Better Auth + Prisma: Secure Auth in Next.js App Router

Most devs still fumble auth when using the App Router in Next.js.

• And I get it — juggling:
• API routes
• secure token handling
• and clean form validation with shadcn...

It’s easy to fall back on boilerplate or legacy auth flows that barely work.

That’s exactly the problem I hit when I tried integrating Better Auth with Prisma — using only the Next.js App Router (no pages directory, no hacks).

Here’s what I tackled:

🔐 Clean sign-

• up/login with email + password
• ✅ Form validation with shadcn/ui forms + Zod
• 📦 Full DB integration using Prisma
• 🧠 Session + token handling with middleware, not just cookie tricks
• 🧪 Safe actions via next-safe-action

All in one consistent auth system — no magic, no vendor lock-in.

If you're building a modern full-stack app with Next.js 15+ and want an auth system that’s secure, simple, and future-proof, I wrote up the guide here:

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App Router + Server Actions + Prisma

What would you add or do differently? Curious to see how others are handling auth.