better-auth SKILL.md skillA
better-auth from secondsky/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add secondsky/claude-skills/better-auth@v3.1.0Pins v3.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- secondsky/claude-skills
- Path
plugins/better-auth/skills/better-auth/SKILL.md- Versions recorded
- 5
- Latest version
- v3.1.0, committed Aug 3, 2026
- First version recorded
- Jan 18, 2026
- Size
- 29,942 bytes
- Repository stars
- 247
- License
- MIT
Skill for integrating Better Auth - comprehensive TypeScript authentication framework for Cloudflare D1, Next.js, Nuxt, and 15+ frameworks. Use when adding auth, encountering D1 adapter errors, or implementing OAuth/2FA/RBAC features.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# better-auth
**Status**: Production Ready
**Last Updated**: 2026-04-08
**Package**: `better-auth@1.6.0` (ESM-only)
**Dependencies**: Drizzle ORM or Kysely (required for D1 complex use cases; D1 native support available in v1.5+)
---
## Quick Start (5 Minutes)
### Installation
**Option 1: Drizzle ORM (Recommended)**
```bash
bun add better-auth drizzle-orm drizzle-kit
```
**Option 2: Kysely**
```bash
bun add better-auth kysely @noxharmonium/kysely-d1
```
### ⚠️ v1.4.0+ Requirements
better-auth v1.4.0+ is **ESM-only**. Ensure:
**package.json**:
```json
{
"type": "module"
}
```
**Upgrading from v1.3.x?** Load `references/migration-guide-1.4.0.md`
**Upgrading from v1.4.x?** Load `references/migration-guide-1.5.0.md`
### ⚠️ CRITICAL: D1 Adapter Requirements
**v1.5.0+**: D1 is now natively supported. Pass your D1 binding directly:
```typescript
// ✅ SIMPLEST - D1 native (v1.5.0+)
import { betterAuth } from "better-auth";
const auth = betterAuth({
database: env.DB, // D1 binding, auto-detected
});
```
For complex schemas, use Drizzle ORM:
```typescript
// ✅ RECOMMENDED for complex schemas - Drizzle
import { drizzleAdapter } from "better-auth/adapters/drizzle";
…Read the whole file at its exact version.
How to install
mdr add secondsky/claude-skills/better-auth@sha256:d1874a7729ad4ab3The line at the top of this page pins the label v3.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ozu46wlh7qmxvoac)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jan 18, 2026 and Aug 3, 2026, about one every 49 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v3.1.0 latest | 2026-08-03 | ddd6f10 | 29,942 B | A | view · diff |
| v3.1.0 | 2026-05-14 | 120edd6 | 29,939 B | A | view · diff |
| v3.1.0 | 2026-04-08 | 2e4f739 | 29,280 B | A | view · diff |
| v2.2.0 | 2026-04-02 | 89c5e89 | 23,807 B | A | view · diff |
| v2.2.0 | 2026-01-18 | 24a0f27 | 23,803 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (29942 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
secondsky/claude-skills · 247 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ozu46wlh7qmxvoac GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/better-auth GET https://markdownregistry.com/api/v1/blob/d1874a7729ad4ab3775c17480739783b8a6d41fedf40d456c13b00b191c85055
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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