@Nxavis/Agent Browser

npm version License: MIT Node.js

A Model Context Protocol (MCP) server that provides browser automation capabilities through Vercel's agent-browser. This enables LLMs to interact with web pages using a fast Rust CLI with Node.js fallback.

Quick Start

# 1. Install agent-browser CLI
npm install -g agent-browser && agent-browser install

# 2. Add to Claude Desktop (or your MCP client)
npx @nxavis/agent-browser-mcp

Then use tools like browser_navigate, browser_click, browser_snapshot to control the browser from your AI agent.

Features

• AI-Optimized Browser Control - Semantic element locators using accessibility properties, text matching, and data attributes
• Session Isolation - Multiple isolated browser sessions with separate cookies, storage, and navigation history
• Comprehensive Automation - Navigation, form filling, clicking, scrolling, keyboard input, and more
• Data Extraction - Get text, HTML, attributes, accessibility snapshots, screenshots, and PDFs
• Cookie Management - Full control over browser cookies and storage
• JavaScript Execution - Run arbitrary scripts in the browser context
• Network Inspection - Monitor console messages and network requests

Installation

npm install @nxavis/agent-browser-mcp

Or run directly with npx:

npx @nxavis/agent-browser-mcp

Prerequisites

• Node.js 18 or newer
• agent-browser CLI installed:

# Install agent-browser globally
npm install -g agent-browser

# Download Chromium browser
agent-browser install

# On Linux, install system dependencies if needed:
# agent-browser install --with-deps

⚠️ Windows Note: agent-browser currently has known issues on Windows with native shells (PowerShell/CMD). For Windows users, we recommend using WSL (Windows Subsystem for Linux) until the upstream issue is resolved.

Configuration

Claude Desktop

Add to your claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": ["@nxavis/agent-browser-mcp"]
    }
  }
}

VS Code

Add to your VS Code settings (JSON):

{
  "mcp": {
    "servers": {
      "agent-browser": {
        "command": "npx",
        "args": ["@nxavis/agent-browser-mcp"]
      }
    }
  }
}

Antigravity

Add to your .mcp.json file in your project root or home directory:

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": ["@nxavis/agent-browser-mcp"]
    }
  }
}

Or use the global configuration at ~/.mcp.json:

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": ["@nxavis/agent-browser-mcp"],
      "env": {
        "AGENT_BROWSER_PATH": "/usr/local/bin/agent-browser"
      }
    }
  }
}

Custom agent-browser Path

If agent-browser is not in your PATH, specify its location:

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": ["@nxavis/agent-browser-mcp"],
      "env": {
        "AGENT_BROWSER_PATH": "/path/to/agent-browser"
      }
    }
  }
}

Available Tools

Navigation

• browser_navigate - Navigate to a URL
• browser_go_back - Navigate back in browser history
• browser_go_forward - Navigate forward in browser history
• browser_reload - Reload the current page

Interaction

• browser_click - Click on an element
• browser_fill - Fill a text input field
• browser_type - Type text character by character
• browser_hover - Hover over an element
• browser_scroll - Scroll the page or a specific element
• browser_select - Select an option from a dropdown
• browser_check - Check a checkbox or radio button
• browser_uncheck - Uncheck a checkbox
• browser_press - Press a keyboard key

Data Extraction

• browser_get_text - Get text content from an element or page
• browser_get_html - Get HTML content
• browser_get_attribute - Get an attribute value
• browser_get_url - Get the current page URL
• browser_get_title - Get the current page title
• browser_snapshot - Get accessibility tree snapshot

Session Management

• browser_new_session - Create a new isolated browser session
• browser_close_session - Close a browser session

Screenshots & PDF

• browser_screenshot - Take a screenshot
• browser_pdf - Generate a PDF of the current page

For a complete list of tools and their parameters, see the original documentation.

Development

# Clone the repository
git clone https://github.com/nxavis/agent-browser-mcp.git
cd agent-browser-mcp

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# Watch mode
npm run dev

License

MIT

Credits

This package is based on agent-browser-mcp by minhlucvan, adapted for the @nxavis ecosystem.