Examine source code of AWS Agent

{
  "background": {
    "scripts": [
      "request-handler.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_popup": "dialog.html",
    "default_icon": {
      "16": "ico.svg",
      "48": "ico.svg",
      "128": "ico.svg"
    }
  },
  "description": "Access AWS sigv4 resources from your browser!",
  "manifest_version": 2,
  "name": "AWS Agent",
  "short_name": "AWS Agent",
  "options_ui": {
    "page": "dialog.html",
    "chrome_style": true,
    "browser_style": true
  },
  "icons": {
    "16": "ico.svg",
    "48": "ico.svg",
    "128": "ico.svg"
  },
  "permissions": [
    "*://*.amazonaws.com/*",
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "version": "0.3.0",
  "applications": {
    "gecko": {
      "id": "aws-agent@exthilion.org"
    }
  }
}