# Website call with Nathan Simula

> A 30-minute call to talk about your website and your goals. If a partner or decision-maker should join, add them directly to the invitation.

- Host: Nathan Simula
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/nathan-simula/website-call
- Event type id: 7723526

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7723526&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": 7723526,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "besoins": "…",
    "budget": "…",
    "attendeePhoneNumber": "…",
    "precisions": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `besoins` (What can we help you with?), `budget` (What is your budget?)
- Optional fields: `attendeePhoneNumber` (Your phone number), `precisions` (Anything else we should know?), `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.