configuring-better-auth

Implement centralized OAuth 2.1 and OIDC authentication with Better Auth to enable shared sign-in across multiple applications. This solves the problem of rebuilding auth from scratch by providing token management, SSO integration, and global logout flows.

Configure Better Auth as an OAuth 2.1 identity provider with OIDC, JWKS endpoints, email verification, and admin controls. This establishes a centralized auth server capable of managing trusted origins and admin-controlled OAuth client registration.

Use Better Auth for Next.js apps requiring PKCE login flows, JWT verification, and multi-app SSO. It applies to environments needing secure cookie-based token storage, trusted origin management, and centralized OAuth 2.1 identity provider capabilities.

Better Auth implements the OAuth 2.1 standard with PKCE, which is more secure than basic OAuth 2.0 flows. It provides centralized OIDC identity provider features, JWKS validation, and admin-controlled client registration rather than handling auth locally per app.

After configuring Better Auth SSO, verify JWTs via JWKS endpoints, handle refresh tokens, and implement global logout across applications. This ensures secure, centralized session management and token validation for all connected Next.js clients.