About CaptchaTool
CaptchaTool is a CAPTCHA and form-protection service for websites. It provides a drop-in widget that can be added with a script tag and hidden form inputs, and supports server-side verification through an API pass/fail response. The product emphasizes privacy-friendly protection with no cookies, no fingerprinting, and limited logging for abuse prevention. Website text also highlights sub-second challenge validation and single-use, cryptographically signed proof tokens designed to prevent tampering and replay attacks.