Examine source code of Nowledge

{
  "name": "Nowledge",
  "version": "1.2.1",
  "description": "Give statistics in context",
  "permissions": [
    "storage",
    "management",
    "tabs",
    "identity",
    "*://www.googleapis.com/*",
    "*://accounts.google.com/*",
    "*://*.api.nowledge.ai/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_page": "options.html",
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "*.png",
    "styles/*",
    "*.html"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/mountains16.png",
      "32": "images/mountains32.png",
      "128": "images/mountains128.png"
    }
  },
  "icons": {
    "16": "images/mountains16.png",
    "32": "images/mountains32.png",
    "128": "images/mountains128.png"
  },
  "manifest_version": 2,
  "oauth2": {
    "client_id": "502676681366-3hrdvg58i3cp58lmnn7e0h2cj2rqj35e.apps.googleusercontent.com",
    "scopes": [
      "openid",
      "email",
      "profile"
    ]
  },
  "api_url": "https://production.api.nowledge.ai/api/",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6ce01f57-3928-4753-aa82-33db510cabce}"
    }
  }
}