MCP To LangChain Tools Conversion Utility / TypeScript

What is MCP To LangChain Tools Conversion Utility / TypeScript?

A lightweight TypeScript library that converts MCP (Model Context Protocol) server tools into LangChain-compatible StructuredTool objects. It allows developers to integrate any MCP server—local or remote—into LangChain agents and chains with minimal configuration.

How to use MCP To LangChain Tools Conversion Utility / TypeScript?

Install via npm i @h1deya/langchain-mcp-tools, then call convertMcpToLangchainTools() with an McpServersConfig object that mirrors the mcpServers structure from Claude for Desktop. The function returns an array of LangChain tools and a cleanup callback. Use the tools with LangChain models and always invoke cleanup() when done.

Key features of MCP To LangChain Tools Conversion Utility / TypeScript

• Converts multiple MCP servers into LangChain tools in parallel
• LLM provider-specific schema transformations (Gemini, OpenAI, etc.)
• Supports local stdio and remote HTTP, SSE, and WebSocket MCP servers
• Automatic transport selection and explicit configuration
• Stderr redirection and working directory control for local servers
• Concurrent cleanup with error handling

Use cases of MCP To LangChain Tools Conversion Utility / TypeScript

• Integrate filesystem, fetch, and search MCP tools into a LangChain agent
• Combine public and private MCP servers (Brave Search, GitHub, Notion) in one application
• Quickly experiment with custom MCP servers in a LangChain prototype
• Access the growing ecosystem of 2000+ MCP servers from LangChain