# ℹ️ Live Q&A with Marc Kleinmann with Marc Kleinmann

> A free 30-minute live call every Wednesday. Bring one question about using AI in your business, and I’ll answer it live, in plain English. I'll email you the link, and you'll get the weekly newsletter too. Unsubscribe in one click.

- Host: Marc Kleinmann
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/marckleinmann/live-qa
- Event type id: 7551190

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7551190&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": 7551190,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- 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.