# Rupert – Cal.com booking page

> Tennis coaching for beginners who want to build a strong foundation from the start.

Lessons are simple, structured, and based on first-principles fundamentals, helping you understand the logical side of this counterintuitive game

Designed for anyone who wants technical clarity without unnecessary complexity to create the strongest foundations and raise your improvement ceiling.

Booking page: https://cal.com/ruperts-tennis-coaching

## Event types

- [1.5 Hour Fundamentals Building](https://cal.com/ruperts-tennis-coaching/1.5-hour-fundamentals-building): 90 min, confirmed instantly, event type id 5740305. Details: https://cal.com/ruperts-tennis-coaching/1.5-hour-fundamentals-building.md
- [2 Hour Fundamentals Building](https://cal.com/ruperts-tennis-coaching/2-hour-fundamentals-building): 120 min, confirmed instantly, event type id 5740302. Details: https://cal.com/ruperts-tennis-coaching/2-hour-fundamentals-building.md
- [1 Hour Fundamentals Building](https://cal.com/ruperts-tennis-coaching/30min): 60 min, confirmed instantly, event type id 5740099. Details: https://cal.com/ruperts-tennis-coaching/30min.md

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&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

Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.com/docs/api-reference/v2/introduction