Examine source code of Vault Credential Helper

{
  "description": "Issue credentials via Hashicorp Vault from your Browser",
  "manifest_version": 2,
  "name": "Vault Credential Helper",
  "version": "1.5.1",
  "homepage_url": "https://cpanel.net/",
  "icons": {
    "48": "icons/vault-creds-helper-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "vault-credentials-helper@cpanel.net",
      "strict_min_version": "78.0"
    }
  },
  "permissions": [
    "clipboardWrite",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://*/*",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": "icons/vault-creds-helper-48.png",
    "default_title": "Vault Credential Generator",
    "default_popup": "popup/index.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "chrome_style": true
  }
}