# 45 Mins with Anhang Zhu (AZ)

- Host: Anhang Zhu (AZ)
- Duration: 45 min
- Location: Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tierzero-az/45min
- Event type id: 2640810

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2640810&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": 2640810,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeeCompanyName": "…",
    "engineeringTeamSize": "…",
    "businessChallenges": "…",
    "whynow": "…",
    "integrations_needed": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeeCompanyName` (Company), `engineeringTeamSize` (How big is your overall engineering team?), `businessChallenges` (What challenges are you facing today? Check all that apply.), `whynow` (What is causing you to book this meeting today? (Why now?))
- Optional fields: `integrations_needed` (What integrations do you need? This will help us tailor the demo.), `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.