hosted pages
Hosted login, your brand
Don't want to build the UI? auth.nexauth.dev/your-app — white-label, methods from your app config, custom domain on Scale.
redirect
https://auth.nexauth.dev/demo2?redirect=https://app.io/cb
→ user authenticates → we redirect back with ?code=
→ exchange POST /v1/token/exchange {code} → session