The simplest platform for building with AI.

Paste one prompt into the AI you're building with. It builds your app on cubek and puts it online, with a database, live queries, tasks, storage and your domain.

For your agentCopy this and give it to the AI you're building with.

Build this with cubek (https://cubek.dev).
1. Install the CLI: curl -fsSL https://cubek.dev/install | sh
2. Run `cubek skill` and read all of it before writing code; it covers cubek's TypeScript subset, database and deploy. If this project already exists, port it the way the Skill describes.
3. Run `cubek login`, show me the URL it prints, and wait; it finishes on its own.
4. Keep `cubek check` and `cubek test` clean, deploy with `cubek deploy --prod`, and reply with the live URL.
No shell? Read https://cubek.dev/SKILL.md in full instead.

Prefer the terminal?

curl -fsSL https://cubek.dev/install | sh
cubek init my-app && cd my-app
cubek login
cubek deploy --prod

Start building free Read the docs

Built in

Everything an app needs, nothing to wire.

No add-ons, no connection strings, no YAML. The primitives are part of the runtime and typed in your editor.

my-app / production Online

my-app

my-app.cubek.app

r1 deployed just now

database

SQLite · 3 tables · 1.2 MB

A database per app

SQLite typed from schema.ts, migrations applied on deploy, full-text search, point-in-time restore.

db.notes.find({ limit: 20 })

Live queries

Pages update when the data they read changes. No sockets to wire, no cache to invalidate.

useQuery(notesQuery, { q })

Tasks and cron

Background jobs with retries and delays, cron schedules in UTC, a queue you can inspect.

task.schedule("digest", "0 8 * * *")

File storage

Uploads and blobs next to your data, with signed, expiring URLs for the browser.

storage.put(key, bytes)

Custom domains

Point a CNAME, get a certificate. www and apex redirects in one command.

cubek domains add example.com

Nothing to operate

Failover, backups, point-in-time restore and certificates are handled for you. It scales with your app.

cubek db restore --to 10:00

Made for agents

Your agent already knows how.

cubek is small enough to fit in a prompt. The whole platform is one Skill your agent reads once; the CLI is an MCP server it can drive.

The Skill: about 4K tokens that teach routes, data, templates, tasks and deploys. Read it.
MCP server: check, deploy, logs, SQL and the exact API types as tools.
Errors carry the fix: every compiler error names its canonical form, so agents correct themselves.

src/app.tsx

import { app, db } from "cubek"
import { Home } from "./pages/home"

app.get("/", async (c) =>
  c.render(<Home notes={await db.notes.find({ limit: 20 })} />))

app.post("/notes", async (c) => {
  const body = await c.body<{ title: string }>()
  const note = await db.notes.insert({ title: body.title })
  return c.redirect(`/notes/${note.id}`, 303)
})

Pricing

Free, for real. Custom when you outgrow it.

Two plans. No credit card, no trial clock, no surprise invoices.

Free

Generous by design

Everything the platform does, with limits most apps never reach.

Projects: 50
Database: 1 GB each, 5 GB total
File storage: 5 GB
Requests: 200/s (≈500M/month), no sleeping
Egress: 150 GB/month
Background task runs: 600/min
Custom domains: 10 per project
Point-in-time recovery: 7 days

Custom domains with TLS, backups and failover included.

Start building free

Custom

Let's talk

For teams and products that need more than Free.

Limits sized to your workload
Dedicated capacity
Point-in-time recovery up to 30 days
Direct line to the engineers

Ship your next idea today.

Start building free Read the Skill