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

# isCallException

```ts theme={null}
function isCallException(error): error is CallExceptionError
```

Returns true if `error` is a [**CallExceptionError**](/sdk/content/interfaces/CallExceptionError).

## Parameters

| Parameter | Type  |
| :-------- | :---- |
| `error`   | `any` |

## Returns

`error is CallExceptionError`

## Source

[utils/errors.ts:673](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/utils/errors.ts#L673)