Examine source code of WebPage Same Origin APIs

{
  "manifest_version": 2,
  "name": "Webpage Same Origin APIs",
  "version": "1.0",
  "description": "Detects and displays same-origin APIs (REST, GraphQL, internal endpoints) and WebSocket connections that the current webpage calls via network requests. Shows results in a fading toast and popup. All client-side, no data collection.",
  "browser_specific_settings": {
    "gecko": {
      "id": "webpage_same_origin_apis@libor_benes.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "browser_action": {
    "default_title": "Same Origin APIs",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "webRequest",
    "tabs",
    "clipboardWrite",
    "<all_urls>"
  ]
}