# 30-Minute-Meeting with Nils Vinje

> A 30-minute working session for CEOs ready to grow. No deck. No pitch. What we'll cover: 1. Where you're at with your business right now and what's blocking growth 2. What we've seen actually work for businesses in your space 3. Whether it makes sense for us to keep talking. If it's not a fit, I'll tell you on the call, and we both move on.

- Host: Nils Vinje
- Duration: 30 min
- Location: Zoom Video
- Host time zone: America/Phoenix
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/nils-vinje/30-minute-meeting
- Event type id: 2887739

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2887739&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": 2887739,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `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.