# 30 Min Meeting with Mark Colgan

> Hey hey, this link is used for my clients during onboarding calls, workshops and check ins. It's also used for catching up with friends and partners. There are no form fields to complete, but any action items should be included in my emails to you. Chat soon, Mark

- Host: Mark Colgan
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Lisbon
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/markpcolgan/30
- Event type id: 993703

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=993703&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": 993703,
  "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.