# Market Review with Outbound Scale with Brandon Turnbull

> A 30-minute working session on your market: how much of it you're reaching today, where the gaps are, and what we'd test first. You'll talk with the operator who would run your account. No slides, no pitch deck. To make the most of the time, have a rough sense of who your best customers are and what you've tried in outbound so far.

- Host: Brandon Turnbull
- Duration: 30 min
- Location: Zoom Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/outboundscale/market-review
- Event type id: 382654

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=382654&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": 382654,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Company-Name": "…",
    "Website": "…",
    "monthly-gtm-budget": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Company-Name` (Company Name), `Website` (Website), `monthly-gtm-budget` (What monthly budget have you set aside for GTM?), `notes` (What's stopping your pipeline from growing today?)
- 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.