Better Auth Skill
Production-ready authentication for any TypeScript framework—Next.js, Nuxt, SvelteKit, Remix, Astro, Hono, Express.
When to Use
- Adding authentication to TypeScript/JavaScript apps
- Email/password or social OAuth login
- 2FA, passkeys, magic links
- Multi-tenant apps with organizations
- Session management and protected routes
Key Capabilities
| Feature | Built-in | Plugin |
|---|---|---|
| Email/Password | ✓ | - |
| OAuth (GitHub, Google, etc.) | ✓ | - |
| Email Verification | ✓ | - |
| Password Reset | ✓ | - |
| Rate Limiting | ✓ | - |
| Two-Factor (TOTP) | - | twoFactor |
| Passkeys/WebAuthn | - | passkey |
| Magic Links | - | magicLink |
| Organizations | - | organization |
Frameworks: Next.js, Nuxt, SvelteKit, Remix, Astro, Hono, Express
Databases: PostgreSQL, MySQL, SQLite, MongoDB (via Drizzle, Prisma, Kysely)
Common Use Cases
SaaS MVP Authentication
Who: Solo founder building first product
"Add authentication to my Next.js app with email/password signup,
GitHub OAuth, and PostgreSQL with Drizzle. Include email verification."Multi-Tenant Platform
Who: Team building B2B SaaS
"Set up Better Auth with organization support for multi-tenant app.
Need team invitations, role-based permissions, and admin dashboard."Secure Enterprise App
Who: Developer at security-conscious company
"Implement Better Auth with 2FA requirement, passkey support,
rate limiting, and audit logging. PostgreSQL backend."Passwordless Experience
Who: UX-focused startup
"Add magic link authentication to my SvelteKit app.
No passwords, just email-based login with session management."Quick Prototype
Who: Developer testing an idea
"Set up basic Better Auth with SQLite for local development.
Just email/password, minimal config."Quick Start
npm install better-authBETTER_AUTH_SECRET=your-32-char-secret
BETTER_AUTH_URL=http://localhost:3000npx @better-auth/cli generate # Generate schema
npx @better-auth/cli migrate # Apply migrationsAuth Method Selection
| Method | Best For |
|---|---|
| Email/Password | Traditional web apps, full credential control |
| OAuth | Quick signup, social profile access |
| Passkeys | Passwordless, security-first apps |
| Magic Links | Email-first users, temporary access |
Pro Tips
- Run migrations after adding plugins:
npx @better-auth/cli generate && migrate - Use environment variables for secrets and OAuth credentials
- Enable rate limiting in production to prevent abuse
- Combine methods for user flexibility (OAuth + email as backup)
- Not activating? Say: “Use the better-auth skill to…”
Related Skills
- Databases - PostgreSQL/MongoDB setup
- Next.js - Framework integration
- Backend Development - API patterns
Key Takeaway
Use Better Auth for production-ready authentication in any TypeScript framework with built-in email/password, OAuth, and extensible plugin system for 2FA, passkeys, and organizations.