# Commslayer Support with Mitchel Swanson

> Stuck or experiencing some trouble? Book a support call with your friendly neighbourhood CSM. Please have your issues ready on hand and we'll review together

- Host: Mitchel Swanson
- Duration: 15, 25 min
- Location: Google Meet
- Host time zone: Europe/Lisbon
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://commslayer-helpdesk.cal.com/mitchel/commslayer-support
- Event type id: 5867452

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5867452&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": 5867452,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 15,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…",
    "Store-name-or-account-ID": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `notes` (What's this meeting about?), `Store-name-or-account-ID` (Store name or account ID)
- Optional fields: `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.
- `lengthInMinutes` picks one of 15, 25; pass the same value to the slots request as `duration`.