# Intro Call with Ninsei Labs

> A quick, no-pressure first conversation. Tell me what you're trying to fix or build, and I'll tell you straight whether AI is the right tool, where the fastest win is, and how I'd approach it. You leave with a clear next step, whether or not we end up working together.

- Host: Ninsei Labs
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ninseilabs/intro-call
- Event type id: 6116375

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6116375&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": 6116375,
  "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.