The idea
Clinics lose appointments to phone tag. Relai moves booking to the channel patients already use: patients book, reschedule and cancel over WhatsApp, and the clinic gets an admin panel over the top of it.
What's in it
- WhatsApp integration via Baileys multi-device — scan a QR to connect
- AI replies — OpenAI, Anthropic, or any OpenAI-compatible endpoint
- Three reply modes — auto (AI replies immediately), semiauto (AI drafts, a human approves), and manual (reply from the admin panel)
- Admin dashboard — a React SPA covering status, setup, settings, a unified message view, and password management
- Automatic reminders ahead of appointments
- Rate limiting on all routes
On handling clinic data
Two choices drove the design. First, the reply mode is per-conversation rather than global — a clinic can let the assistant handle routine booking while a human keeps the thread on anything sensitive, without switching the whole system into manual.
Second, credentials never sit in plaintext: API keys and configuration are encrypted at rest in SQLite, so a copy of the database file isn't a copy of the clinic's provider accounts.
Stack
Bun and Hono on the server, Baileys for the WhatsApp transport, Drizzle over
SQLite for storage, Valibot for validation, jose for JWT auth and pino for
logging. The admin client is a React SPA built with Vite.
