# Rücksprache with Tino Werner

> Zeit für alles, was sich schlecht per Mail klären lässt – Rückfragen zur laufenden Abrechnung, Personalthemen, Sonderfälle oder einfach ein kurzer Abgleich. Wenn Unterlagen relevant sind, gern vorab per Mail. Dann haben wir die Zeit für die eigentliche Frage. Eilige Sachen bitte direkt per Mail oder Telefon, nicht über diesen Kalender.

- Host: Tino Werner
- Duration: 15, 25, 45 min
- Location: Cal Video
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tino-werner-cnwnhp/ruecksprache
- Event type id: 6731346

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6731346&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": 6731346,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 25,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `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, 45; pass the same value to the slots request as `duration`.