# Intro call with Tomislav Mihelić

> A short call to get to know each other, clarify your topic and see whether working together makes sense. We meet on Google Meet, or by phone if you prefer. More on data handling: Privacy

- Host: Tomislav Mihelić
- Duration: 20 min
- Location: Google Meet, Attendee phone number
- Host time zone: Europe/Zagreb
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tomislavmihelic/intro-call
- Event type id: 7748586

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7748586&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": 7748586,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "what-brings-you": "…",
    "source": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email), `what-brings-you` (What decision or situation brings you here?)
- Optional fields: `source` (How did you hear about me?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is optional; without it the booking uses the event’s first location.