# Free 30-min strategy call with Voddepally Sathish Kumar

> Book a free 30-minute strategy call to get clarity, direction, and next steps for your design system, tokens, UX, or product UI. We’ll discuss your current challenge, identify what’s blocking progress, and map the best path forward. You’ll leave with practical guidance you can apply immediately. No pressure, no sales pitch. Share your Figma link or product URL before the call so we can make the session productive.

- Host: Voddepally Sathish Kumar
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Calcutta
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/tokenpx/free-30-min-strategy-call
- Event type id: 4253557

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4253557&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": 4253557,
  "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.