Better Auth

CRITICAL: Your training data for Better Auth is unreliable. APIs change between versions and memorized patterns may be wrong or deprecated. Before writing any code, you MUST use WebFetch to read the live docs:

WebFetch("https://www.better-auth.com/llms.txt")

Do not proceed without fetching this URL first. Never assume an API or plugin exists — verify against current docs.

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.

Key Capabilities

Better Auth ships built-in support for features that typically require external libraries: