> For the complete documentation index, see [llms.txt](https://docs.hypertune.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hypertune.com/sdk-reference/hard-coded-fallbacks.md).

# Hard-coded fallbacks

Whenever you evaluate a flag, you pass a hard-coded fallback value, e.g.

```typescript
const exampleFlag = hypertune.exampleFlag({ fallback: false });
```

If [Hypertune Edge](/concepts/hypertune-edge.md) is unreachable and there's no [build-time fallback snapshot of your flag logic](/sdk-reference/build-time-snapshot.md), or there's an error evaluating the flag, you'll get this hard-coded fallback value instead.

This ensures that in the worst-case scenario, your app still works properly.