# 45-minute Discovery Call with Rimbout Bobeldijk

> Hey there! This call is an opportunity for us to connect and determine if we’re the right fit for your project. During our call, we’ll explore your goals and vision. If it feels like a great match, we can chat about next steps.

- Host: Rimbout Bobeldijk
- Duration: 45 min
- Location: Google Meet
- Host time zone: Europe/Amsterdam
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/rimbo-designs/45-minute-discovery-call
- Event type id: 3898903

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3898903&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": 3898903,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Time-for-a-short-questionnaire": "…",
    "smsReminderNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Time-for-a-short-questionnaire` (Time for a short questionnaire to help make our meeting more focused and valuable?)
- Optional fields: `smsReminderNumber` (Phone number (Text notifications)), `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.