How do I set up Google OAuth with Auth.js?

Create credentials in Google Cloud Console, then configure the Google provider in Auth.js with your client ID and secret. The README mentions built-in support for popular sign-in services, and documentation provides detailed steps.

Auth.js vs Supabase Auth: which is better for my project?

Auth.js is open-source and self-hosted, ideal for full control and customization, while Supabase Auth is a managed service with integrated backend features. Choose Auth.js for flexibility, Supabase for ease and scalability.

Does Auth.js support password-based authentication?

Yes, Auth.js supports email/passwordless authentication, but for traditional password logins, you may need custom adapters or configurations, as it emphasizes passwordless methods by default.

How to use Auth.js with a MongoDB database?

Use a MongoDB adapter from the Auth.js adapters list, configure it in your setup, and ensure your database connection is secure. The README highlights database agnosticism with support for various backends.

What are the breaking changes in Auth.js v5?

Auth.js v5 introduces updates like improved TypeScript support and runtime agnosticism, but check the migration guide for specific changes, as the transition to Better Auth may affect long-term compatibility.

Open-Awesome

next-auth

ISCTypeScriptnext-auth@4.24.14

A flexible, secure authentication library for modern web applications, supporting OAuth, email/passwordless, and passkeys across any JavaScript runtime.

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28.2k stars4.0k forks0 contributors

What is next-auth?

Auth.js is an open-source authentication library for modern web applications, built on standard Web APIs. It provides a flexible, secure solution for implementing authentication with support for OAuth, email/passwordless, passkeys, and database-agnostic sessions, working across any JavaScript runtime and framework.

Target Audience

Full-stack developers building web applications with JavaScript/TypeScript who need a robust, customizable authentication system that works with any backend or frontend framework.

Value Proposition

Developers choose Auth.js for its open-source nature, flexibility to work with or without a database, strong security defaults, and ability to run anywhere—from Docker to serverless environments—while maintaining full control over authentication data.

Overview

Authentication for the Web.

Use Cases

Best For

Implementing OAuth and OpenID Connect in Next.js or React applications
Adding passwordless email authentication to a web app
Building secure authentication for serverless or edge runtime applications
Creating a custom authentication flow with multiple database backends
Integrating passkeys/WebAuthn for modern, phishing-resistant sign-in
Developing full-stack applications that require stateless authentication without a database

Not Ideal For

Projects needing out-of-the-box, zero-configuration authentication with pre-built UI components
Legacy applications requiring non-standard authentication protocols not covered by OAuth or OIDC
Teams preferring fully managed authentication services over self-hosted solutions

Pros & Cons

Pros

Broad Authentication Support

Supports OAuth 2.0+, OIDC, email/passwordless, and passkeys with built-in providers for services like Google and GitHub, as highlighted in the README for flexible sign-in options.

Database Flexibility

Works with or without a database, offering adapters for MySQL, PostgreSQL, MongoDB, and more, allowing developers to own their data and choose backends freely.

Strong Security Defaults

Promotes passwordless sign-in, uses CSRF tokens, and encrypts JWTs by default following OWASP guidance, ensuring secure authentication out of the box.

Runtime Versatility

Runs anywhere including Docker, Node.js, and serverless environments, making it suitable for diverse deployment scenarios as stated in the README.

Cons

Configuration Complexity

Setting up custom providers, adapters, and advanced session management requires significant manual configuration, which can be daunting for simpler projects.

No Built-in UI

Lacks pre-styled UI components for sign-in pages, forcing developers to build interfaces from scratch, adding to development time.

Transition Uncertainty

With the project now part of Better Auth and recommendations to use it for new projects, there may be breaking changes or reduced focus on Auth.js, as noted in the README.

Frequently Asked Questions

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