# Trezor.io/start – Cal.com booking page

> Trezor.io/start is the official setup page for your Trezor hardware wallet. Learn how to initialize, secure, and manage your crypto safely. Follow simple steps, update firmware, and protect digital assets with industry-leading security and begin trusted self-custody today with confidence.

Booking page: https://cal.com/trezoiosstart

## Event types

No public event types.

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&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

Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.com/docs/api-reference/v2/introduction