# 30 minutes call with Viktor Schiller

> Let’s talk about your startup needs, roadmap, and obstacles. Book your 1:1 Startup Session with me and get clear next steps, relevant introductions, and insights from the Futury ecosystem. You can send me files like pitchdecks in advance.

- Host: Viktor Schiller
- Duration: 30 min
- Location: MS Teams
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.eu/viktor-futury/30min
- Event type id: 309340

## Check availability

```http
GET https://api.cal.eu/v2/slots?eventTypeId=309340&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.eu/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 309340,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…",
    "Hilfe": "…",
    "title": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `notes` (Bitte gib mir einen groben Überblick über Deine Idee), `Hilfe` (Wie kann ich Dich unterstützen?)
- Optional fields: `title` (Zusätzliche Notizen), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.