GoDuckDuckGo

A Model Context Protocol (MCP) server for DuckDuckGo Search, written in Go.

Features

• Native Go implementation
• Low resource usage
• SSE (Server-Sent Events) Transport Support
• DNS over HTTPS support for reliable connectivity
• Advanced search operators supported
• Rate limiting to prevent IP blocking

Installation

Requirements: Go 1.21+

go build -ldflags="-s -w" -o GoDuckDuckGo main.go

SSE Mode

Run with the -addr flag to start an SSE server:

./GoDuckDuckGo -addr :8080

This will start an SSE server on port 8080. The server exposes:

• /sse: SSE endpoint
• /messages: POST endpoint for client messages

Usage

Add the following to your mcp.json configuration:

{
    "mcpServers": {
        "go-ddg": {
            "command": "/absolute/path/to/GoDuckDuckGo",
            "args": []
        }
    }
}

Tools

search

Search DuckDuckGo.

Parameters:

• query (string): Search terms
• max_results (number): Default 10
• safe_search (string): strict, moderate (default), or off

fetch_content

Fetch and clean webpage content.

Parameters:

• url (string): URL to fetch