I built mcpgen — turn any OpenAPI spec into a working MCP server in one command.

Reddit r/artificial 06/24/26, 11:18 AM Tools

mcp openapi api code-generation developer-tool python cli

Summary

mcpgen is a CLI tool that turns any OpenAPI 3.x spec or Postman collection into a fully functional, self-contained Python MCP server with auto-detected authentication, no runtime dependency, and generates deployable source code.

pip install mcpgen-cli mcpgen https://petstore3.swagger.io/api/v3/openapi.json Generates a complete Python MCP server you own. Not a proxy — actual source code you can read, modify, and deploy anywhere. No runtime dependency on mcpgen. Supports OpenAPI 3.x (JSON/YAML/URL) and Postman collections. Auth auto-detected. Prints your Claude Desktop config block at the end. GitHub: https://github.com/JnanaSrota/mcpgen PyPI: https://pypi.org/project/mcpgen-cli/

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