Selenium MCP Server

A Model Context Protocol (MCP) server that provides browser automation capabilities using Selenium WebDriver. This server enables LLMs to interact with web pages through structured accessibility snapshots and browser automation tools.

Features

• 🌐 Multi-browser support: Chrome, Firefox, Edge, Safari
• 🤖 LLM-friendly: Provides structured accessibility snapshots for LLMs
• 🔧 Comprehensive tools: Navigate, click, type, screenshot, and more
• 📱 Tab management: Open, close, and switch between browser tabs
• 🎯 Element interaction: Click, hover, drag, type into elements
• 📸 Screenshots and PDFs: Capture page content
• ⚡ Fast and reliable: Built on Selenium WebDriver

Installation

Method 1: Local Installation (Recommended - Like Playwright MCP)

npm install selenium-mcp-server

Method 2: Global Installation

npm install -g selenium-mcp-server

Quick Start

Option A: Local Installation (Like Microsoft's Playwright MCP)

1. Install in your project

npm install selenium-mcp-server

2. Configure Cursor

Create .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "selenium": {
      "command": "node",
      "args": ["./node_modules/selenium-mcp-server/dist/index.js", "--browser", "chrome", "--headless"]
    }
  }
}

Option B: Global Installation

1. Install globally

npm install -g selenium-mcp-server

2. Configure Cursor

Add to your Cursor MCP configuration (~/.cursor/mcp.json):

{
  "mcpServers": {
    "selenium": {
      "command": "selenium-mcp",
      "args": ["--browser", "chrome", "--headless"]
    }
  }
}

3. Use in Cursor

Ask Cursor to perform browser automation:

• "Navigate to google.com and take a screenshot"
• "Fill out the contact form on example.com"
• "Extract all links from the current page"

Configuration Options

selenium-mcp [options]

Options:
  --browser <browser>        Browser to use (chrome, firefox, edge, safari) (default: "chrome")
  --headless                 Run browser in headless mode
  --executable-path <path>   Path to browser executable
  --user-data-dir <path>     Path to user data directory
  --isolated                 Keep browser profile in memory
  --viewport-size <size>     Browser viewport size (e.g., 1280,720)
  --output-dir <path>        Path to directory for output files
  -h, --help                 Display help for command

Available Tools

Navigation

• browser_navigate - Navigate to URLs
• browser_navigate_back - Go back in history
• browser_navigate_forward - Go forward in history

Page Interaction

• browser_click - Click on elements
• browser_type - Type text into inputs
• browser_hover - Hover over elements
• browser_drag - Drag and drop elements
• browser_select_option - Select dropdown options
• browser_press_key - Press keyboard keys

Information Gathering

• browser_snapshot - Capture accessibility tree
• browser_take_screenshot - Take screenshots
• browser_network_requests - List network requests
• browser_console_messages - Get console messages

Tab Management

• browser_tab_list - List open tabs
• browser_tab_new - Open new tabs
• browser_tab_select - Switch tabs
• browser_tab_close - Close tabs

Utilities

• browser_wait_for - Wait for elements/text
• browser_file_upload - Upload files
• browser_handle_dialog - Handle alerts/dialogs
• browser_resize - Resize browser window
• browser_pdf_save - Save page as PDF

Usage Examples

Basic Navigation and Screenshot

// In Cursor, ask:
"Navigate to https://example.com and take a screenshot"

Form Interaction

// In Cursor, ask:
"Go to the contact page and fill out the form with name 'John Doe' and email 'john@example.com'"

Data Extraction

// In Cursor, ask:
"Visit the product page and extract all product names and prices"

Requirements

• Node.js 18+
• Java 11+ (for Selenium WebDriver)
• Browser drivers (automatically managed by WebDriverManager)

Configuration Examples

Local Development

{
  "mcpServers": {
    "selenium": {
      "command": "selenium-mcp",
      "args": ["--browser", "chrome"]
    }
  }
}

Headless Production

{
  "mcpServers": {
    "selenium": {
      "command": "selenium-mcp",
      "args": [
        "--browser", "chrome",
        "--headless",
        "--viewport-size", "1920,1080"
      ]
    }
  }
}

Custom Browser Path

{
  "mcpServers": {
    "selenium": {
      "command": "selenium-mcp",
      "args": [
        "--browser", "chrome",
        "--executable-path", "/path/to/chrome"
      ]
    }
  }
}

Troubleshooting

Browser Not Found

If you get browser not found errors:

1. Install the browser (Chrome, Firefox, etc.)
2. Use --executable-path to specify browser location
3. Check that Java is installed and accessible

Permission Issues

On macOS, you might need to grant accessibility permissions:

1. Go to System Preferences > Security & Privacy > Privacy
2. Select "Accessibility"
3. Add your terminal application

Memory Issues

For large pages or long-running sessions:

{
  "mcpServers": {
    "selenium": {
      "command": "selenium-mcp",
      "args": ["--isolated", "--headless"]
    }
  }
}

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests
5. Submit a pull request

License

MIT License - see LICENSE file for details.

Related Projects

• Playwright MCP - Similar server using Playwright
• Model Context Protocol - The protocol specification
• Selenium WebDriver - The underlying browser automation framework