# Free 15-Minute Discovery Call with Alex Poolman

> A quiet, personal conversation about what you want to create.

- Host: Alex Poolman
- Duration: 15 min
- Location: Zoom Video
- Host time zone: Europe/Amsterdam
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/alex-poolman/discovery-call
- Event type id: 6040371

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6040371&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": 6040371,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Who-am-I": "…",
    "Who-would-I-like-to-be": "…",
    "Why-am-I-not-that-person-yet": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Who-am-I` (Who am I?), `Who-would-I-like-to-be` (Who would I like to be?), `Why-am-I-not-that-person-yet` (Why am I not that person yet?)
- 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.