# Growth Hacking with Dhanish Athif

> Focused on rapid iteration and high-velocity testing. We’ll design A/B tests, viral loops, and leverage Lean Startup principles to drive rapid customer acquisition. Perfect for teams looking to validate new ideas and optimize every stage of the user funnel. Do share any helpful information prior to the call so as to make the most of it.

- Host: Dhanish Athif
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Kuala_Lumpur
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/catchdhanish/growth-hacking
- Event type id: 4862186

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4862186&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": 4862186,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `attendeePhoneNumber` (Phone number), `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.