# Introduction to Grace with Simon Hatfield

> Join me for a personal introduction to Grace. We'll explore how Grace helps hospitality businesses better understand their guests, increase revenue and reduce operational complexity by bringing key systems together in one platform. This session is ideal for venue owners, operators and hospitality professionals who are evaluating new technology or would like an early look at the future of Grace. You'll have plenty of opportunity to ask questions and discuss your own business challenges.

- Host: Simon Hatfield
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.eu/simonhatfield/introduction-to-grace
- Event type id: 320858

## Check availability

```http
GET https://api.cal.eu/v2/slots?eventTypeId=320858&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.eu/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 320858,
  "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.