# Architecture Session with Ibrahim Zarifeh, Sour Mango

> A focused hour with the principal engineer. Bring a design, a bug, a cloud bill or a decision. You'll receive a written summary and next steps. Free rescheduling up to 24 hours before; cancellations made 24+ hours ahead are refunded.

- Host: Ibrahim Zarifeh, Sour Mango
- Duration: 60 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/sourmango/architecture-session
- Event type id: 7463400

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7463400&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": 7463400,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "Company": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Company` (Company), `notes` (What do you want to solve?)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.