# Karthick Sundararajan – Cal.com booking page

> I help businesses reduce IT costs through efficient platform migrations, technical debt reduction, and pragmatic architecture oversight. Available for freelance consulting or interim roles. Based in Luxembourg, available remotely.

Booking page: https://cal.com/karthick-s

## Event types

- [30 Min Meeting](https://cal.com/karthick-s/30min): 30 min, requires the host’s confirmation, event type id 2318881. Details: https://cal.com/karthick-s/30min.md
- [15 Min Meeting](https://cal.com/karthick-s/15min): 15 min, requires the host’s confirmation, event type id 2318879. Details: https://cal.com/karthick-s/15min.md
- [Discuss Project Details](https://cal.com/karthick-s/discuss-details): 60 min, confirmed instantly, event type id 2318912. Details: https://cal.com/karthick-s/discuss-details.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