# Call with Derek Schmitz with Derek Schmitz

> Hi there, please select a time for a phone call with me.

- Host: Derek Schmitz
- Duration: 10, 15, 30, 45, 60 min
- Location: Attendee phone number
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/derekischmitz/call
- Event type id: 1927070

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=1927070&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": 1927070,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 15,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeePhone",
    "phone": "…"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "scheduler-initials": "…",
    "meeting-snyopsis": "…",
    "prns": "…",
    "call-rec": "…",
    "notes-optin": "…"
  }
}
```

- Required fields: `name` (Your name), `scheduler-initials` (Please provide your first & last initials in the format: FL), `email` (Email address), `meeting-snyopsis` (What do you need to discuss? Please provide a draft agenda, specific questions, or some form of context for the meeting request. Failure to do so will result in the cancellation of the meeting.), `prns` (What are your pronouns?), `call-rec` (Please indicate whether or not a recording can be made of this call.), `notes-optin` (Would you like a copy of the meeting notes and summary after the call?)
- 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.
- `location` is required: `location.phone` is the attendee’s own.
- `lengthInMinutes` picks one of 10, 15, 30, 45, 60; pass the same value to the slots request as `duration`.