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LangChain.js MCP Adapters

Verified Integration
Author: @langchain-ai•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js

Client Configuration

— Connect LangChain.js MCP Adapters to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "langchain-js-mcp-adapters": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-langchain-js-mcp-adapters"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Integrates Model Context Protocol (MCP) tools with LangChain.js applications, supporting both stdio and SSE transports for agent tool orchestration.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for LangChain.js MCP Adapters

MCP is a standard protocol developed by Anthropic for interacting with tools in AI agents, allowing agents to leverage external resources and functionalities.

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