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mozilla/firefox-devtools-mcp

mozilla/firefox-devtools-mcp

@mozilla

Model Context Protocol server for Firefox DevTools - enables AI assistants to inspect and control Firefox browser through the Remote Debugging Protocol

firefoxdevtoolsbrowser-automationwebdriver-bidiseleniumtestingmozillaautomation

Installation & Configuration

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

Information

Transport
stdio
Language
TypeScript
Created
2026/6/25
Updated
2026/6/26
Homepage
https://github.com/mozilla/firefox-devtools-mcp