# 20 minuten verkennend gesprek with Herman Verschuren

> Wil je meer rust en regie in je werk of onderzoeken wat jouw team nodig heeft? Of wil je mij uitnodigen als spreker? In een online gesprek van 20 minuten bespreken we je vraag. Ik luister, denk met je mee en vertel hoe ik werk. Zo kun je bepalen of mijn begeleiding of verhaal aansluit bij wat je zoekt.

- Host: Herman Verschuren
- Duration: 20 min
- Location: Cal Video
- Host time zone: Europe/Amsterdam
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/core14/20-minuten-verkennend-gesprek
- Event type id: 5735225

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5735225&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": 5735225,
  "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.