# Gustafian D – Cal.com booking page

> I design modern, conversion-focused SaaS interfaces and marketing websites that not only look great, but help users understand, trust, and convert. No generic templates. No messy handoff. Just clean, scalable, and developer-ready designs.

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

## Event types

- [15 Min Meeting](https://cal.com/gustafiande/15min): 15 min, confirmed instantly, event type id 3804700. Details: https://cal.com/gustafiande/15min.md
- [30 Min Meeting](https://cal.com/gustafiande/30min): 30 min, confirmed instantly, event type id 3804702. Details: https://cal.com/gustafiande/30min.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