A recaptcha plugin?

[NateDhaliwal]

Is this what you’re looking for, perhaps?

Discourse hCaptcha

Summary Discourse hCaptcha supports hCaptcha integration into the local sign-up form. Install Guide This plugin is bundled with Discourse core. There is no need to install the plugin separately. Hosted by us? This plugin is available on all of our hosting tiers hCaptcha | Discourse - Civilized Discussion Features This plugin is designed to integrate hCaptcha into the sign-up form of Discourse forums. This plugin aims to enhance security…