WebDriver MCP Server

Professional browser automation for Claude and Claude Code via the Model Context Protocol (MCP). Features enterprise-grade performance monitoring, multi-session support, and zero-latency driver management.

🚀 Quick Start with Claude

Prerequisites

Install WebDriver for your preferred browser:

# Chrome (recommended)
brew install chromedriver              # macOS
sudo apt install chromium-chromedriver # Ubuntu
choco install chromedriver            # Windows

# Firefox
brew install geckodriver               # macOS  
sudo apt install firefox-geckodriver   # Ubuntu
choco install geckodriver             # Windows

Installation

Option A: Download Pre-built Binary

# Linux
wget https://github.com/EmilLindfors/rust-browser-mcp/releases/latest/download/rust-browser-mcp-x86_64-unknown-linux-gnu.tar.gz
tar xzf rust-browser-mcp-x86_64-unknown-linux-gnu.tar.gz

# macOS (Intel)
wget https://github.com/EmilLindfors/rust-browser-mcp/releases/latest/download/rust-browser-mcp-x86_64-apple-darwin.tar.gz
tar xzf rust-browser-mcp-x86_64-apple-darwin.tar.gz

# macOS (Apple Silicon)
wget https://github.com/EmilLindfors/rust-browser-mcp/releases/latest/download/rust-browser-mcp-aarch64-apple-darwin.tar.gz
tar xzf rust-browser-mcp-aarch64-apple-darwin.tar.gz

# Windows: Download rust-browser-mcp-x86_64-pc-windows-msvc.zip and extract

Option B: Build from Source

git clone https://github.com/EmilLindfors/rust-browser-mcp.git
cd rust-browser-mcp
cargo build --release
# Binary will be at target/release/rust-browser-mcp

🎯 Using with Claude Desktop

Stdio Transport (Recommended)

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "webdriver": {
      "command": "/path/to/rust-browser-mcp",
      "args": ["--transport", "stdio", "--browser", "chrome"],
      "env": {
        "WEBDRIVER_HEADLESS": "true"
      }
    }
  }
}

Configuration Options:

{
  "mcpServers": {
    "webdriver": {
      "command": "/path/to/rust-browser-mcp", 
      "args": ["--transport", "stdio", "--browser", "firefox"],
      "env": {
        "WEBDRIVER_HEADLESS": "false",
        "WEBDRIVER_CONCURRENT_DRIVERS": "firefox,chrome",
        "WEBDRIVER_ENABLE_PERFORMANCE_MEMORY": "true"
      }
    }
  }
}

HTTP Transport (Remote Access)

1. Start the HTTP server:

./rust-browser-mcp --transport http --bind 0.0.0.0:8080 --no-auth

1. Configure Claude Desktop:

{
  "mcpServers": {
    "webdriver": {
      "command": "npx",
      "args": ["@modelcontextprotocol/server-http", "http://localhost:8080/mcp"]
    }
  }
}

💻 Using with Claude Code

Stdio Mode

# Add WebDriver MCP server
claude mcp add browser --env WEBDRIVER_HEADLESS=true -- /home/emil/webdriver-mcp/target/release/rust-browser-mcp --transport stdio --browser firefox --enable-performance-memory

# With multiple browsers
claude mcp add webdriver \
  --env WEBDRIVER_CONCURRENT_DRIVERS=firefox,chrome \
  --env WEBDRIVER_HEADLESS=true \
  -- /path/to/rust-browser-mcp --transport stdio

HTTP Mode

# Start the server
./rust-browser-mcp --transport http --bind 127.0.0.1:8080 --no-auth

# Add to Claude Code
claude mcp add webdriver --transport http http://localhost:8080/mcp

🌟 Example Usage with Claude

Once configured, you can ask Claude to:

Basic Automation

• "Take a screenshot of example.com"
• "Navigate to github.com and search for 'rust mcp'"
• "Click the first search result"
• "Fill out the contact form on this website with my information"

Advanced Testing

• "Run a performance test on this e-commerce site's checkout flow"
• "Monitor the memory usage while navigating through this single-page app"
• "Check the console logs for any JavaScript errors on this page"
• "Test how long this page takes to load and capture timing metrics"

Multi-Session Workflows

• "Open two browser sessions - one for testing and one for reference"
• "Use session 'firefox_test' to test the mobile view of this site"
• "Compare loading times between Chrome and Firefox"

🛠️ Available Tools

Navigation & Interaction

• navigate - Go to URL
• back, forward, refresh - Browser navigation
• click, send_keys, hover - Element interaction
• find_element, find_elements - Element location
• get_title, get_text, get_attribute - Information extraction
• screenshot - Capture page images
• execute_script - Run JavaScript

Advanced Features

• fill_and_submit_form - Automated form handling
• login_form - Smart login automation
• wait_for_element - Wait for dynamic content
• scroll_to_element - Smooth scrolling

Performance & Monitoring

• get_performance_metrics - Page load and resource timing
• monitor_memory_usage - JavaScript heap monitoring
• run_performance_test - Automated performance testing
• monitor_resource_usage - Network, FPS, CPU monitoring
• get_console_logs - JavaScript error detection

Session Management

• list_managed_drivers - View active browsers
• get_healthy_endpoints - Check driver health
• start_driver, stop_driver - Manual lifecycle control
• refresh_driver_health - Health check refresh

⚙️ Configuration

Command Line Options

# Basic usage
rust-browser-mcp --transport stdio --browser chrome

# HTTP server mode
rust-browser-mcp --transport http --bind 0.0.0.0:8080 --browser firefox

# Enable advanced features
rust-browser-mcp --browser chrome --enable-performance-memory --transport stdio

Options:

• --transport, -t: Transport mode (stdio or http)
• --browser, -b: Browser driver (chrome, firefox, edge)
• --bind: HTTP server address (default: 127.0.0.1:8080)
• --no-auth: Disable OAuth for HTTP mode
• --enable-performance-memory: Enable Chrome memory APIs

Environment Variables

# Browser configuration
export WEBDRIVER_PREFERRED_DRIVER="chrome"              # Default browser
export WEBDRIVER_HEADLESS="true"                        # Headless mode
export WEBDRIVER_CONCURRENT_DRIVERS="firefox,chrome"    # Auto-start multiple browsers

# Performance settings  
export WEBDRIVER_STARTUP_TIMEOUT_MS="15000"             # Driver startup timeout
export WEBDRIVER_ENABLE_PERFORMANCE_MEMORY="true"       # Chrome memory APIs
export WEBDRIVER_AUTO_START="true"                      # Auto-start drivers (default)

Browser-Specific Configuration

Chrome (with performance monitoring):

{
  "env": {
    "WEBDRIVER_PREFERRED_DRIVER": "chrome",
    "WEBDRIVER_HEADLESS": "true", 
    "WEBDRIVER_ENABLE_PERFORMANCE_MEMORY": "true"
  }
}

Firefox (with multiple drivers):

{
  "env": {
    "WEBDRIVER_PREFERRED_DRIVER": "firefox",
    "WEBDRIVER_CONCURRENT_DRIVERS": "firefox,chrome",
    "WEBDRIVER_HEADLESS": "false"
  }
}

🔧 Advanced Features

Multi-Session Support

• Concurrent Sessions: Run multiple browser instances simultaneously
• Session Isolation: Each session maintains separate cookies, localStorage
• Browser Preference: Use session IDs like firefox_session1, chrome_work
• Session Persistence: Sessions survive across multiple tool calls

Performance Monitoring

• Real-time Metrics: Page load times, resource loading, JavaScript execution
• Memory Tracking: Heap usage, garbage collection, memory leaks detection
• Network Analysis: Request timing, response sizes, failed requests
• User Experience: Frame rates, input responsiveness, paint timing

Health Management

• Proactive Monitoring: Automatic health checks for all drivers
• Self-Healing: Failed drivers automatically restart
• Load Balancing: Requests route to healthiest available driver
• Diagnostics: Detailed status reporting for troubleshooting

🚀 Enterprise Features

OAuth Authentication (HTTP Mode)

For production deployments:

# Start OAuth-protected server
./rust-browser-mcp --transport http --bind 0.0.0.0:3000

# Visit http://localhost:3000/oauth/authorize for setup

Docker Deployment

FROM rust:1.75 as builder
WORKDIR /app
COPY . .
RUN cargo build --release

FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y chromium-driver firefox-esr geckodriver
COPY --from=builder /app/target/release/rust-browser-mcp /usr/local/bin/
EXPOSE 8080
CMD ["rust-browser-mcp", "--transport", "http", "--bind", "0.0.0.0:8080"]

Monitoring & Logging

# Enable debug logging
RUST_LOG=debug ./rust-browser-mcp --transport stdio

# Performance monitoring
export WEBDRIVER_ENABLE_PERFORMANCE_MEMORY="true"
export RUST_LOG="rust_browser_mcp::performance=debug"

🤝 Examples & Use Cases

Web Testing

• "Test the checkout flow on this e-commerce site and measure performance"
• "Verify all links on this page work correctly"
• "Check if this form validates input properly"

Content Analysis

• "Extract all product prices from this category page"
• "Take screenshots of this page in different browser sizes"
• "Get the page load time for this news article"

Automation Workflows

• "Log into this admin panel and generate a report"
• "Monitor this dashboard for changes every 5 minutes"
• "Compare how this page renders in Chrome vs Firefox"

📚 API Reference

See examples/ directory for complete working examples:

• stdio_client.rs - Basic stdio usage
• http_client.rs - HTTP transport example
• oauth_demo_server.rs - OAuth-protected server
• advanced_monitoring.rs - Performance testing showcase

🔍 Troubleshooting

Common Issues

Driver not found:

# Install the WebDriver for your browser
brew install chromedriver  # macOS
sudo apt install chromium-chromedriver  # Ubuntu

Permission denied:

# Make binary executable
chmod +x rust-browser-mcp

Port already in use:

# Change the port
./rust-browser-mcp --transport http --bind 127.0.0.1:8081

Browser won't start:

# Check WebDriver installation
chromedriver --version
geckodriver --version

# Enable debug logging
RUST_LOG=debug ./rust-browser-mcp --transport stdio

Getting Help

• Check logs: Enable RUST_LOG=debug for detailed output
• Verify setup: Use example configurations from this README
• Test manually: Run cargo run --example stdio_client to test
• Check drivers: Ensure WebDriver binaries are in PATH and executable

📄 License

MIT License - see LICENSE for details.