# Mortgage First Steps with Robert Hall

> A call with Rob to help you choose the right mortgage to match your criteria & circumstances.

- Host: Robert Hall
- Duration: 60 min
- Location: Attendee phone number
- Host time zone: Europe/London
- Confirmation: The host confirms each booking; it stays pending until they accept it.
- Booking page: https://cal.com/robert-hall/mortgage
- Event type id: 318682

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=318682&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": 318682,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeePhone",
    "phone": "…"
  },
  "bookingFieldsResponses": {
    "Type-of-mortgage": "…",
    "Property-Purpose": "…",
    "Stage": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Type-of-mortgage` (What are you looking to do), `Property-Purpose` (What's the purpose of the property), `Stage` (What stage are you at?)
- Optional fields: `notes` (Any additional details?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is required: `location.phone` is the attendee’s own.
- A successful response is a pending booking request.