openapi-tool-scaffold

Generate Python MCP server code from OpenAPI 3.x specifications by parsing JSON or YAML inputs to automatically create callable MCP tools for each REST API endpoint. This automated conversion significantly reduces manual coding effort and integration errors.

OpenAPI to MCP tool conversion handles REST API authentication by mapping common schemes like Bearer tokens and API Keys to environment variables. This approach securely injects credentials at runtime without hardcoding sensitive information into the generated server code.

Yes, you can create callable MCP tools from a YAML OpenAPI spec. The parser natively supports both JSON and YAML input formats, transforming REST API endpoints into executable Python functions while correctly mapping parameters and request bodies.

Python 3.10 or higher is required for running an MCP stdio server generated from OpenAPI. The code generation focuses on modern Python compatibility and relies on minimal external dependencies, primarily requiring PyYAML for parsing.

The best way to automate MCP tool creation for external REST APIs is providing an OpenAPI 3.x document to a code generation script. It instantly scaffolds a Python MCP stdio server, translating endpoints and parameters into ready-to-use tools for agentic workflows.