# Free 15-Min Intro with East Allen

> A free 15-minute intro call, one per person. East Allen, fractional CTO at CTO East. Websites that work on phones, business tech set up right, and the repeat busywork automated. Tell me what is going on and I will tell you the right next step. Already had your free intro? Book a 30-minute strategy session ($111) at cal.com/ctoeast/session-30 or a 60-minute working session ($222) at cal.com/ctoeast/session-60 instead.

- Host: East Allen
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ctoeast/intro
- Event type id: 7454457

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7454457&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": 7454457,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "need": "…",
    "prior-intro": "…",
    "business": "…",
    "details": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `need` (What do you need help with?), `prior-intro` (Have you booked a free intro with CTO East before?)
- Optional fields: `business` (Business name), `details` (Tell me briefly what is going on), `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.