# Isaiah Hall – Cal.com booking page

> Book a meeting with Isaiah Hall on Cal.com.

Booking page: https://use-circle.cal.com/isaiah

## Event types

- [30 Minute Demo Call](https://use-circle.cal.com/isaiah/30min-demo): 30 min, confirmed instantly, event type id 5185356. Details: https://use-circle.cal.com/isaiah/30min-demo.md
- [15 Minute Demo Call](https://use-circle.cal.com/isaiah/15min-demo): 15 min, confirmed instantly, event type id 5185352. Details: https://use-circle.cal.com/isaiah/15min-demo.md
- [Meeting with Isaiah](https://use-circle.cal.com/isaiah/30min): 30 min, confirmed instantly, event type id 2944405. Details: https://use-circle.cal.com/isaiah/30min.md
- [10 Minute Demo Call](https://use-circle.cal.com/isaiah/10min-demo): 10 min, confirmed instantly, event type id 5185345. Details: https://use-circle.cal.com/isaiah/10min-demo.md
- [1:1 Demo with Circle Team](https://use-circle.cal.com/isaiah/1-1-demo-with-circle-team): 30 min, confirmed instantly, event type id 5242066. Details: https://use-circle.cal.com/isaiah/1-1-demo-with-circle-team.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