# @add-ideas/toolbox-shell-react
```tsx
import { AppShell } from "@add-ideas/toolbox-shell-react";
import "@add-ideas/toolbox-shell-react/styles.css";
setHelpOpen(true) }}>
;
```
`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.
The fixed top row exposes Personalize, Apps, Gitea source, and Help in that
order, a centered title/subtitle, and a Toolbox home/brand block. Personalize
offers light/dark/system mode by default. Version, privacy, and application
actions render in the standard footer so connected and standalone headers keep
the same geometry.
`ToolboxHeader` is exported separately for custom shells. Its
`personalizeContent` prop puts custom preferences inside the shared controlled
popover, while `brandIconUrl` supplies a portal favicon; an inline Toolbox cube
is the fallback. Personalize and Apps popovers are mutually exclusive and close
on Escape, outside interaction, or link selection.