App shell
FoundationSign-in seam. Working demo sign-in with server-verified sessions, ready to swap for the auth pack you choose.
Paid access seam. Reads the stored plan and gives payments packs one write method for grants and revocations.
Verify. A live setup report that names what is wired, what still runs on defaults, and the file to open next.
The frame every other pack plugs into.
Mined from production apps and scanned for secrets on every release. Typed end to end.
App shell starter code pack
Start here. Every other pack plugs in.
After you buy, one prompt pulls it in
Click, then paste into your AI chat. Your agent installs Boost OS and wires in the App shell starter code pack.
Then just tell your agent what you want
Your AI coding agent · with Boost OS
Start my app: a hiking journal called Trailnote with sign-in and a members area.
Building on the app shell:
Your product name goes in the canonical stack config, the landing page gets your copy, and the members area sits behind the shell's server-side sign-in guard.
Auth, payments, and email stay on the shell's working defaults until you pick providers; each one then installs as its own pack and connects at a named seam.
- Cursor
- Claude Code
- Codex
- GitHub Copilot
- Windsurf
What you get
- Run a real app the moment it installs, with zero vendor accounts
- Sign in and see a protected member area from minute one
- Plug in auth, payments, email, analytics, and errors when you choose
- Working defaults for every seam until then, nothing blocks building
- Check what is wired and what is not with one live setup report
- Ship with page titles, descriptions, sitemap, and robots handled
- Guide your agent from empty folder to deployed app, step by step
The move list
7 modules across three jobs. Open any module to see every file inside it.
Get paid
Take the money: one-time, recurring, metered, or agent-initiated.
After the sale
Deliver access, send the emails, and handle refunds without drama.
The safety rails
The plumbing that keeps every event verified and every grant counted once.
- VerifyA live setup report that names what is wired, what still runs on defaults, and the file to open next.2 files
- Shared libraryValidated settings, shared types, page metadata helpers, and the single storage adapter behind every module.5 files
- SetupThe canonical stack declaration, a setup script that prepares local settings, and the choose-your-stack guide.27 files
Provenance
Extracted from production application shells serving real customers
Frequently asked questions
Is this a Next.js boilerplate?
It plays the same opening role with a different design. A boilerplate freezes one vendor stack on day one. The shell runs immediately on built-in defaults (a demo sign-in, an in-memory store, log-only email and analytics) and leaves every vendor decision open behind a named seam, so you choose auth, payments, and email when you are ready, from packs that were each tested on their own.
Do I need the other code packs to use it?
No. The shell runs complete on its defaults, and that is the intended way to start building. Each seam names the packs that can replace its default when the product needs the real thing, and the setup report tracks exactly which seams still run on defaults.
Which providers can plug in?
Sign-in: Supabase, Clerk, or Firebase. Database: Supabase, Firebase, or Cloudflare. Payments: Stripe or Whop. Email: Resend or Mailgun. Analytics: GA4 or PostHog. Errors: Sentry. Hosting: Vercel or Cloudflare. AI features: OpenAI, Claude, or Gemini. Every listed pack is included with the license.
Should I use this pack or a vendor pack first?
Starting a new product from nothing: this pack. Adding one capability to an app you already have: that vendor's pack directly. The shell is the start-from-zero entry point; the vendor packs integrate into any app, including this one.
Does the pack expose its source code on this website?
No. The directory shows file paths, purposes, languages, and line counts so you can evaluate the pack. Source contents are a paid Boost OS perk; your AI agent installs them for you after license verification.
Add the App shell card to your collection
One $199 license includes every current and future production code pack.
Get Boost OS