langchain-mcp-tools-py

Overview

A lightweight Python library that simplifies integrating MCP server tools into LangChain applications. It provides a utility function to initialize multiple MCP servers in parallel and convert their tools into LangChain-compatible tools. The library supports various MCP server configurations including local command-based servers and remote HTTP/SSE/WebSocket servers. However, it only supports text results from tool calls and doesn't implement other MCP features like Resources or Prompts.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• convert_mcp_to_langchain_toolsconvert_mcp_to_langchain_tools(mcp_servers)

  Converts MCP server configurations to LangChain tools by initializing servers and wrapping their tools.

  Try:Convert MCP servers to LangChain toolsTry:Initialize filesystem and fetch MCP servers

Note: The README focuses on a utility function that converts MCP servers to LangChain tools, but doesn't explicitly list the specific MCP tools that would be exposed. The actual tools would depend on the MCP servers configured.

Comparable tools

Installation

pip install langchain-mcp-tools

{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "."]
    },
    "fetch": {
      "command": "uvx",
      "args": ["mcp-server-fetch"]
    }
  }
}

FAQ

Does this support all MCP features?

No, this library only supports MCP Tools. Resources, Prompts, and other MCP features are not implemented.

Can I use this with non-text tool results?

Currently, only text results from tool calls are supported. The library filters and uses only text content.

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