The base framework
jst
the build stageThe agent-proven SvelteKit starter you scaffold a new app on.
npm installnpm run devUse the repo as a GitHub template to spin up a new app, then install and run. It boots with an empty environment — no database or auth required to start.
01 · What it is
A stack you can read in an evening
jst is the public base framework of the jatstack — the
readable SvelteKit starter you scaffold a new app on. It is deliberately
small (~50 files): SvelteKit 2 + Svelte 5, Tailwind 4,
DaisyUI 5, and jatstack's
own jatui component set, all typed, with a database
and auth layer included but dormant until you switch them on.
Small on purpose: you can read the whole template end to end, and that is the point. Build on a stack you actually understand — one a fleet of coding agents can navigate end to end without guessing. It occupies the Build stage of the loop: the thing you scaffold, then hand to jat's agents to grow.
Proven in production: the same baseline underpins real jatstack apps shipping today. MIT-licensed and public — clone it, read it, keep what you need.
02 · What's in the box
A baseline, not a boilerplate maze
SvelteKit 2 + Svelte 5
Runes, the current router, server + client in one framework.
Tailwind 4 + DaisyUI 5
Utility CSS with a semantic component/theme layer on top.
jatui
The shared jatstack component set — the same primitives this site is built from.
TypeScript + vitest
Typed end to end, with a test runner already wired.
Drizzle + Postgres
dormantA typed data layer — included but dormant until you set DATABASE_URL.
Better Auth
dormantEmail/session auth and a /login route — dormant until the database is on.
03 · Usage
Scaffold now, add data when you need it
Scaffold
# use as a GitHub template, then:npm installnpm run devBoots with an empty environment. Visit /notes to see the example module.
Add a database
cp .env.example .env # set DATABASE_URL + BETTER_AUTH_SECRETnpm run db:generate && npm run db:migratenpm run devSetting DATABASE_URL turns on the data layer, auth, and the /login route.
How it fits
The floor the apps stand on
jat orchestrates the agents; jst is what they build on. Scaffold an app from the template, then fan a fleet of agents across it — a stack small enough to read is a stack an agent can change safely. It is the Build stage between planning the work and shipping it.
See how the stack fits togetherThe full template, its example module, and setup on GitHub.
View on GitHub