# The Session with Piotr Mechliński

> 60 minutes, one on one, online. Bring the decision, the person, or the pattern you keep repeating. One hour, one problem, worked through with someone who has sat where you sit and knows what the room does to your judgment. No package and no minimum. Any topic you decide under pressure.

- Host: Piotr Mechliński
- Duration: 60 min
- Location: MS Teams
- Host time zone: Europe/Warsaw
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/piotr-mechlinski/the-session-60min
- Event type id: 6993788

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6993788&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": 6993788,
  "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.