chromedp-mcp

chromedp-mcp

A Model Context Protocol (MCP) server that provides browser automation capabilities using chromedp. This server enables AI assistants to interact with web pages, manage browser instances, and perform various web automation tasks.

⚠️ Development Status

This project is currently under development. Some features may be incomplete, unstable, or contain bugs. Use with caution and please report any issues you encounter.

Features

• Multi-instance Chrome Management: Create and manage multiple Chrome browser instances with extensive configuration options (headless mode, security settings, performance optimization)
• Complete Page Navigation: Navigate to URLs, browser history navigation (back/forward)
• Element Interaction: Find, click, and interact with web page elements using various selectors
• Form Operations: Input text, set values directly
• Cookie Management: Set and manage browser cookies for session handling
• File Operations: Download files and images from web pages
• PDF Generation: Convert web pages or HTML content to PDF documents
• Keyboard Simulation: Send keyboard events, key combinations, and modifier keys with comprehensive key support
• Screen Capture: Take screenshots of web pages for visual analysis
• DOM Tree Extraction: Get clean DOM structures without scripts/styles for analysis

LLM Decision Support

chromedp-mcp provides web page information to LLMs, enabling AI to make decisions:

Visual Information

Provided through screenshot tool:

• Complete page screenshots: Actual visual representation of web pages including layout, colors, images
• Element positioning: LLMs can see exact positions and appearance of buttons, links, forms and other elements
• Page state identification: Detect loading states, popups, error messages and other visual indicators
• Responsive layout understanding: Comprehend page presentation across different viewport sizes

Structured Information

Provided through DOM-related tools:

• Clean DOM structure (get-all-elements): Pure HTML structure with scripts and styles removed
• Specific element details (select-element): Element tree structure at specified depth
• Text content extraction (get-element-withtext): Element information containing specific text
• Element attribute data: ID, class, data-* and other attribute values

Available Tools

For detailed tool specifications,and parameters, see Tools Specification

Instance Management

• create-chrome-instance - Create a new Chrome browser instance with extensive configuration options (headless mode, security settings, performance options)
• close - Close a specific Chrome browser instance

Page Navigation

• navigate - Navigate to a specified URL and return clean DOM structure
• navigate-back - Navigate to previous page in browser history
• navigate-forward - Navigate to next page in browser history

Element Operations

• get-element-withtext - Find and retrieve information about a specific element with text content
• get-all-elements - Get all elements of current page as clean DOM tree structure
• select-element - Select element by CSS selector and return clean DOM structure at specified depth
• click-element - Click on an element with support for different click types (left, right, double)

Visual Information Access

• screenshot - Capture screenshots of web pages for visual analysis and layout understanding

Input Operations

• send-key - Send keyboard input to specified elements
• set-value - Directly set the value of form elements
• key-event - Send specific keyboard events and combinations with modifier keys

Cookie Management

• set-cookie - Set HTTP cookies with full control over domain, path, security, and expiration settings

File Operations

• download-file - Download files by clicking download links or buttons
• download_image - Download images from URL or by selector

Document Generation

• generate_pdf - Generate PDF from HTML content or URL

Other

• tips - Important usage tips and best practices for Chrome automation tools (recommended to check first)

Requirements

• Chrome/Chromium Browser: Must be installed and accessible in system PATH
• Go: Version 1.19 or higher for building from source

Environment Configuration

The following environment variables can be configured for Chrome management:

Variable	Description	Default
CHROME_MAXIMUM_INSTANCE	Maximum concurrent Chrome instances	5
CHROME_TTL	Instance time-to-live in minutes	15
CHROME_EXE_TIMEOUT	Operation timeout in seconds	300

These can be configured through your MCP client configuration or environment variables.

Setup

1. Clone the repository:

git clone https://github.com/KePatrick/chromedp-mcp.git

cd chromedp-mcp

2. Build the project:

Windows

go build -o chromedp-mcp.exe .\cmd\chromedp-mcp\main.go

Linux/MacOs

go build -o chromedp-mcp ./cmd/chromedp-mcp/main.go

3. MCP Client Configuration

Configure your MCP-compatible client to use this server:

Basic Configuration:

{
  "mcpServers": {
    "chromedp-mcp": {
      "command": "/path/to/chromedp-mcp",
      "args": []
    }
  }
}

With Environment Variables:

{
  "mcpServers": {
    "chromedp-mcp": {
      "command": "/path/to/chromedp-mcp",
      "args": [],
      "env": {
        "CHROME_MAXIMUM_INSTANCE": "10",
        "CHROME_TTL": "30",
        "CHROME_EXE_TIMEOUT": "600"
      }
    }
  }
}

Important Notes

• Always close instances when done to free resources
• Respect website terms of service and robots.txt
• Some websites may have anti-automation measures