Proof-of-work, no user interaction. Set FRIENDLY_CAPTCHA_SITE_KEY + FRIENDLY_CAPTCHA_SECRET_KEY in .env.
FRIENDLY_CAPTCHA_SITE_KEY
FRIENDLY_CAPTCHA_SECRET_KEY
.env
URL params: ?captcha=on|off|expired|failed · ?delay=ms (PoW widget; visible/invisible not applicable)
?captcha=on|off|expired|failed
?delay=ms
visible/invisible