Examine source code of MCP Browser Kit M2

{
  "$schema": "https://json.schemastore.org/webextension.json",
  "manifest_version": 2,
  "name": "MCP Browser Kit M2",
  "version": "10.1.4",
  "description": "Allow MCP Browser Kit to interact with the browser.",
  "permissions": [
    "tabs",
    "activeTab",
    "scripting",
    "storage",
    "webNavigation",
    "<all_urls>",
    "*://localhost:*/*",
    "*://127.0.0.1:*/*"
  ],
  "icons": {
    "16": "assets/images/icon-16.png",
    "32": "assets/images/icon-32.png",
    "48": "assets/images/icon-48.png",
    "128": "assets/images/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "bootstrap-extension-tab.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "vendors/webextension-polyfill/browser-polyfill.min.js",
      "bootstrap-extension.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{264f8236-2b24-4051-bb27-17f26fe2f260}"
    }
  }
}