> ## Documentation Index
> Fetch the complete documentation index at: https://docs.revoengine.com/llms.txt
> Use this file to discover all available pages before exploring further.

# api.existsInstanceCache()

> Public low-code contract, signatures and examples for api.existsInstanceCache.

## `api.existsInstanceCache()`

Checks whether an instance cache key exists.

### Signature

```ts theme={null}
static existsInstanceCache(key: string): Promise<boolean>;
```

### Example

```ts theme={null}
const exists = await api.existsInstanceCache('sync:state');
```

See [all api methods](https://docs.revoengine.com/low-code/reference/api.md) or [runtime basics](https://docs.revoengine.com/low-code/overview.md).


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