whzbox create <provider> provisions a sandbox, registers it with the account, caches it, and renders the result. AWS credentials are verified with STS. Azure and GCP are console-only and have no programmatic credentials to verify.
AWS styled output includes identity, console credentials, API credentials, and expiry information.
Azure styled output includes resource groups, console credentials, expiry information, and instructions to select Use a verification code before running whzbox mfa azure.
GCP styled output includes project metadata, console credentials, and expiry information.