# Reunión de 30 min with The GP Files

- Host: The GP Files
- Duration: 30 min
- Location: Cal Video, Google Meet
- Host time zone: Europe/Madrid
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/cristian-cabrera-ajabcw/30min
- Event type id: 4422149

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4422149&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": 4422149,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Web": "…",
    "Facturaci-n": "…",
    "legal_consent": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Web` (Web de la empresa), `Facturaci-n` (Facturación), `legal_consent` (He leído y acepto la Política de Privacidad ([https://thegpfiles.com/politica-privacidad.html](https://thegpfiles.com/politica-privacidad.html)) y consiento el tratamiento de mis datos.)
- Optional fields: `guests` (Add guests), `notes` (¿Cual es el cuello de botella que te impide escalar?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is optional; without it the booking uses the event’s first location.