# Founder Content Engine Strategy Call with Rajat Nangaliya

> This strategy call is for founders serious about building a long-term personal brand through structured, high-quality content systems. If approved, we’ll explore working together on a monthly retainer.

- Host: Rajat Nangaliya
- Duration: 30 min
- Location: Cal Video
- Host time zone: Asia/Kolkata
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/rajat-nangaliya-vqpjmi/30min
- Event type id: 4889163

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4889163&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": 4889163,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "title": "…",
    "Startup-founders": "…",
    "current_stage": "…",
    "revenue": "…",
    "why": "…",
    "bottleneck": "…",
    "outcome": "…",
    "contentsupport": "…",
    "attendeePhoneNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (Your Instagram Username *), `Startup-founders` (What best describes you?), `current_stage` (What stage is your personal brand currently in?), `revenue` (What is your current monthly revenue?), `why` (Why do you want to build your personal brand right now?), `bottleneck` (What’s your biggest content bottleneck right now?), `outcome` (What outcome are you aiming for in the next 6 months?), `contentsupport` (Are you looking for ongoing content support?)
- Optional fields: `attendeePhoneNumber` (Phone number)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.