# 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.

- **Type:** Skill
- **Install:** `agentstack add skill-georgekhananaev-claude-skills-vault-better-auth`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [georgekhananaev](https://agentstack.voostack.com/s/georgekhananaev)
- **Installs:** 0
- **Category:** [Databases](https://agentstack.voostack.com/c/databases)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [georgekhananaev](https://github.com/georgekhananaev)
- **Source:** https://github.com/georgekhananaev/claude-skills-vault/tree/main/.claude/skills/better-auth
- **Website:** https://www.npmjs.com/package/claude-skills-vault

## Install

```sh
agentstack add skill-georgekhananaev-claude-skills-vault-better-auth
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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).

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [georgekhananaev](https://github.com/georgekhananaev)
- **Source:** [georgekhananaev/claude-skills-vault](https://github.com/georgekhananaev/claude-skills-vault)
- **License:** MIT
- **Homepage:** https://www.npmjs.com/package/claude-skills-vault

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-georgekhananaev-claude-skills-vault-better-auth
- Seller: https://agentstack.voostack.com/s/georgekhananaev
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.