Selenium MCP Server

Selenium MCP Server

A Model Context Protocol (MCP) server for browser automation using Selenium WebDriver. Enables LLMs and teams to automate browsers via a standard protocol, similar to Playwright MCP.

🚀 Key Features

• Multi-browser support (Chrome, Firefox, Edge, Safari)
• Team-friendly: visible browser by default
• MCP-compliant API (navigate, click, type, screenshot, etc.)
• Easy onboarding for teams and CI

📦 Exposing MCP Server for Team Usage

1. Publish to npm (for team-wide access)

• Ensure your package.json is correct (see below)
• Run:

npm publish --access public

• Or for private registry:

npm publish --access restricted

2. Install and Run (for any team)

Global install (recommended for teams)

npm install -g selenium-mcp-server
selenium-mcp-server --browser chrome

Or use npx (no install needed)

npx selenium-mcp-server@latest --browser chrome

3. Configure in MCP Client (e.g., Cursor, CI, or custom)

Add to your .cursor/mcp.json or equivalent:

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

• For CI, run the server as a background process and point clients to its port.

📝 Onboarding for New Teams

1. Install Node.js 18+ and Java 11+
2. Install the MCP server globally or use npx
3. Share the npm package name and README with your team
4. Provide example configs and usage (see above)
5. For support, use the GitHub repo issues page

Example package.json for Publishing

{
  "name": "selenium-mcp-server",
  "version": "1.0.0",
  "description": "Selenium MCP server for browser automation",
  "main": "index.js",
  "bin": { "selenium-mcp-server": "index.js" },
  "repository": { "type": "git", "url": "https://github.com/your-org/selenium-mcp-server.git" },
  "author": "Your Name",
  "license": "MIT"
}

📋 Available Tools

• browser_navigate - Navigate to any URL
• browser_snapshot - Get page accessibility snapshot with element references
• browser_click - Click on elements using references from snapshots
• browser_type - Type text into form fields with optional submission
• browser_wait_for - Wait for time, text to appear, or text to disappear
• browser_take_screenshot - Capture screenshots of the current page

🛠️ Installation & Setup

For Cursor Users

1. Add to Cursor Settings:

   • Go to Cursor Settings → MCP → Add new MCP Server
   • Name: selenium-mcp
   • Command type: command
   • Command: npx
   • Arguments: ["selenium-mcp-server@latest"]

2. Alternative JSON Configuration:

{
  "mcpServers": {
    "selenium-mcp": {
      "command": "npx",
      "args": ["selenium-mcp-server@latest"]
    }
  }
}

For Other MCP Clients

Use the same configuration pattern with your MCP client:

{
  "mcpServers": {
    "selenium-mcp": {
      "command": "npx",
      "args": ["selenium-mcp-server@latest"]
    }
  }
}

Alternative Installation Methods

npm install selenium-mcp-server

npm install -g selenium-mcp-server

Quick Start

🎯 Zero-Installation (Recommended)

1. Add Configuration

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

{
  "mcpServers": {
    "selenium": {
      "command": "npx",
      "args": [
        "selenium-mcp-server@latest",
        "--browser", "chrome"
      ]
    }
  }
}

2. Restart Cursor

• Quit Cursor completely
• Restart Cursor
• npx will automatically download and run the server

npm install selenium-mcp-server

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

npm install -g selenium-mcp-server

{
  "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 '[email protected]'"

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

References

• Playwright MCP
• npm Publishing Guide
• Model Context Protocol

For more, see CONTRIBUTING.md and TEAM_SETUP_GUIDE.md