# ExpertPractice Demo with Caleb

> A free, 30-minute walkthrough of ExpertPractice with the founder. We'll cover how case management, time tracking and invoicing work together, and leave time for your questions. We'll use sample data only, so please don't send or share any real case details. No obligation, and no sales pressure. If you'd rather explore on your own first, you can start a 14-day free trial at myexpertpractice.com.

- Host: Caleb
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/caleb-ufcym3/expertpractice-demo
- Event type id: 7537550

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7537550&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": 7537550,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

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