# @add-ideas/toolbox-shell-react
```tsx
import { AppShell } from "@add-ideas/toolbox-shell-react";
import "@add-ideas/toolbox-shell-react/styles.css";
Help}>
;
```
`AppShell` discovers `?toolbox=...` or ``, but continues in
standalone mode if context is absent, unavailable, cross-origin, or invalid. Its
app switcher is exposed as the accessible navigation landmark
`Toolbox applications` and all destinations use ordinary document navigation.