Examine source code of Schoology Grades

{
  "name": "Schoology Grades",
  "description": "Show Schoology grades",
  "version": "1.2001",
  "manifest_version": 3,
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://*.schoology.com/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.schoology.com/api"
      ],
      "js": [
        "getkey.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "schoology-grades@hafnium780.github.io"
    }
  }
}