# Wilhelm Kielland – Cal.com booking page

> Get more sales from the customers you already have. Wolve helps DTC brands turn first-time buyers into repeat customers through loyalty programs and automated follow-ups.




Book a call to explore what could bring more customers back to your store.

Booking page: https://wolve-ai.cal.com/wilhelm

## Event types

- [Meeting: Wilhelm Kielland](https://wolve-ai.cal.com/wilhelm/meeting-wilhelm-kielland-30): 30 min, confirmed instantly, event type id 391404. Details: https://wolve-ai.cal.com/wilhelm/meeting-wilhelm-kielland-30.md
- [Meeting: Wilhelm Kielland](https://wolve-ai.cal.com/wilhelm/meeting-wilhelm-kielland): 15 min, confirmed instantly, event type id 386276. Details: https://wolve-ai.cal.com/wilhelm/meeting-wilhelm-kielland.md
- [30 min meeting](https://wolve-ai.cal.com/wilhelm/30min): 30 min, confirmed instantly, event type id 279662. Details: https://wolve-ai.cal.com/wilhelm/30min.md

## Check availability

```http
GET https://api.cal.eu/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.eu/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

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