> ISPO SDK documentation. [HTML](https://ispo.ai/docs/interfaces/core.SystemAudioStartInput.html) · [Documentation index](https://ispo.ai/docs/llms.txt)

# Interface SystemAudioStartInput

```typescript
interface SystemAudioStartInput {
    idempotencyKey: string;
    timeoutMs?: number;
}
```

Types: [idempotencyKey](#idempotencykey), [timeoutMs](#timeoutms)

##### Index

### <a id="properties"></a>Properties

[idempotencyKey](#idempotencykey) [timeoutMs?](#timeoutms)

## <a id="properties-1"></a>Properties

### <a id="idempotencykey"></a>`Readonly`idempotencyKey

```typescript
idempotencyKey: string
```

Caller-stable key. Retrying the same start never creates a second capture.

### <a id="timeoutms"></a>`Optional` `Readonly`timeoutMs

```typescript
timeoutMs?: number
```

User-confirmation and native capture budget. Defaults to 60 seconds.