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janwilmake/openapi-mcp-server

Connect any HTTP/REST API server using an Open API spec (v3)

Add to Claude Desktop config.json

{
  "mcpServers": {
    "janwilmake-openapi-mcp-server": {
      "command": "node",
      "args": [
        "~/.mcp/openapi-mcp-server/index.js"
      ]
    }
  }
}

OpenAPI MCP Server

janwilmake/openapi-mcp-server context

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)

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

Install OpenAPI MCP Server

For other clients, use MCP URL: https://openapi-mcp.openapisearch.com/mcp

Local testing

First run the server

wrangler dev

Then run the mcp inspector:

npx @modelcontextprotocol/inspector

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