mcp-openapi

A Model Context Protocol (MCP) server that loads and serves multiple OpenAPI specifications to enable LLM-powered IDE integrations. This server acts as a bridge between your OpenAPI specifications and LLM-powered development tools like Cursor and other code editors.

• Loads multiple OpenAPI specifications from a directory
• Exposes API operations and schemas through MCP protocol
• Enables LLMs to understand and work with your APIs directly in your IDE
• Supports dereferenced schemas for complete API context
• Maintains a catalog of all available APIs

This open-source MCP server is sponsored by ReAPI, a next-generation API platform that simplifies API design and testing. While this server provides local OpenAPI integration for development, ReAPI offers two powerful modules:

• Design APIs using an intuitive no-code editor
• Generate and publish OpenAPI specifications automatically
• Collaborate with team members in real-time
• Version control and change management

• The most developer-friendly no-code API testing solution
• Create and manage test cases with an intuitive interface
• Powerful assertion and validation capabilities
• Serverless cloud test executor
• Perfect for both QA teams and developers
• CI/CD integration ready

Try ReAPI for free at reapi.com and experience the future of API development.

To integrate the MCP OpenAPI server with Cursor IDE, you have two options for configuration locations:

Create a .cursor/mcp.json file in your project directory. This option is recommended as it allows you to maintain different sets of specs for different projects

{
  "mcpServers": {
    "@reapi/mcp-openapi": {
      "command": "npx",
      "args": ["-y", "@reapi/mcp-openapi@latest", "--dir", "./specs"],
      "env": {