# Intro Call — Roelu with Robert from Roelu

> Quick fit call to see if we're right for each other. We build custom websites your team runs without a developer — change pages, launch campaigns, publish in any language, all from one dashboard. Built on Next.js + Sanity.

- Host: Robert from Roelu
- Duration: 20 min
- Location: Google Meet
- Host time zone: Europe/Bratislava
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/robert-roelu/intro-call
- Event type id: 5102587

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5102587&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

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 5102587,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Your-website-or-LinkedIn": "…",
    "What-are-you-looking-to-do": "…",
    "budget": "…",
    "What-made-you-reach-out-now": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Your-website-or-LinkedIn` (Your website or LinkedIn), `What-are-you-looking-to-do` (What are you looking to do?), `budget` (I understand projects start at $25K — and that's in range of what I'm planning for)
- Optional fields: `guests` (Add guests), `What-made-you-reach-out-now` (What made you reach out now?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.