OpenAPI

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

Integrations

  • Supports converting OpenAPI specs to OpenAI tools format for integration with OpenAI models

  • Supports OpenAPI specifications defined in YAML format

OpenAPI MCP Server

A Model Context Protocol (MCP) server for Claude/Cursor that enables searching and exploring OpenAPI specifications through oapis.org.

The MCP works by applying a 3 step process :

  1. It figures out the openapi identifier you need
  2. It requests a summary of that in simple language
  3. It determines which endpoints you need, and checks out how exactly they work (again, in simple language)

Important

OpenAPI MCP has found a new owner and has been migrated from v1.2 to v2, which works different to the previous version. You can still access any version prior to v2.0.0 and their README is here

OpenAPI MCP v2 is a Work In Progress and focuses on exploration and providing context about APIs. It does not allow executing the endpoints as tools directly, as authentication isn't a solved problem with MCP yet. However, it's great for codegen!

Expect bugs. Open To Contributers, DM

Features

  • Get an overview of any OpenAPI specification
  • Retrieve details about specific API operations
  • Support for both JSON and YAML formats
  • Tested with Claude Desktop and Cursor

Installation

Run and follow instructions:

npx openapi-mcp-server init

Usage in Claude

Once installed, you can ask Claude to:

  • "Find information about the Stripe API"
  • "Explain how to use the GitHub API's repository endpoints"

Claude will use the MCP server to:

  1. First get an overview of the requested API
  2. Then retrieve specific operation details as needed

Requirements

  • Node.js >= 16.17.0
  • Claude Desktop, Cursor, or any other MCP client.

License

MIT

-
security - not tested
A
license - permissive license
-
quality - not tested

This tool creates a Model Context Protocol (MCP) server that acts as a proxy for any API that has an OpenAPI v3.1 specification. This allows you to use Claude Desktop to easily interact with both local and remote server APIs.

  1. Features
    1. Installation
      1. Usage in Claude
        1. Requirements
          1. License