Appointment booking by phone with an AI voice agent
For clinics, salons, workshops and any business that takes bookings by phone: an agent on your existing number answers, offers the hours and slot lengths you gave it, and creates the appointment. You pay per second of the call from a prepaid balance; the phone line is your own trunk at carrier cost.
Last updated
How it is built
- 01POST /v1/sip-trunks
Connect the trunk your number already lives on and point its inbound route at the platform.
- 02POST /v1/agents
Create the receptionist: a prompt with your services, the hours and slot lengths it may offer, and a voice engine.
- 03GET /v1/appointments
Each booking the agent makes is an appointment you can list, read and cancel through the API.
- 04GET /v1/calls/{id}
Read the transcript and outcome of every call, and delete the ones you do not need to keep.
The engine to use
classic, $0.0867 per connected minute. English bookings need accurate names and dates; Nova-3 transcription with GPT-4o-mini is the cheapest reliable pairing. Switch the stt language for other languages, or the sarvam engine for Indian ones.
What it costs
Engine time for 3-minute calls on the classic engine, at typical speech rates. Telephony is your own trunk at your carrier’s rate and is not included; the meter charges per second, so shorter calls cost proportionally less.
| Calls per month | Connected minutes | Engine cost per month |
|---|---|---|
| 200 | 600 | $52.02 |
| 1,000 | 3,000 | $260 |
| 5,000 | 15,000 | $1,301 |
Prepaid: add credit from $5 and the calls spend it. Estimate your own mix.
Frequently asked questions
- Can a Wixzel Phone agent book appointments over the phone?
- Yes. An agent created with POST /v1/agents is told in its prompt which hours and slot lengths it may offer, and books into the appointments resource during the call. The booking is readable through GET /v1/appointments as soon as the call ends.
- Can the agent answer calls on my existing phone number?
- Yes, if that number is on a SIP trunk you can route. Point the trunk's origination URI at the platform and inbound calls reach the agent. Wixzel Phone does not port or sell numbers.
- What does a three-minute booking call cost?
- About 0.260 dollars on the classic engine, plus your carrier's per-minute rate for the trunk. The meter charges per second, so a shorter call costs proportionally less.
- Can the agent hand off to a person?
- The agent can end the call with a summary and an outcome that your system acts on, and the transcript is available immediately. Live transfer to a human mid-call is not a feature of the alpha API.
Other uses
Upload leads, start a campaign, and have an agent call each one over your own SIP trunk, ask your qualifying questions, and record the outcome per lead.
Answer a support number with an agent that reads from a knowledge base you upload, handles the common questions, and leaves a transcript of every call.
Run phone agents in Indian languages on models built for them, with the sarvam engine covering speech-to-text, the language model and text-to-speech end to end.
Operator, prices, limits, refunds and data location, on one page.