# Free discovery call with Tiago Mariano-Aires

> A free 30-minute discovery call. No pitch deck, just a live diagnostic of where your business is stuck: how leads and customers move through it and what's still done by hand. You'll leave with two or three things worth fixing, whether or not we work together.

- Host: Tiago Mariano-Aires
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/Toronto
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tiago-mariano-aires-wmrf9k/30min
- Event type id: 7784992

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7784992&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": 7784992,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Business-name-and-website": "…",
    "What-does-your-business-do": "…",
    "Where-do-most-of-your-new-customers-come-from": "…",
    "team-size": "…",
    "current-tools": "…",
    "by-hand": "…",
    "package": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Business-name-and-website` (Business name and website)
- Optional fields: `guests` (Add guests), `What-does-your-business-do` (What does your business do?), `Where-do-most-of-your-new-customers-come-from` (Where do most of your new customers come from?), `team-size` (How many people work in the business?), `current-tools` (What do you run the business on today?), `by-hand` (What's still done by hand that's holding you back?), `package` (Which package are you interested in?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.