# AI Automation Discovery Chat with Fabian Markl

> How it works: 5 minutes before your booked time I'll email you a private chat link. Click it and we chat for 30 minutes. After that chat we schedule a call if it makes sense.

- Host: Fabian Markl
- Duration: 30 min
- Location: Private chat room.
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/fabimarkl/free-chat
- Event type id: 3817357

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3817357&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": 3817357,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "business": "…",
    "task": "…",
    "tools": "…",
    "revenue": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `business` (What type of business do you run?), `task` (Write 2-3 sentences on what task/process in your business you want to automate? (Please add as much detail as you can)), `tools` (Are you currently using any automation tools? (if "yes" which ones)), `revenue` (What's your current monthly revenue?)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.