# Technical Second Opinion with Eduardo Martos

> A second independent opinion to make a technical decision with more information and less uncertainty. We will analyze a specific question about architecture, development, migrations, integrations or evolution of a platform, contrasting alternatives, risks and implications. I will previously review the context you provide me and, after the session, you will receive a brief summary with the recommendation and next steps. The service is designed for a main decision or problem; It is not a substitute for a full technical audit or thorough code review.

- Host: Eduardo Martos
- Duration: 60 min
- Location: Google Meet
- Host time zone: Europe/Madrid
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/emartos/technical-second-opinion
- Event type id: 6688870

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6688870&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": 6688870,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "problema": "…",
    "objetivo": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `problema` (What do you want me to analyze?), `objetivo` (What would you like to understand clearly at the end of the session?)
- Optional fields: `notes` (Links or relevant documentation), `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.