# Crux — clinical workflow discovery with Bradley Phelps

> A free 30-minute conversation about one workflow you want to improve: patient enquiries, onboarding, readings between appointments, or the admin behind them. We will look at how it works today, where your team gets held up, and whether your existing tools can solve it or a focused build makes sense. You will leave with a practical next step, not a commitment to a project. No preparation needed. Please do not include patient-identifiable information in the booking or call.

- Host: Bradley Phelps
- Duration: 30 min
- Location: Cal Video
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/bradley-phelps-datauc/30min
- Event type id: 7283715

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7283715&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": 7283715,
  "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.