# Intro Call with Gergő Cserba

> If you can't find a convenient time due to scheduling or time-zone conflicts, please email gergo.cserba@gmail.com and we'll sort something out. If you'd rather send your questions by email, reach me at gergo.cserba@gmail.com for a same-day response. Please share anything that would help me prepare for our call. This call is reserved for those interested in my services. All other inquiries should go to gergo.cserba@gmail.com.

- Host: Gergő Cserba
- Duration: 15, 30 min
- Location: Google Meet
- Host time zone: Europe/Budapest
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/gergocserba/30min
- Event type id: 3744344

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3744344&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": 3744344,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 30,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "notes": "…",
    "budget": "…",
    "find": "…",
    "title": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `notes` (What exactly do you need help with?), `budget` (What's your total budget for this project?), `find` (How did you find us?)
- Optional fields: `title` (Website/App link (if applicable))
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `lengthInMinutes` picks one of 15, 30; pass the same value to the slots request as `duration`.