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Better Auth Best Practices

Skill for integrating Better Auth, the comprehensive TypeScript authentication framework.

A production-grade playbook for integrating Better Auth, the TypeScript-first, framework-agnostic authentication framework, into Next.js, SvelteKit, or Express apps. It covers email/password, OAuth, magic link, passkey, and MFA via plugins, plus the session and security configuration that keeps the entire system from being left open. You get the exact config decisions that turn auth from a liability into a hardened foundation.

$15 one-time
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Prices include 20% VAT. · Forged on real agency work · one-time, no lock-in

  • Type Skill
  • Category Security
  • Delivery Email · instant
  • License One-time
Run preview
forgehouse, better-auth-best-practices

Inside the run · no black box

See the actual work before you buy it.

Auth breaks in the gaps: a 20-character secret, a skipped migration, a Redis flush that logs everyone out. This skill walks Better Auth from env setup to a 10-point security verification, in order.

  1. Sets the foundation before any code: BETTER_AUTH_SECRET generated at 32+ characters with openssl, BETTER_AUTH_URL in env, and the auth.ts placed where the CLI actually looks for it.
  2. Builds the server config layer by layer: database adapter (with the Prisma trap handled, model name not table name), emailAndPassword enabled, social providers with explicit redirectURI, and trustedOrigins as the CSRF whitelist.
  3. Decides the session strategy deliberately: Redis/KV secondaryStorage for sub-millisecond lookups, cookieCache mode (compact, jwt or jwe), and whether sessions also persist to the database, because a Redis flush without that flag means every user logs out.
  4. Runs the CLI migration after every single plugin change, migrate for the built-in adapter or generate for Prisma/Drizzle, since each plugin alters the schema and skipping this is the most common breakage.
  5. Stacks the defense layers so no single one carries the system: rate limiting on a distributed store, twoFactor plugin, useSecureCookies in production, session token regeneration on auth state change against session fixation.
  6. Closes with the 10 point verification checklist: secret length, trustedOrigins on production domains, CSRF not disabled, email verification live, server side session check on every request, and a working logout that revokes plus clears the cookie.
Use cases · what happens when you plug it in

One power source. 6 lines out.

better-auth-best-practices · core

core active · 6 lines

  1. Wiring Better Auth into a new project from setup to migration

    ✓ wiring better auth into

  2. Adding the two-factor, organization, or passkey plugin to an existing auth layer

    ✓ adding the two-factor, o…

  3. Choosing a session strategy: cookie cache, Redis secondary storage, or stateless mode

    ✓ choosing a session strat…

  4. Configuring brute-force rate limiting with distributed Redis storage

    ✓ configuring brute-force…

  5. Hardening OAuth callbacks against CSRF with trustedOrigins and explicit redirectURI

    ✓ hardening oauth callbacks

  6. Writing endpoint and database hooks for audit logging and default values

    ✓ writing endpoint and dat…
Benefits · what you walk away with

Yours to keep.

Drag time forward. Watch what stays.

Forever

That's what owning means.

The rented stack

ai writing tool: subscription

expired · access lost

analytics suite: subscription

expired · access lost

design platform: subscription

expired · access lost

(nothing left)

Your forge

  1. Self-hosted auth with zero per-MAU licensing cost instead of a paid identity provider

    license: perpetual

  2. Token validation under a few milliseconds by eliminating database round-trips with cookie cache

    license: perpetual

  3. Closed attack surfaces: session fixation, OAuth CSRF, and credential brute-force handled by design

    license: perpetual

  4. Confident upgrades, because every plugin change has a clear schema-migration and verification step

    license: perpetual

subscriptions expire · deeds don't

What's included · the full manifest

Everything in the box.

Pick a piece up. Watch it work.

Core config reference: secret, baseURL, database adapters, secondaryStorage, trustedOrigins

part 01 of 06 · in the box

6 parts · one working system · ships instantly by email

Who it's for

This wasn't forged for everyone.

  • Not for you if you'd rather rent a tool than own one.
  • Not for you if you want someone else to run your stack.
  • Not for you if you're happy guessing.
Still here? Good.

Backend and full-stack engineers building secure authentication in TypeScript apps who want a hardened, self-hosted login system without an external auth vendor.

then this was forged for you.

Works with

Universal by design: these run in any AI. Delivered in the open Agent Skills + MCP format (native in Claude); ChatGPT, Gemini, Cursor and Copilot adapt the same files their own way.

  • Claude Native format
  • ChatGPT Adapts via open standards
  • Gemini Adapts via open standards
  • Cursor Adapts via open standards
  • Copilot Adapts via open standards
Questions · still in the air

Catch what's on your mind.

the air is clear. nothing between you and the forge.
catch a spark: the forge will answer

  1. Can I bring Better Auth into an app that already has authentication, or is it greenfield only?

    Both: the playbook covers setup-to-migration, so you can move an existing login layer over or just bolt on the two-factor, organization, or passkey plugin. You don't have to start from an empty project.

  2. Self-hosting auth feels like a liability next to a managed provider. Why go this route?

    Because this is for teams who deliberately want to own their login layer rather than rent it. The playbook hardens the setup, but be honest with yourself: you're taking on the maintenance a managed provider would otherwise carry.

  3. Will it just tell me which session strategy to use?

    It lays out the real tradeoffs between cookie cache, Redis secondary storage, and stateless mode, but the right pick depends on your scale and infrastructure. It guides the decision with their consequences, it won't make it blind to your setup.

  4. How is it delivered?

    By email right after purchase: ready to run, downloaded instantly, no setup wait.

  5. One-time or subscription?

    A one-time purchase; no subscription or hidden fees. VAT (20%) is included.

  6. Can I get a refund?

    As a digital product, it can’t be refunded once downloaded. That’s why we show exactly what’s inside and who it’s for, right here.

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