# Md Rejoanul Hasan Rakib – Cal.com booking page

> Hi, I am a professional website developer and business growth expert.

I help businesses to gain 2x growth with Online Presence and make things easy with website | Freelance Web Developer MERN | Next.js | Express.js

Booking page: https://cal.com/md-rejoanul-hasan-rakib

## Event types

- [Book A Call](https://cal.com/md-rejoanul-hasan-rakib/book-a-meeting): 15, 30, 45 min, confirmed instantly, event type id 4265871. Please provide some additional information or notes before booking a meeting with us. This will help us understand what the call will be about Details: https://cal.com/md-rejoanul-hasan-rakib/book-a-meeting.md
- [30 Min Meeting](https://cal.com/md-rejoanul-hasan-rakib/30min): 30 min, confirmed instantly, event type id 4261153. Please before while Book a meeting with me write an Additional notes it would be easy for make to take the event. Details: https://cal.com/md-rejoanul-hasan-rakib/30min.md
- [15 Min Meeting](https://cal.com/md-rejoanul-hasan-rakib/15min): 15 min, confirmed instantly, event type id 4261154. Please before while Book a meeting with me write an Additional notes it would be easy for make to take the event. Details: https://cal.com/md-rejoanul-hasan-rakib/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