# Discovery Call with Mark Xavier Quadros

> Interested in videngineer, or making rad video for your startup. We can help! Weve made 100s of videos for SaaS, our personal brand and for resaerch. We run a bespoke video agency: growthog.com, and video analysis software, videngineer.com Send Me the following: 1. Brand website 2. Core ICP and the outcome from using your product/service. Exisrting video ad lineup + last campaign's results. I'll audit them through our story-driven lens and offer free consultancy and ways we can help with either videngineer, or bespoke.

- Host: Mark Xavier Quadros
- Duration: 30, 60 min
- Location: Cal Video
- Host time zone: Asia/Bangkok
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/zen-biz-dga9qf/video-discovery-sesssion
- Event type id: 5996390

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5996390&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": 5996390,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 30,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Company-Website": "…",
    "Link-to-the-Meta-ad--or-ad-you-cant-reviewed": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Company-Website` (Company Website), `Link-to-the-Meta-ad--or-ad-you-cant-reviewed` (Link to the Meta ad, or ad you cant reviewed)
- Optional fields: `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.
- `lengthInMinutes` picks one of 30, 60; pass the same value to the slots request as `duration`.