What Is Better Auth? (with code)

Better Auth is a modern, open-source authentication framework designed for TypeScript applications. It provides a flexible, secure, and developer-friendly way to handle authentication without relying on heavy third-party services. Unlike traditional authentication solutions, Better Auth is framework-agnostic, meaning it can work with Next.js, React, Vue, Svelte, Astro, and many other stacks.

Better Auth gives developers full control over their authentication logic while still providing powerful built-in features that reduce development time and complexity.

What Makes It “Better”?

Better Auth stands out because it prioritizes simplicity, security, and extensibility. Instead of forcing developers into rigid structures, it allows deep customization while maintaining clean and intuitive APIs.

Some of the key reasons it is considered “better” include:

Minimal boilerplate code

First-class TypeScript support

No vendor lock-in

Highly customizable plugin system

Works with multiple databases and frameworks

This makes it an excellent choice for both small projects and large-scale applications.

Core Features of Better Auth

Better Auth comes with a rich set of features that make authentication easier and more reliable.

Built-in Authentication Methods

It supports:

Email and password authentication

OAuth login with providers like GitHub, Google, and Discord Session management with secure cookies

Example: Basic Setup (Next.js + TypeScript)

1) Install Better Auth

npm install better-auth

2) Environment Variables (.env)

BETTER_AUTH_SECRET=your_super_secure_secret
BETTER_AUTH_URL=http://localhost:3000
GITHUB_CLIENT_ID=your_github_client_id
GITHUB_CLIENT_SECRET=your_github_client_secret

3) Create auth configuration (`src/lib/auth.ts`)

import { betterAuth } from "better-auth";
import Database from "better-sqlite3";

export const auth = betterAuth({
  database: new Database("./auth.db"),

  emailAndPassword: {
    enabled: true,
  },

  socialProviders: {
    github: {
      clientId: process.env.GITHUB_CLIENT_ID as string,
      clientSecret: process.env.GITHUB_CLIENT_SECRET as string,
    },
  },
});

4) Connect to Next.js API Route (`app/api/auth/[...all]/route.ts`)

import { auth } from "@/lib/auth";
import { toNextJsHandler } from "better-auth/next-js";

export const { GET, POST } = toNextJsHandler(auth);

Now authentication routes like `/api/auth/sign-in`, `/api/auth/sign-up`, and `/api/auth/session` will work automatically.

Security First

Better Auth is built with security as a priority. It includes:

Secure password hashing

Protection against common web attacks

Safe session handling and expiration

Example: Session check in frontend (Next.js)

import { useSession } from "better-auth/react";

export default function Dashboard() {
  const { data: session } = useSession();

  if (!session) return <p>Please sign in</p>;

  return <h1>Welcome, {session.user.email}</h1>;
}

Plugin System

Developers can extend Better Auth using plugins. This allows adding features such as:

Magic link authentication

Passkeys

Multi-factor authentication

Custom OAuth providers

Example: Enabling magic links (conceptual example)

import { betterAuth } from "better-auth";
import { magicLink } from "better-auth/plugins";

export const auth = betterAuth({
  plugins: [
    magicLink()
  ]
});

How Better Auth Works

With Better Auth, you create a single authentication instance in your backend, configure your providers, and connect it to your database. From there, it automatically handles login, signup, sessions, and user management.

This means less manual coding and fewer security risks compared to building authentication from scratch.

Who Should Use Better Auth?

Better Auth is ideal for:

Developers who want full control over authentication

Teams building scalable web applications

Projects that require social login and secure sessions

Anyone looking for an open-source alternative to services like Auth0 or Clerk

Final Thoughts

Better Auth is a powerful and modern solution for authentication in TypeScript applications. It combines security, flexibility, and developer experience into one well-designed package. Whether you are building a simple app or a complex platform, Better Auth provides the tools you need to implement authentication efficiently and safely.

If you want, I can also convert this into a clean documentation-style article, blog post, or presentation format.