api-mcp-server

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This is a Swagger/OpenAPI documentation retrieval tool based on MCP (Model Context Protocol). It can fetch and parse Swagger/OpenAPI documentation from specified URLs, intelligently clean and optimize the documentation to reduce token consumption, and provide it to intelligent IDEs (such as Cursor) in a standardized format. The tool supports multiple transport methods, making it easy for IDEs to retrieve and understand API documentation, enabling intelligent features such as interface suggestions, auto-completion, and code generation.

✨ Features

• Intelligent Document Processing

  • Fetch Swagger/OpenAPI documentation from remote URLs

  • Support for Swagger 2.0 and OpenAPI 3.x formats

  • Intelligent cleaning and optimization of document structure to reduce token consumption

  • Extract key API information including endpoints, parameters, response formats, etc.

• IDE-Friendly Design

  • Standardized API description format

  • Automatic generation of example requests and responses

  • Intelligent parameter hints and type inference

  • Support for code auto-completion and generation

• Multiple Transport Methods

  • stdio: Standard input/output mode for command-line tools

  • http: HTTP server mode with RESTful interface support

  • sse: Server-Sent Events mode for real-time communication

Related MCP server: Swagger Navigator MCP Server

Getting Started

MacOS / Linux

{
  "mcpServers": {
    "api-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "api-mcp-server",
        "--transport",
        "stdio",
        "--doc-url",
        "xxx"
      ]
    }
  }
}

Windows

{
  "mcpServers": {
    "api-mcp-server": {
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "-y",
        "api-mcp-server",
        "--transport",
        "stdio",
        "--doc-url",
        "xxx"
      ]
    }
  }
}

Command Line Arguments

• --transport <stdio|http|sse>: Choose transport method (default: stdio)

• --port <number>: HTTP/SSE server port (default: 3000)

• --doc-url <url>: Swagger/OpenAPI documentation URL (required)

Usage Examples

1. Basic Usage

# Using stdio mode (default)
npx -y api-mcp-server --doc-url https://api.example.com/swagger.json

# Using HTTP mode
npx -y api-mcp-server --transport http --doc-url https://api.example.com/swagger.json

# Using SSE mode with custom port
npx -y api-mcp-server --transport sse --port 3001 --doc-url https://api.example.com/swagger.json

💻 Development

# Clone the repository
git clone https://github.com/bluechenchenchen/api-mcp-server.git

# Install dependencies
pnpm install

# Run in development mode
pnpm dev

# Build
pnpm build

Debugging

Use @modelcontextprotocol/inspector

npx @modelcontextprotocol/inspector

Run Example

pnpm example

📋 Requirements

• Node.js >= 16.0.0

• npm >= 6.0.0 or pnpm >= 6.0.0

📄 License

MIT