Examine source code of Developer ToolBox

{
  "manifest_version": 3,
  "name": "ToolBox Pro — Browser Extension",
  "version": "1.0.3",
  "description": "Multi purpose all-in-one developer toolbox.",
  "permissions": [
    "clipboardWrite",
    "tabs"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "ToolBox Pro"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+T",
        "mac": "Alt+T"
      },
      "description": "Open ToolBox Pro"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "toolboxpro@toolboxpro.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}