SearXNG + Crawl4AI MCP Server

A self-hosted MCP (Model Context Protocol) server providing fast search and reliable web scraping using SearXNG + Crawl4AI stack.

🚀 Why This Solution?

This project evolved from limitations found in self-hosted Firecrawl:

• ❌ Firecrawl's search API doesn't work in self-hosted mode

• ❌ Missing Fire-engine features in self-hosted version

• ❌ Authentication issues and poor documentation

Our solution provides:

• ✅ Truly self-hosted search via SearXNG (aggregates 70+ search engines)

• ✅ Superior scraping via Crawl4AI (50k+ GitHub stars)

• ✅ 3x faster than Claude Code native search tools

• ✅ 100% reliable vs failing native WebFetch

• ✅ Complete privacy - no external API dependencies

Related MCP server: SearxNG MCP Server

🏗️ Architecture

┌─────────────┐    ┌──────────────┐    ┌─────────────┐
│             │    │              │    │             │
│  SearXNG    │    │  Crawl4AI    │    │   Redis     │
│  (Search)   │    │  (Scraping)  │    │  (Cache)    │
│             │    │              │    │             │
│  Port 8081  │    │  Port 8001   │    │ Port 6380   │
└─────────────┘    └──────────────┘    └─────────────┘
        │                   │                   │
        └───────────────────┼───────────────────┘
                           │
                  ┌──────────────┐
                  │              │
                  │ MCP Server   │
                  │ (TypeScript) │
                  │              │
                  └──────────────┘
                           │
                    ┌─────────────┐
                    │             │
                    │ Claude Code │
                    │             │
                    └─────────────┘

📦 Features

• 🔍 Fast Search: SearXNG aggregates 70+ search engines (Google, Bing, DuckDuckGo, etc.)

• 🕷️ Advanced Scraping: Crawl4AI with Playwright for JavaScript-heavy sites

• ⚡ High Performance: Sub-second search, reliable scraping

• 🐳 Docker Ready: Complete Docker Compose orchestration

• 🔄 Proxy Support: Built-in rotating IP proxy integration

• 📊 MCP Integration: 3 powerful tools for Claude Code

• 🛡️ Privacy First: All processing happens locally

🚀 Quick Start

1. Clone and Setup

git clone https://github.com/yourusername/searxng-crawl4ai-mcp
cd searxng-crawl4ai-mcp
npm install
npm run build

2. Start Docker Services

# Start all services (SearXNG, Crawl4AI, Redis)
docker compose up -d

# Verify services are running
curl http://localhost:8081/search?q=test&format=json  # SearXNG
curl http://localhost:8001/health                      # Crawl4AI

3. Configure Claude Code MCP

Simple Configuration (No Proxy):

{
  "mcpServers": {
    "searxng-crawl4ai": {
      "command": "node",
      "args": ["fixed-mcp-server.js"],
      "cwd": "/absolute/path/to/your/project"
    }
  }
}

With Proxy Configuration:

{
  "mcpServers": {
    "searxng-crawl4ai": {
      "command": "node",
      "args": ["fixed-mcp-server.js"],
      "cwd": "/absolute/path/to/your/project",
      "env": {
        "PROXY_URL": "http://username:password@your-proxy-server.com:10000"
      }
    }
  }
}

4. Increase Token Limits (Recommended)

Create .claude/settings.json:

{
  "environmentVariables": {
    "MAX_MCP_OUTPUT_TOKENS": "100000"
  }
}

🛠️ Available MCP Tools

1. search_web - Lightning Fast Search

{
  "query": "latest AI developments 2025",
  "maxResults": 10
}

Returns: 30+ search results in <1 second from multiple engines

2. crawl4ai_scrape - Advanced Web Scraping

{
  "url": "https://finance.yahoo.com/quote/BTC-USD/",
  "formats": ["markdown"]
}

Returns: Full page content with metadata (title, word count, clean markdown)

3. search_and_scrape - Combined Power Workflow

{
  "query": "Bitcoin technical analysis September 2025",
  "maxResults": 2
}

Returns: Search results + scraped content from top URLs (complete market intelligence)

📊 Performance Benchmarks

🎯 Trading & Finance Use Cases

Perfect for traders and financial analysts:

• Real-time Price Data: Extract current Bitcoin, stock, forex prices with exact timestamps

• Technical Analysis: Get complete RSI, MACD, support/resistance data from TradingView

• Market Sentiment: Scrape Fear & Greed Index, VIX, sentiment indicators

• News Analysis: Get latest Fed decisions, earnings, economic data

• API Discovery: Extract trading APIs from financial websites

Example trading query:

Use search_and_scrape to find "Bitcoin RSI technical analysis September 2025"

Result: Complete professional trading analysis with specific price levels, technical indicators, and market predictions.

🔧 Configuration

Environment Variables

Docker Services

• SearXNG: Port 8081 - Metasearch engine

• Crawl4AI: Port 8001 - Web scraping service

• Redis: Port 6380 - Caching layer

🛡️ Security & Privacy

• ✅ No external API calls - everything runs locally

• ✅ Proxy support - hide your IP address

• ✅ Credential masking - sensitive data automatically masked in logs

• ✅ Self-hosted - complete control over your data

🆚 vs Alternatives

🚀 Advanced Usage

Proxy Configuration

# Set in .env file
PROXY_URL=http://username:password@proxy-server.com:10000

Multiple Search Engines

SearXNG automatically queries:

• Google, Bing, DuckDuckGo

• Startpage, Qwant, Yandex

• Wikipedia, GitHub, StackOverflow

• Academic sources (ArXiv, Google Scholar)

Custom Scraping Options

{
  "url": "https://example.com",
  "formats": ["markdown", "html", "links"],
  "wait_for": 2000,
  "timeout": 30000
}

🐛 Troubleshooting

Services Not Starting

docker compose logs searxng
docker compose logs crawl4ai

Port Conflicts

Edit docker-compose.yml to change ports:

• SearXNG: 8081 → your-port

• Crawl4AI: 8001 → your-port

• Redis: 6380 → your-port

MCP Connection Issues

1. Ensure all Docker services are running

2. Check absolute path in MCP configuration

3. Verify npm run build completed successfully

📄 License

MIT License - Feel free to use in your projects!

🤝 Contributing

Contributions welcome! Please read our contributing guidelines and submit pull requests.

⭐ Star This Repo

If this MCP server helps your workflow, please star the repository!

Built with ❤️ for the Claude Code community