# Free 30min call with Théo Helias

> What we can do : - Discuss about your project - Answer all your questions - Understand how we can work together If you want another availability, contact me at theohelias91@gmail.com

- Host: Théo Helias
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/theohelias/30min-en
- Event type id: 3508357

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3508357&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": 3508357,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Type-de-projet": "…",
    "Etat-du-projet": "…",
    "Budget1": "…",
    "Lien": "…",
    "notes": "…",
    "Whatsapp": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (E-mail adresse), `Type-de-projet` (What type of project do you want to do?), `Etat-du-projet` (What is the current status of your project?), `Budget1` (What is your approximate budget for this project?)
- Optional fields: `Lien` (Your website URL), `notes` (Any specific details or needs you would like to share?), `Whatsapp` (Please share your WhatsApp to simplify our communication.), `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.