BrowserCat MCP Server

BrowserCat MCP Server avatar

by browsercat

browsercatcloud-automationBrowser Automation

What is BrowserCat MCP Server

BrowserCat MCP Server

A Model Context Protocol server that provides browser automation capabilities using BrowserCat's cloud browser service. This server enables LLMs to interact with web pages, take screenshots, and execute JavaScript in a real browser environment without needing to install browsers locally.

Components

Tools

  • browsercat_navigate
    • Navigate to any URL in the browser
    • Input: url (string)
  • browsercat_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
  • browsercat_click
    • Click elements on the page
    • Input: selector (string): CSS selector for element to click
  • browsercat_hover
    • Hover elements on the page
    • Input: selector (string): CSS selector for element to hover
  • browsercat_fill
    • Fill out input fields
    • Inputs:
      • selector (string): CSS selector for input field
      • value (string): Value to fill
  • browsercat_select
    • Select an option from a dropdown menu
    • Inputs:
      • selector (string): CSS selector for select element
      • value (string): Value to select
  • browsercat_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

  • Cloud-based browser automation
  • No local browser installation required
  • Console log monitoring
  • Screenshot capabilities
  • JavaScript execution
  • Basic web interaction (navigation, clicking, form filling)

Configuration to use BrowserCat MCP Server

Environment Variables

The BrowserCat MCP server requires the following environment variable:

NPX Configuration

{
  "mcpServers": {
    "browsercat": {
      "command": "npx",
      "args": ["-y", "@browsercatco/mcp-server"],
      "env": {
        "BROWSERCAT_API_KEY": "your-api-key-here"
      }
    }
  }
}

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.

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Frequently Asked Questions

What is MCP?

MCP (Model Context Protocol) is an open protocol that standardizes how applications provide context to LLMs. Think of MCP like a USB-C port for AI applications, providing a standardized way to connect AI models to different data sources and tools.

What are MCP Servers?

MCP Servers are lightweight programs that expose specific capabilities through the standardized Model Context Protocol. They act as bridges between LLMs like Claude and various data sources or services, allowing secure access to files, databases, APIs, and other resources.

How do MCP Servers work?

MCP Servers follow a client-server architecture where a host application (like Claude Desktop) connects to multiple servers. Each server provides specific functionality through standardized endpoints and protocols, enabling Claude to access data and perform actions through the standardized protocol.

Are MCP Servers secure?

Yes, MCP Servers are designed with security in mind. They run locally with explicit configuration and permissions, require user approval for actions, and include built-in security features to prevent unauthorized access and ensure data privacy.