Core Docs - Core Concepts - Intro to Captcha

Rock Version: v19.0
Last Modified: 2026-07-16 2:55 PM

Public forms are a magnet for bots, so Rock includes CAPTCHA to confirm a real person is on the other end and keep spam and fraudulent submissions out of your data. There is nothing to sign up for: Rock ships with a self-hosted CAPTCHA that uses Proof of Work challenges, so it guards against large-scale bot attacks without any third-party account or keys.

See Configure Captcha and Use Captcha for the modes and the full list of supported blocks.