# OpenTag Demo with Tony Kam

- Host: Tony Kam
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tonykam/opentag-demo
- Event type id: 6834164

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6834164&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": 6834164,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-company-are-you-with": "…",
    "Your-role": "…",
    "Team-size": "…",
    "What-are-you-hoping-to-accomplish-with-OpenTag": "…",
    "When-are-you-looking-to-evaluate-a-solution": "…",
    "notes": "…"
  }
}
```

- Required fields: `email` (Work email), `name` (Your name), `What-company-are-you-with` (What company are you with?), `Your-role` (Your role), `Team-size` (Team size), `What-are-you-hoping-to-accomplish-with-OpenTag` (What are you hoping to accomplish with OpenTag?), `When-are-you-looking-to-evaluate-a-solution` (When are you looking to evaluate a solution?)
- Optional fields: `guests` (Add guests), `notes` (Anything else?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.