# Platform Assessment intro call with Ben Rubert

> I'm Ben Rubert, founder of Kaan Systems. I help SaaS, health-tech and fintech teams get their platforms into Terraform, with Kubernetes and CI/CD pipelines built to last and audit evidence that comes as a byproduct, not a fire drill. On this call we'll look at where your platform stands, what's slowing your team down, and whether a Terraform & Platform Assessment or a retainer is the right next step. You'll leave with clear next steps either way.

- Host: Ben Rubert
- Duration: 30 min
- Location: Cal Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/benrubert/30min
- Event type id: 7517644

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7517644&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": 7517644,
  "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.