# Tejan Sree Challa – Cal.com booking page

> I run MANU — Machine-Augmented Neural Understanding — a personal research and engineering studio based in Ireland, building applied ML across neuroimaging, medical diagnostics, and drug discovery, in collaboration with RealActivity, LLC on joint healthcare AI work. Open to collaborations, research discussions, and interesting problems.

Booking page: https://cal.com/TejanCh

## Event types

- [30 min meeting](https://cal.com/TejanCh/30min): 30 min, confirmed instantly, event type id 7162445. Details: https://cal.com/TejanCh/30min.md
- [15 min meeting](https://cal.com/TejanCh/15min): 15 min, confirmed instantly, event type id 7162444. Details: https://cal.com/TejanCh/15min.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