# Willem – Cal.com booking page

> Book a meeting with Willem on Cal.com.

Booking page: https://cal.com/holdthecrust

## Event types

- [Quick Chat](https://cal.com/holdthecrust/30min): 25 min, confirmed instantly, event type id 7195064. Hey! Let's jump on a casual call and discuss what you're looking for. No prep needed. Details: https://cal.com/holdthecrust/30min.md
- [Longer Chat](https://cal.com/holdthecrust/15min): 45 min, confirmed instantly, event type id 7195063. You're on your 4th coffee. You could talk for days. But I only have an hour. Make it count. Details: https://cal.com/holdthecrust/15min.md

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&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

Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.com/docs/api-reference/v2/introduction