# Better Auth

> Better Auth integration guide for TypeScript/JavaScript authentication. Covers server/client configuration, database adapters, session management, plugins, OAuth, and scaffolding auth from scratch. Use when setting up authentication with Better Auth, configuring auth.ts, adding OAuth providers, or creating sign-in/sign-up flows.

- Skill: `georgekhananaev/better-auth` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add georgekhananaev/better-auth`
- Raw SKILL.md: https://api.skillmd.com/api/skills/georgekhananaev/better-auth/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: georgekhananaev (https://skillmd.com/u/georgekhananaev)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/georgekhananaev/better-auth

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# Better Auth Skills

Complete authentication setup and integration guide using Better Auth for TypeScript/JavaScript applications.

## Available Sub-Skills

| Skill | File | Use When |
|-------|------|----------|
| Best Practices | [best-practices-SKILL.md](best-practices-SKILL.md) | Configuring Better Auth, database adapters, sessions, plugins, security |
| Create Auth | [create-auth-SKILL.md](create-auth-SKILL.md) | Scaffolding auth from scratch, adding login/signup to a project |

## Quick Reference

### Setup
1. `npm install better-auth`
2. Set `BETTER_AUTH_SECRET` and `BETTER_AUTH_URL` env vars
3. Create `auth.ts` with database + config
4. Create route handler for your framework
5. Run `npx @better-auth/cli@latest migrate`

### Supported Frameworks
Next.js (App/Pages Router), SvelteKit, Nuxt, Astro, Express, Hono, SolidStart

### Supported Databases
PostgreSQL, MySQL, SQLite, MongoDB (via Prisma, Drizzle, or direct drivers)

### Key Plugins
twoFactor, organization, passkey, magicLink, emailOtp, username, admin, apiKey, bearer, jwt, sso

## Source

From [better-auth/skills](https://github.com/better-auth/skills).