mcp-rest-api

This MCP server provides a REST API tester tool that can be invoked from Claude, Cline, or other MCP clients. It enables you to execute HTTP requests (GET, POST, PUT, DELETE, PATCH) against any REST API endpoint and receive detailed response data including status, headers, and body. The server supports multiple authentication methods (Basic, Bearer, and API Key) and allows you to set global and per-request headers, as well as control SSL verification and response size limits. To use it with Cline, configure an MCP entry named rest-api that launches the server via npx dkmaker-mcp-rest-api and pass environment variables for authentication, base URL, and header configuration. Typical usage is to call test_request with a method and endpoint, optionally including a request body and custom headers, and then inspect the returned response structure for status, headers, and body content.

Prerequisites:

• Node.js and npm installed on your system
• Internet access to fetch the MCP server package

Install globally (recommended):

npm install -g dkmaker-mcp-rest-api

Verify installation:

dkmaker-mcp-rest-api --version

Integrate with MCP client (example using npx):

npx -y dkmaker-mcp-rest-api

If you are configuring via Cline on macOS, you can also install with npx in the MCP settings as shown in the README:

{
  "mcpServers": {
    "rest-api": {
      "command": "npx",
      "args": ["-y", "dkmaker-mcp-rest-api"],
      "env": {
        "REST_BASE_URL": "https://api.example.com",
        "AUTH_BASIC_USERNAME": "your-username",
        "AUTH_BASIC_PASSWORD": "your-password",
        "REST_ENABLE_SSL_VERIFY": "true"
      }
    }
  }
}

Environment variables are used to configure authentication, request headers, and SSL behavior. Only configure one authentication method at a time (Basic, Bearer, or API Key). If you encounter SSL certificate issues with self-signed certificates, set REST_ENABLE_SSL_VERIFY to false. The REST_RESPONSE_SIZE_LIMIT controls how much response data is returned before truncation; adjust as needed for large payloads. When testing locally, ensure REST_BASE_URL points to the target API and that authentication credentials are kept secure. If you update settings, restart the MCP server to apply changes.