# Your custom Callura demo — 15 minutes with Callura

> See how Callura’s AI virtual assistant can handle calls for your practice in a free, 15-minute walkthrough with a founder. If you’d like us to prepare a tailored demo before the call, add your practice website when booking. It’s optional—you can book without it, and we can look at your website together during the call. We’ll explore your call-handling needs and confirm how Callura could work with your practice software and booking rules.

- Host: Callura
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/callura/15minutes
- Event type id: 3894579

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3894579&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 3894579,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…",
    "practice_website": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `guests` (Add guests), `practice_website` (Practice website (optional))
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.