# KEYS

> **Implementation: experimental · Proposal: [in-review](https://github.com/napplet/naps/pull/9)** (status checked 2026-10-31). Keyboard binding ships, but dedicated domain regression coverage is limited; retain explicit evaluation opt-in. All capabilities remain subject to change. [Maturity and opt-in policy](https://napplet.run/docs/naps/maturity.md).

Keyboard bindings and action registration — the shell binds keys to named actions.

```ts
await window.napplet.keys.registerAction({ id: 'editor.save', label: 'Save', defaultKey: 'Ctrl+S' });
const sub = window.napplet.keys.onAction('editor.save', () => save());
```

This non-normative guide defers to the living [NAP-KEYS proposal](https://github.com/napplet/naps/pull/9). Feature-gate with `if (window.napplet?.keys)` before use; the runtime injects only available domains. Typed helpers ship from [`@napplet/nap/keys`](https://napplet.run/docs/packages/nap.md) and [`@napplet/sdk`](https://napplet.run/docs/packages/sdk.md).