OpenAPI Proxy

About

The OpenAPI Proxy project enables users to effortlessly transform any OpenAPI specification into a comprehensive MCP server. By building on FastMCP, it provides a robust, configurable runtime that supports various authentication methods, including bearer tokens, API keys, and basic auth. Its modular design allows for clear separation of concerns, offering extensible defaults for base URLs, headers, and authentication schemes, all while leveraging an asynchronous HTTP client for efficient communication with upstream platforms.

Key Features

• Async HTTP client factory with configurable timeouts, retries, and default headers.
• Modular core for configuration, spec loading, authentication, HTTP client creation, and server orchestration.
• Configurable runtime merging command-line flags, environment variables, and config files.
• Extensible authentication with built-in support for bearer tokens, API keys, custom headers, and basic auth.
• Extensible defaults for base URLs, headers, and authentication schemes without modifying core runtime.
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Use Cases

• Embed a fully functional MCP server directly within a Python project.
• Serve any OpenAPI specification as an MCP server from the command line.
• Integrate external APIs defined by OpenAPI into desktop applications using MCP.