Introduction

About Auth.js​

Auth.js is a complete open-source authentication solution for web applications. Check out the live demos of Auth.js in action:

• Next.js
• SvelteKit
• SolidStart

Continue to our tutorials to see how to use Auth.js for authentication:

• Setup with OAuth
• Setup with magic links
• Integrating with external auth

Battery included​

• Built in support for 60+ popular services (Google, Facebook, Auth0, Apple…)
• Built-in email/password-less/magic link
• Use with any OAuth 2 or OpenID Connect provider
• Use with any username/password store

Flexible​

• Runtime agnostic – run anywhere! Vercel Edge Functions, Node.js, Serverless, etc.
• Use with any modern framework! Next.js, SolidStart, SvelteKit, etc.
• Bring Your Own Database – or none! MySQL, Postgres, MSSQL, MongoDB, etc. Choose database sessions or JWT.

Note: Email sign-in requires a database to store single-use verification tokens.

Secure by default​

• Signed, prefixed, server-only cookies
• Built-in CSRF protection
• Doesn’t rely on client-side JavaScript
• JWT with JWS / JWE / JWK.

Credits​

Auth.js is an open-source project that is only possible thanks to contributors.

To financially support the development of Auth.js, you can check our OpenCollective page. We appreciate your support 💚.