# keep chen (stardots-io) – Cal.com booking page

> stardots.io 创始人，go-sail.dev框架作者。

我的独立产品：
https://stardots.io
https://random100.com

我的开源项目：
https://github.com/keepchen/go-sail

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

## Event types

- [15 分钟会议](https://cal.com/keepchen/15min): 15 min, confirmed instantly, event type id 1951488. Details: https://cal.com/keepchen/15min.md
- [30 分钟会议](https://cal.com/keepchen/30min): 30 min, confirmed instantly, event type id 1951487. Details: https://cal.com/keepchen/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