mcp-openapi – Convert any OpenAPI spec into MCP tools with one command

Summary: mcp-openapi transforms OpenAPI/Swagger specs into MCP tools for Claude, Cursor, and Windsurf without configuration or boilerplate. It supports Swagger 2.0, OpenAPI 3.x, built-in authentication, and flattens parameter schemas to improve LLM accuracy.

What it does

It converts API specs from a URL into MCP tools using a single command, handling authentication and flattening nested schemas for better language model performance.

Who it's for

Developers integrating REST APIs with Claude, Cursor, or Windsurf who want to avoid writing MCP server boilerplate.

Why it matters

It simplifies and automates the creation of MCP tools, reducing manual setup and improving API integration accuracy for LLMs.