# Quick Fit Call - 25 min with Foued Douiri

> For early-stage ideas or quick validation. What we’ll cover: Understand what you’re trying to build or improve Quick look at how you’re currently handling it Identify where things are slowing down or breaking Share an initial direction on how this could be approached Align on whether it’s worth going deeper and next steps What you’ll get: A clear view on whether a custom build makes sense Straightforward feedback (no generic advice) Direction you can act on immediately

- Host: Foued Douiri
- Duration: 25 min
- Location: Cal Video
- Host time zone: Africa/Lagos
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.eu/foued.douiri/25min
- Event type id: 277160

## Check availability

```http
GET https://api.cal.eu/v2/slots?eventTypeId=277160&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.eu/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 277160,
  "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.