# Andreas Möller – Cal.com booking page

> I own a computer. • Software Engineer and Consultant • From legacy to modern PHP • https://localheinz.com/services/

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

## Event types

- [Introduction](https://cal.com/localheinz/introduction): 15 min, confirmed instantly, event type id 233805. Details: https://cal.com/localheinz/introduction.md
- [Diagnosis](https://cal.com/localheinz/diagnosis): 15, 30 min, confirmed instantly, event type id 284463. Details: https://cal.com/localheinz/diagnosis.md
- [Modernizing legacy PHP teams](https://cal.com/localheinz/modernizing-legacy-php-teams): 15, 30 min, confirmed instantly, event type id 284469. Details: https://cal.com/localheinz/modernizing-legacy-php-teams.md
- [Maintaining legacy PHP applications](https://cal.com/localheinz/maintaining-legacy-php-applications): 15, 30 min, confirmed instantly, event type id 284470. Details: https://cal.com/localheinz/maintaining-legacy-php-applications.md
- [Modernizing legacy PHP applications](https://cal.com/localheinz/modernizing-legacy-php-applications): 15, 30 min, confirmed instantly, event type id 284468. Details: https://cal.com/localheinz/modernizing-legacy-php-applications.md
- [Updating from unsupported to supported PHP versions](https://cal.com/localheinz/updating-from-unsupported-to-supported-php-versions): 15, 30 min, confirmed instantly, event type id 284467. Details: https://cal.com/localheinz/updating-from-unsupported-to-supported-php-versions.md

## 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