Next.js 16 · CognitionAuth · @ct/core-ui

The starter that already has the boring parts

Authentication, teams, an admin shell and a themeable component library — wired together and ready to build on. Clone it and start writing your product instead of your login form.

Auth that is already done
Passkeys, OAuth, magic links, MFA and sessions ship working. Toggle methods from the dashboard, no redeploy.
Teams and permissions
Multi-tenant from day one: teams, invitations, per-team API keys and a switcher wired into the header.
Themeable UI
Around seventy components with runtime theme presets and a layout customizer your users can drive.
Guarded by default
Dashboard routes are protected in middleware and again in the server layout, so nothing leaks on a bad path.