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braincell.sh
Tutorials

Build something real, step by step.

The fastest way to learn the agent loop is to ride along on a project. Each tutorial below ends with a deployed URL, yours to keep.

Beginner

Build a Pomodoro timer

Your first braincell project. From one sentence to a deployed timer with persistent settings.

12 minOpen
Intermediate

Ship a Kanban board to production

Drag-and-drop, optimistic state, Postgres-backed cards. Ends with a live URL.

20 minOpen
Beginner

Deploy with a custom domain

Take a *.vercel.app project to your own domain: DNS, SSL, automatic redirects.

8 minOpen
Intermediate

Use Universal Key for your apps

One API key, every frontier model. Drop into your stack with the OpenAI SDK.

6 minOpen
Advanced

Build straight from a GitHub repo

Import an existing repo, let the agent extend it inside a sandbox, push back as a PR.

10 minOpen
Intermediate

Replace a SaaS subscription with an internal tool

Describe the workflow, hook up SSO, ship to your team. No procurement review required.

15 minOpen

Or just start typing.

The agent works best with a real idea. Skip the tutorials, ship your project, come back when you need a specific recipe.

10 free credits on signup. No credit card.