# 30-Minute Discovery Call w/ Phil with Phil | Bakbone Studio

> Hey! I'm genuinely looking forward to learning more about your business and how can I help. Please fill out the questions below so I can best prepare for our call and make the most of our time together!

- Host: Phil | Bakbone Studio
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Warsaw
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/bakbone/intro
- Event type id: 3692724

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3692724&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": 3692724,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "BusinessName": "…",
    "CompanyWebsite": "…",
    "how_many_active_users": "…",
    "What_goals_are_you_trying_to_achieve": "…",
    "Your_current_arr": "…",
    "Budget": "…",
    "How_did_you_hear_about_us": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `BusinessName` (Business Name), `CompanyWebsite` (Company Website), `how_many_active_users` (How Many Monthly Active Users Do You Have?), `What_goals_are_you_trying_to_achieve` (What Are You Trying To Achieve (By Working With Us)?), `Your_current_arr` (What Growth Stage Are You At Right Now?), `Budget` (What's your MAX budget for this project?), `How_did_you_hear_about_us` (How did you hear about us?)
- Optional fields: `notes` (Additional notes)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.