ZewstID Documentation

Add authentication to your app in minutes. OAuth, passwords, magic links, passkeys, and more.

Quick Start Guide

Get authentication working in your Next.js app. Step-by-step setup with code examples.

Standard OAuth 2.0 / OIDC. Works with any framework - Next.js, Express, Flask, and more.

Install the SDK

npm install @zewstid/nextjs

Full-featured SDK with SSO support

Mobile auth with biometrics

Hooks and components

Server-side authentication

Check the common pitfalls checklist - it solves 95% of integration problems.