# Fit Call with Thevaultproject

> 20 minutes. Bring the problem, not a finished brief. We will clarify what is stuck, whether THE_VAULT is the right fit, and what the next move should be. This is a fit call, not a full discovery session. Selected projects move into a focused discovery session before scope, price or timing is locked. If we are not the right fit, we will say so plainly.

- Host: Thevaultproject
- Duration: 20 min
- Location: Google Meet
- Host time zone: America/Vancouver
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/thevaultproject/discoverycall
- Event type id: 6452975

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6452975&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": 6452975,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-needs-to-change": "…",
    "Which-area-feels-closest": "…",
    "What-budget-range-are-you-considering": "…",
    "attendeePhoneNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-needs-to-change` (What needs to change?), `Which-area-feels-closest` (Which area feels closest?), `What-budget-range-are-you-considering` (What budget range are you considering?)
- Optional fields: `attendeePhoneNumber` (Phone number), `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.