Help Center → Getting Started → Password and Account Access
Do you need my OnlyFans password?
No. We don't ask for your OnlyFans password, and we don't need your Fansly or Fanvue password either.
We aren't going to log into your creator account. That's not how Snily works.
What we do need is your public username and some reference photos. We use those to look for copies of your content elsewhere on the internet.
So you can keep your login details to yourself. Nothing about using Snily requires you to hand them over.