# Introduction or consultation, or an interview. with Konstantin Gredeskoul

> This scheduling app allows bookings from 30 minutes up to four hours. Please connect with me via email or LinkedIn before booking. Any meetings longer than 30 minutes without prior mutual confirmation of intent will be declined.

- Host: Konstantin Gredeskoul
- Duration: 30, 60, 120, 240 min
- Location: Google Meet, Local on site meeting in San Francisco or down Silicon Valley if the location was agreed in advance., Potrero Hill — Chez Maman, My personal Zoom Meeting Room, however if you have your own please provide it instead.
- Host time zone: America/Los_Angeles
- Confirmation: The host confirms each booking; it stays pending until they accept it.
- Booking page: https://cal.com/kigster-sf/connect
- Event type id: 5157776

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5157776&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": 5157776,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 30,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "title": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `attendeePhoneNumber` (Phone number), `title` (What is this meeting about?), `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.
- `location` is optional; without it the booking uses the event’s first location.
- `lengthInMinutes` picks one of 30, 60, 120, 240; pass the same value to the slots request as `duration`.
- A successful response is a pending booking request.