# Helixum – Cal.com booking page

> Book a meeting with Helixum on Cal.com.

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

## Event types

- [15-minute discovery call](https://cal.com/helixum/15min): 15 min, confirmed instantly, event type id 7523914. A quick introduction to discuss your business, website needs, and goals. We’ll see whether Helixum is a good fit and outline the best next steps. No preparation needed—just bring your ideas. Details: https://cal.com/helixum/15min.md
- [30-minute project discussion](https://cal.com/helixum/30min): 30 min, confirmed instantly, event type id 7523915. Let’s explore your project in more detail, including features, design direction, timeline, and budget. Whether you’re launching a new website or improving an existing one, we’ll clarify the scope and what it will take to move forward. Details: https://cal.com/helixum/30min.md
- [60-minute working session](https://cal.com/helixum/60-minute-working-session): 60 min, confirmed instantly, event type id 7523935. A focused, hands-on session for existing clients to review progress, work through feedback, troubleshoot issues, or plan the next phase of a project. Please share any relevant links, files, or discussion topics beforehand so we can make the most of our time. Details: https://cal.com/helixum/60-minute-working-session.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