Examine source code of Buster: Captcha Resolver

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.1.1",
  "author": "Armin Sebastian",
  "homepage_url": "https://github.com/dessant/buster",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "buster-captcha@jeelsboobz.id",
      "strict_min_version": "52.0"
    }
  },
  "permissions": [
    "storage",
    "notifications",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "nativeMessaging",
    "<all_urls>"
  ],
  "content_security_policy": "default-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; connect-src *; object-src 'none'; frame-ancestors http://127.0.0.1:*;",
  "icons": {
    "16": "src/icons/app/icon-16.png",
    "19": "src/icons/app/icon-19.png",
    "24": "src/icons/app/icon-24.png",
    "32": "src/icons/app/icon-32.png",
    "38": "src/icons/app/icon-38.png",
    "48": "src/icons/app/icon-48.png",
    "64": "src/icons/app/icon-64.png",
    "96": "src/icons/app/icon-96.png",
    "128": "src/icons/app/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/recaptcha/api2/bframe*",
        "https://www.recaptcha.net/recaptcha/api2/bframe*",
        "https://www.google.com/recaptcha/enterprise/bframe*",
        "https://www.recaptcha.net/recaptcha/enterprise/bframe*"
      ],
      "all_frames": true,
      "run_at": "document_idle",
      "css": [
        "src/solve/reset-button.css"
      ],
      "js": [
        "src/manifest.js",
        "src/solve/script.js"
      ]
    },
    {
      "matches": [
        "http://127.0.0.1/buster/setup?session=*"
      ],
      "run_at": "document_idle",
      "js": [
        "src/content/setup.js"
      ]
    }
  ],
  "options_ui": {
    "page": "src/options/index.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "background": {
    "page": "src/background/index.html"
  },
  "web_accessible_resources": [
    "src/setup/index.html",
    "src/content/reset.js",
    "src/solve/solver-button.css"
  ]
}