# Host Tools API call with Tom Krones

> For property managers, cohosts and software companies who want to use the Host Tools API or MCP server. Tell me what you're building or what you want your AI to run, and I'll connect a test account live on the call so you can see real Airbnb, VRBO and Booking.com data. Connecting is risk-free: your listings come in switched off, so nothing touches your calendar or your guests until you turn one on.

- Host: Tom Krones
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/hosttools/host-tools-api
- Event type id: 7795584

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7795584&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": 7795584,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "listing_count": "…",
    "What-are-you-using-today": "…",
    "smsReminderNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `listing_count` (How many listings do you manage?), `What-are-you-using-today` (What are you using today?)
- Optional fields: `smsReminderNumber` (Phone number (Text notifications))
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.