Puppeteer

Puppeteer

A Model Context Protocol server that provides browser automation capabilities using Puppeteer. This server enables LLMs to interact with web pages, take screenshots, and execute JavaScript in a real browser environment.

Components

Tools

• puppeteer_navigate

  • Navigate to any URL in the browser
  • Inputs:
    • url (string, required): URL to navigate to
    • launchOptions (object, optional): PuppeteerJS LaunchOptions. Default null. If changed and not null, browser restarts. Example: { headless: true, args: ['--user-data-dir="C:/Data"'] }
    • allowDangerous (boolean, optional): Allow dangerous LaunchOptions that reduce security. When false, dangerous args like --no-sandbox, --disable-web-security will throw errors. Default false.

• puppeteer_screenshot

  • Capture screenshots of the entire page or specific elements
  • Inputs:
    • name (string, required): Name for the screenshot
    • selector (string, optional): CSS selector for element to screenshot
    • width (number, optional, default: 800): Screenshot width
    • height (number, optional, default: 600): Screenshot height

• puppeteer_click

  • Click elements on the page
  • Input: selector (string): CSS selector for element to click

• puppeteer_hover

  • Hover elements on the page
  • Input: selector (string): CSS selector for element to hover

• puppeteer_fill

  • Fill out input fields
  • Inputs:
    • selector (string): CSS selector for input field
    • value (string): Value to fill

• puppeteer_select

  • Select an element with SELECT tag
  • Inputs:
    • selector (string): CSS selector for element to select
    • value (string): Value to select

• puppeteer_evaluate

  • Execute JavaScript in the browser console
  • Input: script (string): JavaScript code to execute

Resources

The server provides access to two types of resources:

1. Console Logs (console://logs)

   • Browser console output in text format
   • Includes all console messages from the browser

2. Screenshots (screenshot://<name>)

   • PNG images of captured screenshots
   • Accessible via the screenshot name specified during capture

Key Features

• Browser automation
• Console log monitoring
• Screenshot capabilities
• JavaScript execution
• Basic web interaction (navigation, clicking, form filling)
• Customizable Puppeteer launch options

Configuration to use Puppeteer Server

Here's the Claude Desktop configuration to use the Puppeter server:

Docker

NOTE The docker implementation will use headless chromium, where as the NPX version will open a browser window.

{
  "mcpServers": {
    "puppeteer": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "--init", "-e", "DOCKER_CONTAINER=true", "mcp/puppeteer"]
    }
  }
}

NPX

{
  "mcpServers": {
    "puppeteer": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-puppeteer"]
    }
  }
}

Launch Options

You can customize Puppeteer's browser behavior in two ways:

1. Environment Variable: Set PUPPETEER_LAUNCH_OPTIONS with a JSON-encoded string in the MCP configuration's env parameter:

   {
     "mcpServers": {
       "mcp-puppeteer": {
         "command": "npx",
         "args": ["-y", "@modelcontextprotocol/server-puppeteer"],
         "env": {
           "PUPPETEER_LAUNCH_OPTIONS": "{ \"headless\": false, \"executablePath\": \"C:/Program Files/Google/Chrome/Application/chrome.exe\", \"args\": [] }",
           "ALLOW_DANGEROUS": "true"
         }
       }
     }
   }
   

2. Tool Call Arguments: Pass launchOptions and allowDangerous parameters to the puppeteer_navigate tool:

   {
     "url": "https://example.com",
     "launchOptions": {
       "headless": false,
       "defaultViewport": {"width": 1280, "height": 720}
     }
   }
   

Build

Docker build:

docker build -t mcp/puppeteer -f src/puppeteer/Dockerfile .

License

This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.