# Marko Arsić – Cal.com booking page

> Independent Tech Consultant / Helping companies set up teams and standardize the development process

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

## Event types

- [Project Consulting](https://cal.com/marsicdev/project): 30, 45, 60 min, confirmed instantly, event type id 233660. Details: https://cal.com/marsicdev/project.md
- [Education](https://cal.com/marsicdev/edu): 45 min, confirmed instantly, event type id 239045. Consultation for everyone interested in HypeTech Education programs Details: https://cal.com/marsicdev/edu.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