LangChain MCP Server

Installation

Use the upstream install or setup path that matches your environment:

• You can use npm, pnpm, or yarn to install LangChain.js
• npm install -S langchain or pnpm install langchain or yarn add langchain

Requirements and caveats from upstream:

• For an equivalent Python library, check out LangChain.
• Node.js (ESM and CommonJS) - 20.x, 22.x, 24.x

Basic usage or getting-started notes:

• Just getting started? Check out Deep Agents — a higher-level package built on LangChain for agents that have built-in capabilites for common usage patterns s...

• Getting started: Installation, setting up the environment, simple examples

• Source: https://github.com/langchain-ai/langchainjs

• Extracted from upstream docs: https://raw.githubusercontent.com/langchain-ai/langchainjs/HEAD/README.md

Source

• Agent Skill Exchange