Examine source code of Enefits: Open Rewards

{
  "name": "Enefits: Open Rewards",
  "description": "Unlock badges and get rewarded for visiting your favorite sites.",
  "version": "1.0.3",
  "manifest_version": 3,
  "icons": {
    "48": "/img/enefits_48.png",
    "128": "/img/enefits_128.png"
  },
  "action": {
    "default_icon": {
      "48": "/img/enefits_48.png",
      "128": "/img/enefits_128.png"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "*.png",
        "*.jpg",
        "*.gif",
        "*.eot",
        "*.eot#iefix",
        "*.ttf",
        "*.woff",
        "*.svg",
        "*.js",
        "*.css",
        "*.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extension-enefits-ff3@enefits.co",
      "strict_min_version": "88.0"
    }
  }
}