# 프로젝트 상담 30분 · Project call with Decisionary

> 만들고 싶은 소프트웨어와 현재 상황을 30분 동안 듣고, 진행 방식과 다음 단계를 안내합니다. A 30-minute call about the software you want to build and where things stand today. We'll suggest how to proceed and what comes next. 作りたいソフトウェアと現状を30分でお伺いし、進め方と次のステップをご案内します。

- Host: Decisionary
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Seoul
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/decisionary/project-call
- Event type id: 7768062

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7768062&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": 7768062,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "company": "…",
    "project": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `company` (회사 / Company / 会社名), `project` (만들고 싶은 것 / What you want to build / 作りたいもの)
- 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.