# 20-min-es with Luis Romero

> Cuéntanos qué se comió tu semana. Te decimos qué se puede resolver. Sin presentación, sin contrato que leer.

- Host: Luis Romero
- Duration: 20 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/immerion/20-min-es
- Event type id: 6780149

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6780149&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": 6780149,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "-C-mo-se-llama-tu-negocio": "…",
    "Tu-sitio-web-actual--escribe--ninguno--si-no-tienes": "…",
    "-Qu--se-est--comiendo-tu-semana": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `-C-mo-se-llama-tu-negocio` (¿Cómo se llama tu negocio?), `Tu-sitio-web-actual--escribe--ninguno--si-no-tienes` (Tu sitio web actual (escribe "ninguno" si no tienes)), `-Qu--se-est--comiendo-tu-semana` (¿Qué se está comiendo tu semana?)
- 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.