# We need to discuss! with Prottay Kumar Adhikary

> This is a longer, in-depth session meant for detailed discussions and collaborative thinking. It is ideal for project exploration, client consultations, requirement gathering, demos, or reviewing research proposals. During this call, we will dive deeper into the specifics of your project or idea, explore potential challenges and opportunities, and brainstorm actionable next steps for implementation. The session also works well as a focused 1:1 collaborative discussion, ensuring there is enough time to exchange insights, clarify expectations, and align on a clear path forward.

- Host: Prottay Kumar Adhikary
- Duration: 45, 60, 90 min
- Location: Google Meet
- Host time zone: Asia/Kolkata
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/proadhikary/long-call
- Event type id: 3109598

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3109598&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

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 3109598,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 45,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `lengthInMinutes` picks one of 45, 60, 90; pass the same value to the slots request as `duration`.