better-auth skillA
better-auth is agent-read markdown (skill) from fusengine/agents: Use when implementing Next.js authentication with Better Auth — OAuth, 2FA, magic links, SSO, Stripe billing, or session management..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective> Implements Better Auth, a TypeScript-first authentication library, in a Next.js 16 App Router project: server config, client (`createAuthClient`), session management, and the `app/api/auth/[...all]/route.ts` handler, plus `proxy.ts` for route protection (replacing middleware). Covers the full surface — 40+ OAuth providers (Google, GitHub, Discord, Apple, Microsoft, and more), 20+ plugins (2FA, magic links, passkeys, organizations/multi-tenant, enterprise SSO/SAML, SCIM provisioning, Stripe/Polar billing, JWT/Bearer, API keys), and database adapters (Prisma, Drizzle, MongoDB, raw SQL). Also covers migration paths from Auth.js, Clerk, Auth0, Supabase, and WorkOS. While Better Auth itself is framework-agnostic, this skill's architecture guidance (proxy.ts, App Router API route) is Next.js-specific — for Prisma schema/query details see prisma-7. </objective> # Better Auth - Complete Authentication TypeScript-first authentication library with 40+ OAuth providers and 20+ plugins. ## Agent Workflow (MANDATORY) Before ANY implementation, spawn 3 agents in parallel, one `Agent` call each with a `name`: …
Read the whole file at its exact version.
How to install
mdr add fusengine/agents/better-auth@git:20260904.5f1d30fmdr add fusengine/agents/better-auth@sha256:4a2d62f306d176bePin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_kitwjyoedpy4lgki)
1 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.5f1d30f latest | 2026-09-04 | 5f1d30f | 8,304 B | A | view · diff |
| git:20260729.3b91eed | 2026-07-29 | 3b91eed | 8,275 B | A | view · diff |
| git:20260207.0a3cd21 | 2026-02-07 | 0a3cd21 | 7,454 B | A | view · diff |
| git:20260131.ff5ceca | 2026-01-31 | ff5ceca | 7,438 B | A | view · diff |
| git:20260131.6253d4e | 2026-01-31 | 6253d4e | 3,999 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 (8304 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
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kitwjyoedpy4lgki GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/better-auth GET https://markdownregistry.com/api/v1/blob/4a2d62f306d176be429f89d2825abab09169aa8697243d1061b94cbfb89853a3
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