# Consulting – 60 min with Adam Zielonko

> I'm sharing my 12+ years of experience to help you tackle product challenges. Together, we can analyze pain points, identify low-hanging fruit, and establish actionable steps. I can offer feedback on your product’s design, including its design language and user experience, throughout the entire product lifecycle—from discovery to delivery. If an NDA needs to be signed before the meeting, please send it to adam@zielon.co in advance.

- Host: Adam Zielonko
- Duration: 60 min
- Location: Zoom Video
- Host time zone: Europe/Warsaw
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/adam-zielonko/60
- Event type id: 2182723

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2182723&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": 2182723,
  "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.