# Free 15-minute Fit Check with Alternate Machines

> Bring one repeated task that wastes time, causes delays or keeps getting stuck. We’ll ask a few practical questions, explain whether it looks suitable for an Alternate Machines Workflow Decision and agree the most sensible next step. This is a short suitability call, not a free process audit. Please do not include confidential information, customer records, financial details, passwords or security information in your booking.

- Host: Alternate Machines
- Duration: 15 min
- Location: Cal Video
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/alternate-machines/15min
- Event type id: 6587726

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6587726&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": 6587726,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Business-or-organisation-name": "…",
    "title": "…",
    "source": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Business-or-organisation-name` (Business or organisation name), `title` (Which repeated task would you like to improve?)
- Optional fields: `guests` (Add guests), `source` (What prompted you to book?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.