> Documentation index: https://stilldeeppos.com/llms.txt

# Vibe-code your point of sale, the engine is built

> StillDeep is a headless point of sale with business logic, security, reports and communication built. Vibe-code the screen with Claude, Codex or Cursor.

Source: https://stilldeeppos.com/

## Vibe-code your POS in minutes. The rest is built.

Business logic, security, reports and communication are done. Describe your screen to Claude, Codex or Cursor: your agent reads our docs, plugs into the gRPC contract and ships a register that sells, even offline.

Still waters run deep. A simple surface your agent codes in minutes, and a deep foundation already built underneath: StillDeep handles everything a register needs, so your team only designs the screen your business deserves.

## Already done for you
### Business logic
Sales, Canadian sales taxes, discounts, split payments, refunds, reservations, ticketing with seats, rentals, appointments and shifts. The engine re-checks every sale, whatever the screen sends.
### Security
Registers never touch the database, the server validates every input, receipts and tickets carry signed codes checked offline, and permissions follow each role. Hybrid post-quantum is in progress.
### Reports
The Report web app shows sales by day and period, shifts, taxes, top products, inventory and employees, with a transaction audit. Shift summaries, sales by payment method and tips also come over gRPC for your own dashboards.
### Communication
Offline first: each register keeps an outbox and syncs with the business server when the network comes back. Live events, chat between registers and an optional local AI assistant.

## Who it is for
### Developers and vibe coders
A serious point-of-sale engine behind your agent: no taxes, offline sync or printing to rebuild once more.
### Recreation and tourism
Parks, sugar shacks, ski hills, mini-golf, escape rooms, cinemas and shows, self-service kiosks.
### Retail
Stores with inventory, barcodes, lots and expiry dates, products sold by weight.
### Services by appointment
Grooming salons, hair salons, workshops, with qualified staff and an agenda.

## How it works
### Install the server
One server per business: a PostgreSQL database, the Admin web app to configure everything and the Report web app for the numbers.

### Give StillDeep to your agent
Paste the prompt above, or connect the read-only docs MCP server. Your agent reads the guide, the skill and the `.proto` files, then writes the screen in the language you choose.

### Sell
Run the screen on the register: it syncs with the server and keeps selling on its own when it has to.

## What is ready today

StillDeep is in development (version 0) and no customer is deployed yet.
### Built and tested
The sales engine, offline synchronization, the database proxy, receipts and printing, the receipt designer, extensions and the Admin.
### In progress
Hybrid post-quantum security.
### Planned
Docker packaging and signed per-register license activation.

The [architecture page](/architecture) tells exactly what is delivered and what is not.
## Ready to vibe-code your register?
Create your account now: it takes one minute and lets you buy your licenses when you are ready. [Create an account](/signup) or [read the documentation](/docs).