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Openapi MCP Generator logo

Openapi MCP Generator

harsha-iiiv/openapi-mcp-generator

Generate Model Context Protocol (MCP) servers from OpenAPI specifications.

Install

npm install -g openapi-mcp-generator
GitHub stars
87
Category
Developer Tools, AI Chatbot
License
MIT
Updated
Oct 6, 2026

About Openapi MCP Generator

This CLI tool automates the generation of MCP-compatible servers that proxy requests to existing REST APIs—enabling AI agents and other MCP clients to seamlessly interact with your APIs using your choice of transport methods.

Features

  • OpenAPI 3.0 Support: Converts any OpenAPI 3.0+ spec into an MCP-compatible server.

  • Proxy Behavior: Proxies calls to your original REST API while validating request structure and security.

  • Authentication Support: API keys, Bearer tokens, Basic auth, and OAuth2 supported via environment variables.

  • Zod Validation: Automatically generates Zod schemas from OpenAPI definitions for runtime input validation.

  • Typed Server: Fully typed, maintainable TypeScript code output.

  • Multiple Transports: Communicate over stdio, SSE via Hono, or StreamableHTTP.

  • Project Scaffold: Generates a complete Node.js project with tsconfig.json, package.json, and entry point.

  • Built-in HTML Test Clients: Test API interactions visually in your browser (for web-based transports).

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

View all
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Claude Desktop

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Anthropic's official Claude AI desktop application. Supports MCP servers to extend functionality.

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