GrabCRX

manifest.json

{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "name": "GrabCRX",
  "description": "Grabs the crx file of any Google Chrome extension.",
  "background": {
    "scripts": [
      "app.js"
    ]
  },
  "icons": {
    "128": "icon_128.png"
  },
  "permissions": [
    "contextMenus",
    "tabs",
    "https://chrome.google.com/webstore/detail/*"
  ],
  "version": "1.0",
  "manifest_version": 2
}