Examine source code of AllowanceGuard

{
  "manifest_version": 3,
  "name": "AllowanceGuard — Wallet Protection",
  "version": "2.0.2",
  "description": "Pre-transaction protection: detect risky approve(), permit(), and setApprovalForAll() calls before you sign",
  "browser_specific_settings": {
    "gecko": {
      "id": "allowanceguard@allowanceguard.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent",
          "websiteActivity",
          "financialAndPaymentInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://*.allowanceguard.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "AllowanceGuard",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  }
}