovered from GitHub Search API.

A managed RAG API server.

LangGraph Studio template for creating an agent that does web research to genearte or enrich structured data.

An implementation of a computer use agent (CUA) using LangGraph

fullstack chat agent with authentication, request credits and payments built in

GitHub repository langchain-ai/retrieval-agent-template; metadata recovered from GitHub Search API.

GitHub repository langchain-ai/react-agent-js; metadata recovered from GitHub Search API.

A general-purpose coding agent that runs inside an NVIDIA OpenShell sandbox, orchestrated by Deep Agents and powered by NVIDIA Nemotron. The agent writes and executes code in an isolated, policy-governed Linux environment.

The LangChain wrapper of Milvus vector database for efficient vector search, full-text search, hybrid retrieval and RAG.

Ablation study comparing Claude Code configurations

A coding agent-first CLI for interacting with LangSmith.

Framework to build resilient language agents as graphs. Topics: agents, ai, artificial-intelligence, generative-ai, llm, node, typescript.

Search arXiv preprint repository for papers in physics, mathematics, computer science, quantitative biology, and related fields

Use this skill when creating short-form social media content for LinkedIn, Twitter/X, or other platforms

Use this skill for requests related to web research; it provides a structured approach to conducting comprehensive web research

Expose llms-txt to IDEs for development Topics: agents, claude-code, cursor, ide, llms, llms-txt.

LangSmith plugins for Claude Code

Workshop series teaching the AI Engineering Lifecycle using LangChain, LangGraph, and LangSmith

** THIS REPO HAS MOVED TO https://github.com/langchain-ai/langchainjs/tree/main/libs/langchain-mcp-adapters ** Adapters for integrating Model Context Protocol (MCP) tools with LangChain.js applications, supporting both s

Build an email assistant with human-in-the-loop and memory Topics: agents, memory.

GitHub repository langchain-ai/gen-ui-workflow; metadata recovered from GitHub Search API.