Examine source code of EtherTrace

{
  "manifest_version": 3,
  "name": "EtherTrace",
  "version": "1.0",
  "description": "Cursor trails bloom into fractal trees; click to seed poetic network data.",
  "icons": {
    "64": "icon.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "https://worldtimeapi.org/*",
    "https://api.quotable.io/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "ethertrace@unique.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}