DuckDuckGo
A free and unlimited web search server that enables AI models to search, crawl, and research web content using DuckDuckGo without requiring API keys. It features parallel crawling and a smart ranking system to prioritize the most relevant information
What is DuckDuckGo?
DuckDuckGo is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to free and unlimited web search server that enables ai models to search, crawl, and research web content using duckduckgo without requiring api keys. it features parallel crawling and a smart ranking sy...
A free and unlimited web search server that enables AI models to search, crawl, and research web content using DuckDuckGo without requiring API keys. It features parallel crawling and a smart ranking system to prioritize the most relevant information
This server falls under the Search & Data Extraction category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A free and unlimited web search server that enables AI model
Use Cases
Maintainer
Works with
Installation
NPM
npx -y duckduckgo-mcp-serverManual Installation
npx -y duckduckgo-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use DuckDuckGo
DuckDuckGo MCP Server gives AI models free, unlimited web search and webpage content retrieval through DuckDuckGo, requiring absolutely no API keys or account sign-ups. It exposes two MCP tools — a search tool that queries DuckDuckGo and returns ranked results, and a fetch tool that retrieves full page text from any URL — making it ideal for grounding AI responses in current web content. The server includes built-in rate-limit protection, configurable SafeSearch filtering, and optional TLS impersonation via curl_cffi for sites that block standard HTTP clients.
Prerequisites
- Python 3.10+ and uv or pip installed
- No API keys required — DuckDuckGo search is free and unlimited
- An MCP-capable client such as Claude Desktop, Claude Code, or any MCP-compatible tool
Install the server
The recommended installation method is via uv (uvx for zero-install execution) or pip. Install the optional browser backend if you encounter bot-detection issues on certain sites.
# Zero-install run via uvx
uvx duckduckgo-mcp-server
# Or install via pip/uv
uv pip install duckduckgo-mcp-server
# With optional browser backend for bypassing bot detection
uv pip install "duckduckgo-mcp-server[browser]"Configure Claude Desktop
Add the server entry to your claude_desktop_config.json. Use DDG_SAFE_SEARCH and DDG_REGION environment variables to control filtering and locale. SafeSearch can be STRICT, MODERATE, or OFF.
{
"mcpServers": {
"duckduckgo": {
"command": "uvx",
"args": ["duckduckgo-mcp-server"],
"env": {
"DDG_SAFE_SEARCH": "MODERATE",
"DDG_REGION": "us-en"
}
}
}
}Restart your MCP client
Quit and reopen Claude Desktop (or reload the MCP host) so it starts the DuckDuckGo server process. The search and fetch tools will appear once the server is running.
Test the search tool
Ask your AI assistant to search for something current. The search tool accepts a query, optional max_results (default 10), and an optional region override.
DuckDuckGo Examples
Client configuration
Claude Desktop config entry for DuckDuckGo MCP Server with SafeSearch and US English region settings.
{
"mcpServers": {
"duckduckgo": {
"command": "uvx",
"args": ["duckduckgo-mcp-server"],
"env": {
"DDG_SAFE_SEARCH": "MODERATE",
"DDG_REGION": "us-en"
}
}
}
}Prompts to try
Example prompts that exercise both the search and content-fetch capabilities of the server.
- "Search the web for the latest news on Model Context Protocol and summarize the top 5 results"
- "Find recent benchmarks comparing Claude and GPT-4o, then fetch and summarize the first result"
- "Search DuckDuckGo for 'Python async best practices 2025' and list the main recommendations"
- "Fetch the content of https://modelcontextprotocol.io and give me an overview of the page"
- "Search for 'open source MCP servers' and tell me which repositories have the most stars"Troubleshooting DuckDuckGo
Search returns no results or throws a rate-limit error
The server has built-in rate-limit protection, but heavy usage may still trigger DuckDuckGo throttling. Reduce request frequency or add a short delay between searches. The [browser] extra (curl_cffi) can help bypass some blocks.
Content fetch tool fails on certain websites
Some sites block standard httpx clients. Install the browser backend with 'uv pip install duckduckgo-mcp-server[browser]' and set the --fetch-backend flag to 'curl' or 'auto' in your server args to enable TLS impersonation.
uvx command not found
Install uv first with 'pip install uv' or via the official installer at astral.sh/uv. Alternatively, install the package directly with 'pip install duckduckgo-mcp-server' and use 'duckduckgo-mcp-server' as the command.
Frequently Asked Questions about DuckDuckGo
What is DuckDuckGo?
DuckDuckGo is a Model Context Protocol (MCP) server that free and unlimited web search server that enables ai models to search, crawl, and research web content using duckduckgo without requiring api keys. it features parallel crawling and a smart ranking system to prioritize the most relevant information It connects AI assistants to external tools and data sources through a standardized interface.
How do I install DuckDuckGo?
Install via npm with the command: npx -y duckduckgo-mcp-server. Then add the server configuration to your AI client's JSON config file (e.g., claude_desktop_config.json or .cursor/mcp.json).
Which AI clients work with DuckDuckGo?
DuckDuckGo works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is DuckDuckGo free to use?
Yes, DuckDuckGo is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
DuckDuckGo Alternatives — Similar Search & Data Extraction Servers
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Xiaohongshu
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Browse More Search & Data Extraction MCP Servers
Explore all search & data extraction servers available in the MCPgee directory. Each server includes setup guides for Claude, Cursor, and VS Code.
Set Up DuckDuckGo in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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