# Kennismaking Zakelijk Algemeen with Martijn Euyen

> Met dit agenda item maak je gebruik van mijn aanbod voor een gratis kennismakingsgesprek. We brengen je uitdaging samen in kaart. Hebben we een match? Dan is dit mogelijk de basis voor vervolgstappen.

- Host: Martijn Euyen
- Duration: 60 min
- Location: Attendee phone number
- Host time zone: Europe/Amsterdam
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/martijn-euyen-cnu4sj/kennismaking
- Event type id: 2494366

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2494366&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": 2494366,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeePhone",
    "phone": "…"
  },
  "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.
- `location` is required: `location.phone` is the attendee’s own.