Examine source code of ChatGPT Search Engine

{
  "manifest_version": 3,
  "name": "ChatGPT Search Engine",
  "version": "1.0",
  "description": "Adds ChatGPT as a custom search engine in Firefox.",
  "action": {
    "default_icon": {
      "48": "icon.png"
    },
    "default_title": "ChatGPT Search"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "ChatGPT",
      "search_url": "https://chat.openai.com/?q={searchTerms}",
      "keyword": "gpt",
      "favicon_url": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt.firefox@secureit.tools",
      "strict_min_version": "109.0"
    }
  }
}