Voice · Bookings
AI voice receptionist with calendar booking
Aria, a Vapi voice agent running GPT-4.1 with Deepgram transcription and an Elliot voice, picks up the call. When the caller wants to book, the agent calls an n8n tool over webhook — n8n checks your Google Calendar for the next free slot and writes the booking back. Caller is on the line for under 60 seconds.
Stack in this flow
Vapi
Voice agent — Deepgram + GPT-4.1 + Elliot voice
n8n Webhook
Receives tool calls from the agent
Google Calendar
Free/busy + event creation
OpenRouter
Backend reasoning model
What makes it production-ready
01
Real-time conversation
Sub-1s response latency. Caller never knows they're talking to an automation.
02
True calendar awareness
Checks free/busy live before offering slots — no double-bookings, no calling back to confirm.
03
Polite handoff
When intent is outside scope, the agent gracefully transfers with a written summary of the call.
04
Audit-friendly
Every call has full transcripts, recordings, and tool-call logs — compliance and QA stay happy.
Want one built for you?
I build workflows like this end-to-end — scoping, infrastructure, agent prompt, evals, the lot.