WELCOME
Introduction
Kleis is a modern, standards-compliant OpenID Connect (OIDC) suite. Whether you want a high-level SDK for Next.js or a standalone Auth Server for your multi-platform infrastructure, Kleis has you covered.
Next.js SDK
The fastest way to add auth to your Next.js application. Handles PKCE, sessions, and HTTP-only cookies out of the box.
Get started with SDKManual Integration
Use the Kleis Identity Provider (IdP) as a standalone OIDC server. Language agnostic and compatible with any standard OIDC library.
Manual API GuideWhy choose Kleis?
- ✔ Full SSO Across All Your Apps
- ✔ Standards Compliant OIDC
- ✔ PKCE Secure by Default
- ✔ Lightweight & Edge Ready
- ✔ Open Source & Transparent