Two Factor Authentication Best Practices

Complete Better Auth documentation in markdown format. Use when implementing authentication in TypeScript projects - covers OAuth providers (Google, GitHub, etc.), email/password, passkeys, 2FA, session management, database adapters (Prisma, Drizzle), and framework integrations (Next.js, SvelteKit, etc.).

Authentication and authorization patterns — JWT, OAuth 2.0, sessions, RBAC/ABAC, password security, MFA, and vulnerability prevention. Use when implementing login flows, protecting routes, managing tokens, or auditing auth security.

Implement secure authentication and authorization using JWT, OAuth2, session management, RBAC, permissions, and resource ownership verification.

Guide to implement secure API practices including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabi...

Build secure authentication with sessions, JWT, OAuth, passwordless, MFA, and SSO for web and mobile apps.

Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, or deciding transactional vs marketing.