# Free Lighting Estimate with Thomas Matlock

> Pick a time and I'll come walk your property: we'll measure the runs, look at your trees and porch lines, and I'll point out where everything anchors. About 15 minutes, and you'll have your number same day. No pressure, no obligation.

- Host: Thomas Matlock
- Duration: 15 min
- Location: Cal Video, In Person (Attendee Address)
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/thomasmatlock/lighting-estimate
- Event type id: 6889309

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6889309&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": 6889309,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `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 optional; without it the booking uses the event’s first location.