# AI Discovery Call (30 min) with Mathieu Romary

> Cliquez ici pour un appel découverte en français 30 minutes to see where you are with AI and leave with concrete next steps.

- Host: Mathieu Romary
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/mathieu-romary/30min-ai-discovery-en
- Event type id: 7322173

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7322173&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": 7322173,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "top_of_mind": "…",
    "persona": "…"
  }
}
```

- Required fields: `name` (What should I call you?), `email` (Email), `attendeePhoneNumber` (Phone), `top_of_mind` (What's top of mind?), `persona` (Which describes you?)
- 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.