# Introductory call with Ole Hüter

> Let's meet if you ... - think about building a new fully-featured web application or just an MVP, - need support adding, fixing, or improving features in existing app, - want to update and modernize the tech stack of your app, - accelerate the speed of your dev team by implementing or improving agile methodology & processes, CI/CD, state-of-the-art tools and technology. Visit my website to read more.

- Host: Ole Hüter
- Duration: 30 min
- Location: MS Teams
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ohueter/intro
- Event type id: 306693

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=306693&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": 306693,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "title": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (What is this meeting about?)
- 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.