# FirstWin Intro Call with Andrew Kushinsky

> We'll pick one repetitive task in your business, work out what it's actually costing you, and I'll show you exactly what I'd automate first. Come with something specific in mind, or just tell me where the busywork is and we'll find it together.

- Host: Andrew Kushinsky
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/andrew-firstwin/intro-call
- Event type id: 6379044

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6379044&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": 6379044,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Business-name": "…",
    "Business-website": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Business-name` (Business name)
- Optional fields: `Business-website` (Business website), `notes` (A specific automation in mind, or here to learn what's possible? (If specific, tell us below.)), `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.