# Founder Clarity Call 30 Min with Joistic Tech

> Building a tech product but unsure about the right direction, stack, or MVP scope? Book a 30-minute Founder Clarity Call with Joistic to get structured guidance on turning your idea into a launch-ready MVP. In this focused session, we will: •⁠ ⁠Refine your MVP scope •⁠ ⁠Define the right AI-first tech stack •⁠ ⁠Identify build vs automate decisions •⁠ ⁠Outline a 30–60 day execution roadmap •⁠ ⁠Highlight technical risks before you build This is not a generic tech Q&A. This is a strategic product discussion led by Joistic’s founders, bringing 10+ years of experience building and shipping startup products. Think of it as an interim CTO conversation — without equity dilution.

- Host: Joistic Tech
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Calcutta
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/joistic/30min
- Event type id: 730456

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=730456&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": 730456,
  "start": "<UTC ISO 8601 start from the slots response>",
  "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.