# 20 min meeting with Himanshu Sharma

> Please follow the instructions to schedule time with me - it's fast and easy. Follow me on Linkedin

- Host: Himanshu Sharma
- Duration: 20 min
- Location: Cal Video
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/optimizesmart/20min
- Event type id: 4591310

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4591310&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": 4591310,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-best-describe-your-type-of-business": "…",
    "What-is-your-Website-Address": "…",
    "Your-Annual-Online-Revenue-is": "…",
    "expectations": "…",
    "How-did-you-hear-about-us": "…",
    "Your-Country": "…"
  }
}
```

- Required fields: `What-best-describe-your-type-of-business` (What best describe your type of business?), `What-is-your-Website-Address` (What is your Website Address?), `Your-Annual-Online-Revenue-is` (Your Annual Online Revenue is), `expectations` (What are your expectations from this consultation? What do you think should happen as a result of our consultation? What level and type of improvement you expect to see via our consultation?), `name` (Your name), `email` (Email address), `How-did-you-hear-about-us` (How did you hear about us?), `Your-Country` (Your Country)
- Optional fields: `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.