What is the OpenAPI Gateway?

The OpenAPI Gateway transforms an OpenAPI specification into a Model Context Protocol (MCP) server, enabling Large Language Models (LLMs) to directly interact with and control your RESTful APIs.

How does OpenAPI Gateway facilitate LLM interaction with APIs?

It automatically parses your OpenAPI paths, registering each HTTP endpoint as a callable MCP tool. This allows MCP-aware LLMs (like AnythingLLM) to discover, understand, and execute API operations.

Can I secure my API calls through the Gateway?

Yes, it offers flexible authentication modes including none, basic, bearer token, custom header, and query parameters. You can also configure global default headers for consistent security and context.

What types of API inputs does it support?

The tool supports a wide range of API inputs, including path parameters, query parameters, request headers, and request bodies, ensuring comprehensive interaction with diverse API designs.

OpenAPI Gateway

Name: OpenAPI Gateway
Author: rykerwang

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Transforms an OpenAPI specification into a Model Context Protocol (MCP) server, enabling LLMs to interact with and control RESTful APIs.

This project automates the creation of a Model Context Protocol (MCP) server directly from any supplied OpenAPI specification. It effectively converts every HTTP endpoint defined within your `openapi.yaml` into a callable MCP tool, making it possible for Large Language Models (LLMs), such as those powering AnythingLLM, to understand, invoke, and control your existing RESTful systems. This streamlines the integration of AI agents with backend services, allowing LLMs to interact with applications through a structured and programmatic interface.

주요 기능

01Offers flexible authentication modes (none, basic, bearer, custom header, query) and global default headers

02Automatically parses OpenAPI paths to register matching MCP tools

03Provides structured logging to both console and file for enhanced LLM troubleshooting

04Supports diverse tool inputs including path parameters, query parameters, headers, and request bodies

05Exposes OpenAPI_GetSchema for inspecting `components.schemas`

062 GitHub stars

사용 사례

01Integrating existing RESTful APIs with AI agents that support the Model Context Protocol

02Enabling LLMs to directly control and automate actions within backend services defined by OpenAPI

03Simplifying the development of LLM-powered applications that interact with web services