BetterAuthKit: The Ultimate Next.js 15 Auth Starter You’ve Been Waiting For

#authjs #react #nextjs #prisma

Authentication is often one of the most time-consuming and error-prone parts of building modern web applications. Whether you're launching a SaaS platform, building a dashboard, or experimenting with a personal project, having a secure and scalable auth system is non-negotiable.

That’s why I built BetterAuthKit — a production-ready authentication boilerplate powered by Next.js 15, BetterAuth, and Neon PostgreSQL, designed to help developers ship faster without compromising security or best practices.

🚀 Why BetterAuthKit?

BetterAuthKit takes care of all the essentials you need in a modern authentication system:

✅ Google OAuth & Email/Password login
🔒 Domain-based email restrictions (@gmail.com by default)
📧 Secure password reset via email
💻 Built with the latest Next.js 15 (App Router)
🛡️ Security-first design with JWT sessions & hashed credentials
🌱 Seamless integration with Neon (PostgreSQL) and Prisma
⚙️ Fully typed with TypeScript

🧰 Tech Stack Overview

Tech	Role
Next.js 15	Fullstack React framework
BetterAuth	Authentication layer
Prisma ORM	Database ORM for Postgres
Neon	Scalable PostgreSQL hosting
Nodemailer	Email sending & reset links
TypeScript	Type-safe codebase

🧑‍💻 Features at a Glance

🔐 Email + Password Login
Fully secured and hashed with bcrypt, ready for production.
🟢 Google OAuth Integration
Fast and easy social login using your Google credentials.
📬 Password Reset via Email
Users can reset their password using a secure, time-bound link.
🛂 Gmail Domain Restriction
Restrict login and sign-up to specific domains — useful for internal tools or private betas.
🧼 Clean & Scalable Codebase
Follows modern development patterns with a modular structure and strong TypeScript support.

🔧 Getting Started in 5 Steps

1. Clone the Repo

git clone https://github.com/Abdullah-dev0/better-auth-kit.git
cd better-auth-kit

2. Install Dependencies

npm install

3. Configure Your .env.local

cp .env.example .env.local

Add your credentials for Neon, Google OAuth, and SMTP in .env.local.

4. Set Up the Database

npx prisma generate
npx prisma db push

5. Start the Development Server

npm run dev

Visit http://localhost:3000 and you're live!

🔐 Security Highlights

Passwords hashed with bcrypt
JWT session strategy for secure login
Domain-based access control
All sensitive data handled via .env.local
CSRF and token expiration handling included

🌍 Ready to Deploy

BetterAuthKit is 100% deployable on Vercel:

Push to GitHub
Import to Vercel
Add your environment variables
Connect your Neon DB
Done! ✅

⭐ Final Thoughts

BetterAuthKit is more than just a starter — it's a scalable, production-grade foundation for your next web app. Whether you're building an admin dashboard, internal tool, or public product, it saves you countless hours and sets you up for long-term maintainability.