# Cathryn Peirce – Cal.com booking page

> Head of Partnerships at Collective

Booking page: https://collective.cal.com/cpeirce

## Event types

- [Collective Affiliate Program](https://collective.cal.com/cpeirce/collective-affiliate-program): 15 min, confirmed instantly, event type id 7613593. Onboarding for new Collective Affiliates Details: https://collective.cal.com/cpeirce/collective-affiliate-program.md
- [Partner Call: 15 Min](https://collective.cal.com/cpeirce/15min): 15 min, confirmed instantly, event type id 5972773. Details: https://collective.cal.com/cpeirce/15min.md
- [Partner Call: 20 Min](https://collective.cal.com/cpeirce/20min): 20 min, confirmed instantly, event type id 7482567. Details: https://collective.cal.com/cpeirce/20min.md
- [Partner Call: 30 Min](https://collective.cal.com/cpeirce/30min): 30 min, confirmed instantly, event type id 5972772. Details: https://collective.cal.com/cpeirce/30min.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