# INTERRUPT_BOUNDARY_PHASES

# Variable: INTERRUPT\_BOUNDARY\_PHASES

```ts
const INTERRUPT_BOUNDARY_PHASES: readonly ["beforeModel", "afterModel", "beforeTools", "afterTools"];
```

Defined in: [packages/ai/src/activities/chat/middleware/types.ts:95](https://github.com/TanStack/ai/blob/main/packages/ai/src/activities/chat/middleware/types.ts#L95)