# Intro Call with Charles Postiaux

> Here's what we will be doing for ~25 mins - Quick intro - Work & Process - Your project & goals - Next steps if there's a fit

- Host: Charles Postiaux
- Duration: 25 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/baobunstudio/intro
- Event type id: 435112

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=435112&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": 435112,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "Business": "…",
    "Budget": "…",
    "Start": "…",
    "Goals": "…",
    "How-did-you-hear-about-us": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Business` (Business name), `Budget` (What's your budget for this project?), `Start` (How soon do you want to get started?), `Goals` (Share your goals for this call and project), `How-did-you-hear-about-us` (How did you hear about us?)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.