← Index/02 — 12

Sentra.

A voice agent you can actually talk to.

Sentra.
Year
2026
Role
Product · Engineering
Stack
Vite · React · Web Speech API
Type
AI · Voice · Editorial

The project

An editorial-styled voice agent that takes coffee orders end-to-end in the browser: speech-to-text, intent + slot-filling dialogue, spoken replies, and a live waveform mic orb — no backend, no API keys.

View concept site ↗Launch working app ↗

What we built

  • 01STT/TTS wrappers over the Web Speech API with graceful fallbacks
  • 02Intent engine with slot-filling context (drink, size, milk) and an order store
  • 03AnalyserNode waveform visualization on the mic orb
  • 04Typed React architecture converted from vanilla, strict TS
Next project
Ledgerline↗