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Human verification

Portcullis

Portcullis is Zipper’s CAPTCHA alternative. It checks browser signals, solves a short proof-of-work, and issues a one-time token. Embed a site key, collect the token, and confirm it with Siteverify. Managed, non-interactive, and invisible modes.

  • ▸ Animated widget
  • ▸ Proof-of-work and signals
  • ▸ One-time tokens
  • ▸ Siteverify API

Auto-provisioned on every new zone. Read the Portcullis docs, including use cases and API examples. Manage it from the dashboard after you create an account.

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