# Rendez-vous de 15 min with Plenly

> Je m’appelle Marius, fondateur de Plenly. J’ai créé Alex, un assistant commercial sur WhatsApp, parce que mon père est agent multicarte et le voir crouler sous l’admin m’a donné envie de lui simplifier la vie. On en parle ?

- Host: Plenly
- Duration: 15 min
- Location: Cal Video
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/plenly.io/15min
- Event type id: 7424108

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7424108&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": 7424108,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `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.