# Strategy Day with Mattermore Founder, Joey Burrow with Joey | Mattermore

> A full day of founder + practice lead, Joey, working directly with you and your team, and a written report you can act on, with or without us. Use this form to book the day you'd like Joey to work with you. This price includes a fact-finding programme completed before the strategy day so the whole day is focused on clear strategic and commercial action. If we agree a follow-up project within 60 days, the strategy day costs you nothing. The full price is deducted from your first invoice. Joey has spent a decade making brand and growth decisions for global enterprises and resource-constrained challengers, from Fiserv and IBM to Spark and GGV-backed start-ups.

- Host: Joey | Mattermore
- Duration: 450 min
- Location: We prefer in person, travel expenses not included.
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/joey-mattermore/yourstrategydaywithmattermore
- Event type id: 7474821

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7474821&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": 7474821,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeeDefined",
    "location": "…"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Brand": "…",
    "Fact-finding-setup": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Brand` (Brand), `Fact-finding-setup` (Fact-finding setup)
- 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.
- `location` is required: `location.location` is the attendee’s own.