Examine source code of Topicus KeyHub

{
  "browser_specific_settings": {
    "gecko": {
      "id": "keyhub@topicus.nl"
    }
  },
  "manifest_version": 3,
  "name": "Topicus KeyHub",
  "short_name": "KeyHub",
  "version": "9.0.0",
  "description": "__MSG_manifest_description__",
  "default_locale": "en_GB",
  "author": "Topicus Security B.V.",
  "icons": {
    "32": "icon/keyhub-icon-32.png",
    "128": "icon/keyhub-icon-128.png",
    "256": "icon/keyhub-icon-256.png"
  },
  "action": {
    "default_title": "Topicus KeyHub",
    "default_icon": {
      "32": "icon/keyhub-icon-32.png",
      "128": "icon/keyhub-icon-128.png",
      "256": "icon/keyhub-icon-256.png"
    },
    "default_popup": "index.html"
  },
  "commands": {
    "trigger-fill-with-keyhub": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Ctrl+Shift+F"
      },
      "description": "Fill with Topicus KeyHub"
    },
    "trigger-fill-rotating-pwd": {
      "suggested_key": {
        "default": "Ctrl+Shift+X",
        "mac": "Ctrl+Shift+X"
      },
      "description": "Fill rotating password"
    }
  },
  "incognito": "spanning",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/console*"
      ],
      "js": [
        "detectkeyhub.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "autofill.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "index.html",
        "callback.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "storage": {
    "managed_schema": "schema-managed.json"
  },
  "permissions": [
    "clipboardWrite",
    "contextMenus",
    "scripting",
    "storage",
    "tabs",
    "identity",
    "webRequest",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "https://*/keyhub/rest/v1*",
    "https://www.topicus-keyhub.com/*"
  ]
}