LangChain MCP Connector

Example Use Cases

• 1

  Access and invoke external MCP-provided tools (filesystem, git, GitHub, etc.) from within LangChain workflows.

• 2

  Standardized tool access across different LLMs by leveraging community MCP servers instead of writing custom tool adapters.

• 3

  Securely inject environment secrets into MCP server configurations and run servers via stdio or HTTP/SSE transports.

Description

This open-source package makes it easy to integrate MCP servers with LangChain by discovering and binding MCP-provided tools to LangChain agents. It supports stdio and HTTP (SSE) transports, environment variable injection for secrets, and example workflows for common servers (filesystem, git, GitHub). The connector helps reuse community MCP servers across different LLMs so you don't need to implement custom tools per model.