Overview
OpenAPI MCP Server is 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 three-step process: 1) It figures out the OpenAPI identifier you need, 2) It requests a summary of that in simple language, and 3) It determines which endpoints you need, and checks out how exactly they work (again, in simple language). The server provides an overview of any OpenAPI specification, retrieves details about specific API operations, and supports both JSON and YAML formats. It has been tested with Claude Desktop and Cursor. For testing and usage, you can run the server locally (wrangler dev) and then inspect with the MCP inspector (npx @modelcontextprotocol/inspector). Installation for external clients is available at the MCP URL: https://openapi-mcp.openapisearch.com/mcp.
Features
Three-step MCP processing
Follows a three-step workflow: identify the needed OpenAPI spec, generate a plain-language summary, and select and explain the relevant endpoints.
Overview of OpenAPI specifications
Provides an easy-to-understand overview of any OpenAPI specification.
Details on API operations
Retrieves and explains details about specific API operations within the OpenAPI spec.
Format support
Supports both JSON and YAML formats for OpenAPI data.
Client compatibility
Demonstrated compatibility and testing with Claude Desktop and Cursor.
Who Is This For?
- Developers:Use to search and explore OpenAPI specs via MCP in Claude/Cursor.
- AI assistants:Enable Claude/Cursor to summarize and explain API endpoints for developers.
