MCP Selenium Server

A Model Context Protocol (MCP) server implementation for Selenium WebDriver, allowing AI agents to control web browsers.

Installation

npm install -g @angiejones/mcp-selenium

Usage

Start the server by running:

mcp-selenium

Or use with NPX in your MCP configuration:

{
  "mcpServers": {
    "selenium": {
      "command": "npx",
      "args": [
        "-y",
        "@angiejones/mcp-selenium"
      ]
    }
  }
}

Tools

start_browser

Launches a browser session.

Parameters:

• browser (required): Browser to launch
  • Type: string
  • Enum: ["chrome", "firefox"]
• options: Browser configuration options
  • Type: object
  • Properties:
    • headless: Run browser in headless mode
      • Type: boolean
    • arguments: Additional browser arguments
      • Type: array of strings

Example:

{
  "tool": "start_browser",
  "parameters": {
    "browser": "chrome",
    "options": {
      "headless": true,
      "arguments": ["--no-sandbox"]
    }
  }
}

navigate

Navigates to a URL.

Parameters:

• url (required): URL to navigate to
  • Type: string

Example:

{
  "tool": "navigate",
  "parameters": {
    "url": "https://www.example.com"
  }
}

find_element

Finds an element on the page.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "find_element",
  "parameters": {
    "by": "id",
    "value": "search-input",
    "timeout": 5000
  }
}

click_element

Clicks an element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "click_element",
  "parameters": {
    "by": "css",
    "value": ".submit-button"
  }
}

send_keys

Sends keys to an element (typing).

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• text (required): Text to enter into the element
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "send_keys",
  "parameters": {
    "by": "name",
    "value": "username",
    "text": "testuser"
  }
}

get_element_text

Gets the text() of an element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "get_element_text",
  "parameters": {
    "by": "css",
    "value": ".message"
  }
}

hover

Moves the mouse to hover over an element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "hover",
  "parameters": {
    "by": "css",
    "value": ".dropdown-menu"
  }
}

drag_and_drop

Drags an element and drops it onto another element.

Parameters:

• by (required): Locator strategy for source element
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the source locator strategy
  • Type: string
• targetBy (required): Locator strategy for target element
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• targetValue (required): Value for the target locator strategy
  • Type: string
• timeout: Maximum time to wait for elements in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "drag_and_drop",
  "parameters": {
    "by": "id",
    "value": "draggable",
    "targetBy": "id",
    "targetValue": "droppable"
  }
}

double_click

Performs a double click on an element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "double_click",
  "parameters": {
    "by": "css",
    "value": ".editable-text"
  }
}

right_click

Performs a right click (context click) on an element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "right_click",
  "parameters": {
    "by": "css",
    "value": ".context-menu-trigger"
  }
}

press_key

Simulates pressing a keyboard key.

Parameters:

• key (required): Key to press (e.g., 'Enter', 'Tab', 'a', etc.)
  • Type: string

Example:

{
  "tool": "press_key",
  "parameters": {
    "key": "Enter"
  }
}

upload_file

Uploads a file using a file input element.

Parameters:

• by (required): Locator strategy
  • Type: string
  • Enum: ["id", "css", "xpath", "name", "tag", "class"]
• value (required): Value for the locator strategy
  • Type: string
• filePath (required): Absolute path to the file to upload
  • Type: string
• timeout: Maximum time to wait for element in milliseconds
  • Type: number
  • Default: 10000

Example:

{
  "tool": "upload_file",
  "parameters": {
    "by": "id",
    "value": "file-input",
    "filePath": "/path/to/file.pdf"
  }
}

take_screenshot

Captures a screenshot of the current page.

Parameters:

• outputPath (optional): Path where to save the screenshot. If not provided, returns base64 data.
  • Type: string

Example:

{
  "tool": "take_screenshot",
  "parameters": {
    "outputPath": "/path/to/screenshot.png"
  }
}

Supported Browsers

• Chrome
• Firefox

Features

• Start browser sessions with customizable options
• Navigate to URLs
• Find elements using various locator strategies
• Click, type, and interact with elements
• Perform mouse actions (hover, drag and drop)
• Handle keyboard input
• Take screenshots
• Upload files
• Support for headless mode

Development

To work on this project:

1. Clone the repository
2. Install dependencies: npm install
3. Run the server: npm start

License

MIT