FAQs

What is the project status of the library?

Convex Auth is in early preview.

NextAuth (Auth.js) requires a Next.js (or similar) server. Convex Auth works with and without a Next.js server, you can use it directly from an SPA hosted on a CDN.
Convex Auth by running directly and only on your Convex backend avoids some of the complexity of syncing state between two servers.
Convex Auth has built-in support for OTP and email+passwords methods

Convex Auth doesn’t require signing up for another service, except for:
- Email provider for email-based authentication methods
- OAuth providers like Google or Github, but you would have to set these up with Clerk/Auth0 later anyway
Convex Auth is simpler because it stores all user data directly in your Convex database. It doesn't require syncing state from an external database.
Convex Auth doesn't require owning a top-level domain (like example.com), although your email provider or OAuth provider might.
We still recommend Clerk and Auth0 as featureful auth solutions.

Firebase and Supabase Auth store user data in their respective databases. Convex Auth stores user data directly in your Convex database.
Convex Auth includes basic functionality included in Firebase/Supabase Auth. For advanced authentication functionality (SSO, MFA, etc.) we recommend using Clerk or Auth0.