firefox-devtools-mcp

Overview

This MCP server provides comprehensive tools for AI assistants to interact with Firefox browser through WebDriver BiDi protocol. It enables page navigation, element interaction, network monitoring, console logging, screenshot capture, and Firefox management capabilities. The server offers both headless and standard modes, with options to connect to existing Firefox instances. Mozilla provides detailed documentation with security considerations, especially regarding the use of dedicated browser profiles to prevent unintended access to personal data.

Try asking AI

After installing, here are 3 things you can ask your AI assistant:

• list_pages

  List all open pages in Firefox

  Try:List all open pagesTry:Show me all tabs
• select_page

  Select a specific page to interact with

  Try:Select the first pageTry:Switch to the tab with example.com
• navigate_page

  Navigate a page to a specific URL

  Try:Go to example.comTry:Navigate to https://google.com
• take_snapshot

  Take a snapshot of the current page state

  Try:Take a snapshot of the pageTry:Capture current page elements
• click_by_uid

  Click on an element by its unique identifier

  Try:Click the button with uid abc123Try:Click on the login button
• fill_by_uid

  Fill text into an input element by its unique identifier

  Try:Fill 'user@example.com' into the email fieldTry:Enter password into the input field
• list_network_requests

  List all network requests made by the page

  Try:Show me all network requestsTry:List all API calls
• get_network_request

  Get details of a specific network request by ID

  Try:Get details for request ID 123Try:Show me the request to api.example.com
• screenshot_page

  Take a screenshot of the entire page

  Try:Take a screenshot of the pageTry:Capture the current view
• list_console_messages

  List console messages from the page

  Try:Show me console messagesTry:List all logs
• evaluate_script

  Execute JavaScript in the page context

  Try:Get the page titleTry:Find all elements with class 'button'
• get_firefox_info

  Get information about the Firefox browser instance

  Try:Get Firefox version infoTry:Show browser details

Comparable tools

Installation

claude mcp add firefox-devtools npx firefox-devtools-mcp@latest

{
  "mcpServers": {
    "firefox-devtools": {
      "command": "npx",
      "args": ["-y", "firefox-devtools-mcp@latest", "--headless", "--viewport", "1280x720"],
      "env": {
        "START_URL": "about:home"
      }
    }
  }
}

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