> For the complete documentation index, see [llms.txt](https://bybt.gitbook.io/bybt/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bybt.gitbook.io/bybt/options/options-open-interest-chart.md).

# Options Open Interest Chart

## GetOptions Open Interest Chart

<mark style="color:blue;">`GET`</mark> `https://open-api.bybt.com/api/pro/v1/option/openInterest/history/chart`

#### Query Parameters

| Name     | Type   | Description                                     |
| -------- | ------ | ----------------------------------------------- |
| interval | string | <p>ALL:0<br>1H: 2<br>4H: 1<br>12H: 4<br>245</p> |
| symbol   | string | BTC , ETH                                       |

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