# Projekt besprechen with Lucas von Puttkamer

> Ein kurzes Gespräch über Ihre Website oder einen Ablauf, den Sie entlasten möchten. Sie erzählen kurz, worum es geht, ich sage Ihnen ehrlich, was sinnvoll ist und wie der nächste Schritt aussieht.

- Host: Lucas von Puttkamer
- Duration: 15 min
- Location: Google Meet
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/lucas-von-puttkamer/projekt-besprechen
- Event type id: 7567204

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7567204&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": 7567204,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "vorhaben": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `vorhaben` (Worum geht es bei Ihrem Vorhaben?), `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.