Yeah we definitely use recaptcha in a GraphQL API for sign-ups to browserless.io. There is a doc on how to do so programmatically via JS in the browser. The docs aren’t great, per se, but it is definitely doable.

EDIT: docs are here: https://developers.google.com/recaptcha/docs/display#javascr... though the lifecycle of how this all works is confusing. I’ll have to do a write-up on this at some point.