01·Your application
Frontend
What your customers see and click.
Skip auth, billing, and setup. Go straight to your idea.
A booking app with team accounts and payments
We scaffold your apps. You keep building on your computer.
Every line is yours.
Built by the maintainer of battle-tested open-source infrastructure
You can building with a single command, the template is completely free.
One command scaffolds Backend, Frontend, Admin panel, a desktop build, a mobile app, and a browser extension. Code, CI, and local infrastructure already wired. Open source.
Get features like authentication, organizations, billing, teams, notifications and many more. Every line is yours to keep.
Same mental model as shadcn.
Hand your agent the MCP server and let it build the whole thing on its own.
01·Your application
What your customers see and click.
02·Your functionality
What runs behind your system logic.
03·Your analytics
What you watch to run the business.
04·Your pocket
What they carry on iOS and Android.
05·Your shortcut
What sits one click from any tab.
Not a developer? You can still build the whole thing.
The rules keep your agent inside conventions a professional team would recognize. The day you hand this to a real developer, they open a normal repo with types, tests, and lint rules. Nothing to untangle, nothing to rewrite.
Stop building from scratch. Start building on-brand. Swap the whole look in one move: colors, radius, and type.
Try it outEvery string is a typed Paraglide message: add a locale file for any language on Earth and the whole product follows.
One command ships everything: web apps and services on your own hosting, the mobile app through EAS, the extension to the stores. No dashboards, no YAML.
launch sequence
one command
The best SaaS starter
1st
Real captures from the shipped templates: Vault, Aether, Mind Map, Open Calendar and Better Studio. Different products, same repo, one command apart.
Backend, frontend, and database, wired end to end. You build the part that's yours.
Every card is days or weeks of work you skip. UI, APIs, and admin panels, wired together and tested.
Authentication
Login, signup, OAuth, sessions, password reset. Your users sign in on day one and you never build another auth form.
Billing
Stripe checkout, subscriptions, and customer portal, webhooks included. You can charge money the day you launch.
Pick the one that sounds like you.
Prompt your way to a shippable app.
The template is tuned so coding agents stay on the rails, land correct code faster, and burn fewer tokens doing it.
One ruleset. Every tool reads it.
Cursor
.cursor/rules
T3 Code
AGENTS.md
Claude Code
.claude/rules
Copilot
.github/instructions
Rolldown, oxlint, and Lightning CSS are all written in Rust. Lint, build, and typecheck feel instant, so you stay in flow and your agent's retry loop is basically free.
Then we stack features on top
The rules teach your agent the file layout, the conventions, and the gotchas before it writes a line. So it lands code that fits on the first try, instead of burning three attempts, your tokens, and your review time.

Rules for every corner of the stack
Backend routes flow straight into the frontend SDK. Rename a field and every broken call turns red in your editor, not in production. Your agent can't invent endpoints that don't exist.
const user = await sdk.users.getProfil()
Property 'getProfil' does not exist.
Did you mean 'getProfile'? Backend renamed it 4s ago.
Start free with the CLI and base template. Add premium packs as you need them, or grab an All-Access license for 12 months.
For everyone getting started. The CLI, base template, Rust-based toolchain, and free packs. Open source forever.
For independent pros and solo founders. Full access to every premium pack and template for 12 months.
Every pack and template, one license.
For teams and companies. The full library for your whole team, plus custom modules and direct mentoring from the author.
The short version: the template is free and yours, the packs are how we fund it. The long version is 11 questions covering licensing, updates, and what it takes to run.
AI app builders got the speed right. We keep it and hand you the keys.
Start free and own every line you ship. When you want more, one All-Access license unlocks every premium pack and template for a year.