Examine source code of C@C Panel Extension

{
  "name": "C@C Panel Extension",
  "description": "CloudAtCost Panel Helper Extension",
  "version": "0.1.17",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "C@C Panel Helper"
  },
  "background": {
    "scripts": [
      "static/js/background.js"
    ]
  },
  "icons": {
    "16": "cac_icon16.png",
    "64": "cac_icon64.png"
  },
  "permissions": [
    "https://panel.cloudatcost.com/",
    "https://wallet.cloudatcost.com/",
    "https://mining.cloudatcocks.com/",
    "storage",
    "activeTab",
    "tabs",
    "alarms"
  ]
}