Examine source code of Buxenger

{
  "manifest_version": 3,
  "name": "Buxenger",
  "version": "5.0.0.16",
  "description": "Your Personal Crypto Faucet Assistant",
  "browser_specific_settings": {
    "gecko": {
      "id": "{59cb5081-3cdf-4d38-a4c4-0eb8d2e4d9e0}"
    }
  },
  "action": {
    "default_icon": {
      "16": "images/logo.16.png",
      "48": "images/logo.48.png",
      "128": "images/logo.128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "scripts/appAPI.js",
        "scripts/messenger.js",
        "scripts/content.js"
      ],
      "all_frames": true
    },
    {
      "matches": [
        "http://localhost:3000/*",
        "https://app.buxenger.com/*"
      ],
      "js": [
        "scripts/appAPI.js",
        "scripts/messenger.js",
        "scripts/extension-content.js"
      ],
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "scripts/link-picker.js",
        "scripts/link-viewer.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "storage",
    "scripting",
    "activeTab",
    "alarms",
    "offscreen",
    "notifications",
    "background",
    "webNavigation"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "service_worker": "scripts/background.js",
    "scripts": [
      "scripts/background.js"
    ]
  }
}