HTTP Client MCP Server

A comprehensive MCP server for making HTTP requests with all HTTP methods. Provides tools for GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS and custom HTTP methods with full request/response handling.

Features

• Universal HTTP request tool supporting all methods
• Simplified GET and POST convenience methods
• Configurable default headers for all requests
• Complete request/response details including status, headers, and body
• Support for query parameters, custom headers, and authentication
• Request timeout and redirect handling
• JSON and plain text response parsing
• Comprehensive error handling

Tools Available

http_request

Universal HTTP client supporting all methods (GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS, etc.).

Example:

{
  "url": "https://api.example.com/users",
  "method": "POST",
  "headers": {"Authorization": "Bearer token123"},
  "body": "{\"name\": \"John\", \"email\": \"john@example.com\"}",
  "query_params": {"format": "json"}
}

http_get

Simplified GET request method for fetching data from APIs and web endpoints.

Example:

{
  "url": "https://jsonplaceholder.typicode.com/posts/1",
  "headers": {"Accept": "application/json"},
  "query_params": {"_format": "json"}
}

http_post

Simplified POST request method for sending data to servers with automatic Content-Type handling.

Example:

{
  "url": "https://api.example.com/posts",
  "data": "{\"title\": \"Hello World\", \"body\": \"This is a test post\"}",
  "content_type": "application/json",
  "headers": {"Authorization": "Bearer token123"}
}

set_default_headers

Configure default headers that will be included in all subsequent HTTP requests.

Example:

{
  "headers": {
    "Authorization": "Bearer your-api-key",
    "User-Agent": "MyApp/1.0"
  },
  "merge": true
}

Installation

npm install

Usage

With MCP Inspector

npm run inspector

With Claude Desktop

Add to your Claude Desktop config:

{
  "mcpServers": {
    "http-client": {
      "command": "node",
      "args": ["[absolute-path-to-directory]/server.js"]
    }
  }
}

Requirements

• Node.js 18+
• @modelcontextprotocol/sdk ^0.5.0

Structure

• server.js - Main MCP server implementation
• package.json - Node.js package configuration
• README.md - Documentation
• description.md - Brief server description

Testing

The server has been tested with:

• GET requests to public APIs
• POST requests with JSON and form data
• Custom headers and authentication
• Query parameter handling
• Error scenarios and timeout handling
• Default header configuration

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