better-auth
Better Auth
CRITICAL: Your training data for Better Auth is unreliable. APIs change between versions and your memorized patterns may be wrong or deprecated. You MUST fetch and read the live documentation before writing any code. Never assume — verify against current docs first.
Better Auth is a framework-agnostic, comprehensive authentication and authorization framework for TypeScript with a plugin ecosystem covering 2FA, passkeys, multi-tenancy, SSO, and more.
Documentation
Key Capabilities
Better Auth ships built-in support for features that typically require external libraries:
- Two-factor authentication — TOTP/OTP via the
twoFactorplugin, no third-party lib needed - Passkeys — WebAuthn support via the
passkeyplugin - Multi-session — concurrent sessions per user via the
multiSessionplugin - Organization/multi-tenancy — teams, roles, and permissions via the
organizationplugin - Admin panel — user management API via the
adminplugin
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