Work · AI product

Baristalk

Scan a table QR, speak your order in any language, it lands on the counter priced and paid.

Status

Live

Years

2026

Links

baristalk.com

What it is

A multi-tenant voice ordering product I built in five days and piloted at my own café. Guests talk to a Gemini Live barista grounded in that business's menu, in Kannada, Hindi, English or whatever they speak. The order appears on a staff tablet as an accept, prepare, pay card. All menu, persona, languages, currency and geofence settings come from per-tenant configuration, never from code.

What was hard, or unusual

• The system prompt, voice and tools are locked into a single-use ephemeral token on the server. The browser connects to Gemini directly but can never read or alter the prompt.
• Prices are never computed by the model. The order tool sends item ids and the server prices them from the live catalog.
• Voice minutes are metered as the unit cost, which is what prices the product.

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