# AI Staff Assessment with David He

> A 60-minute video call about how your business runs. You get my written assessment the same day: whether an AI hire would pay for itself, the job I would hand off first, what to settle before anything is built, and the fixed price for that first hire. Paid when you book. Not taken off the build. Cancel or reschedule at least 24 hours before the call for a full refund; once the call has happened and you have the assessment, it is not refundable. Book the free 15-minute fit call first if we have not spoken.

- Host: David He
- Duration: 60 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/davidxhe/discovery
- Event type id: 6978431

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6978431&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": 6978431,
  "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.