Examine source code of BiteFight-Me.Cu.

{
  "manifest_version": 2,
  "name": "BiteFight-Me.Cu.",
  "version": "1.4",
  "description": "Blendet Event, Schattenfürst-Benachrichtigungen und die GameForge-Taskbar aus und lässt dich das Menü anpassen.",
  "content_scripts": [
    {
      "matches": [
        "https://*.bitefight.gameforge.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d4ff0e5b-ba58-4338-a6c2-98ee2ae83573}"
    }
  }
}