Examine source code of CoinView

{
  "manifest_version": 3,
  "name": "Crypto Tracker",
  "version": "1.0",
  "description": "Tracks cryptocurrency prices.",
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "crypto-tracker-1721228473211@addon.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://api.coingecko.com/"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}