Examine source code of CardBook

{
  "name": "__MSG_extName__",
  "version": "105.9",
  "description": "__MSG_extDesc__",
  "author": "Philippe VIGNEAU",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "cardbook@vigneau.philippe",
      "strict_min_version": "100.0"
    }
  },
  "icons": {
    "64": "chrome/content/skin/cardbook_32_32.png"
  },
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://extensionpay.com/*"
      ],
      "js": [
        "chrome/content/vendor/ExtPay/ExtPay.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "http://*/",
        "https://*/"
      ],
      "js": [
        "chrome/content/vendor/ExtPay/ExtPay.js"
      ]
    }
  ],
  "host_permissions": [
    "https://*/*"
  ],
  "commands": {
    "CardBook-open": {
      "description": "__MSG_browserActionTitle__",
      "suggested_key": {
        "default": "Alt+Shift+K",
        "mac": "Alt+Shift+K"
      }
    },
    "CardBook-new-contact": {
      "description": "__MSG_newContactAbContextLabel__",
      "suggested_key": {
        "default": "Alt+Shift+N",
        "mac": "Alt+Shift+N"
      }
    }
  },
  "permissions": [
    "clipboardRead",
    "clipboardWrite",
    "storage",
    "unlimitedStorage",
    "tabs",
    "identity",
    "downloads"
  ],
  "action": {
    "default_title": "__MSG_cardbookToolbarButtonLabel__",
    "default_icon": {
      "16": "chrome/content/skin/cardbook_16_16.png"
    }
  },
  "options_ui": {
    "page": "chrome/content/HTML/configuration/wdw_cardbookConfiguration.html",
    "open_in_tab": true
  },
  "manifest_version": 3
}