Examine source code of LinkVault

{
  "name": "LinkVault",
  "version": "1.0.8",
  "description": "Short access to links saved in linkvault application",
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "https://linkvault.cc/api/*",
    "tabs"
  ],
  "author": "Alex Seitz",
  "manifest_version": 2,
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "MacCtrl+Shift+L"
      }
    }
  }
}