Captcha Options for Grav Forms

If you run forms on a Grav site, you've almost certainly used Google reCAPTCHA. It's been built into the Form plugin for years. You sign up with Google, grab your two keys, paste them into the plugin config, and the spam mostly dries up. Free, simple, done.
Google changed that. reCAPTCHA isn't...

Captcha Options for Grav Forms

Can the Cap server be used in combination with the original Cap client script from https://trycap.dev/ included in a custom <form> element?

Yes, read about the library here: https://github.com/trilbymedia/cap-php

Wire-compatible with the official @cap.js/widget, so the unmodified JS widget can talk to a PHP-backed endpoint.