# Project fit call (30 min) with Alex Prokhorov

> This call is intended for active product teams. I review each request to confirm fit before accepting.

- Host: Alex Prokhorov
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Moscow
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/alexp/30min
- Event type id: 101098

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=101098&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": 101098,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "What-are-you-building": "…",
    "What-kind-of-help-are-you-looking-for": "…",
    "Budget-range": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-are-you-building` (What are you building?), `What-kind-of-help-are-you-looking-for` (What kind of help are you looking for?), `Budget-range` (Budget range)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.