# useNonce
The `useNonce` hook returns the [content security policy](/docs/custom-storefronts/hydrogen/content-security-policy) nonce. Use the hook to manually add a nonce to third party scripts. The `Script` component automatically does this for you. Note, the nonce should never be available in the client, and should always return undefined in the browser.
### Example code

```jsx
import {
  Links,
  LiveReload,
  Meta,
  Outlet,
  Scripts,
  ScrollRestoration,
} from '@remix-run/react';
import {useNonce} from '@shopify/hydrogen';

export default function App() {
  const nonce = useNonce();

  return (
    &lt;html lang="en"&gt;
      &lt;head&gt;
        &lt;meta charSet="utf-8" /&gt;
        &lt;meta name="viewport" content="width=device-width,initial-scale=1" /&gt;
        &lt;Meta /&gt;
        &lt;Links /&gt;
      &lt;/head&gt;
      &lt;body&gt;
        &lt;Outlet /&gt;
        &lt;ScrollRestoration nonce={nonce} /&gt;
        &lt;Scripts nonce={nonce} /&gt;
        &lt;LiveReload nonce={nonce} /&gt;
      &lt;/body&gt;
    &lt;/html&gt;
  );
}

```

```tsx
import {
  Links,
  LiveReload,
  Meta,
  Outlet,
  Scripts,
  ScrollRestoration,
} from '@remix-run/react';
import {useNonce} from '@shopify/hydrogen';

export default function App() {
  const nonce = useNonce();

  return (
    &lt;html lang="en"&gt;
      &lt;head&gt;
        &lt;meta charSet="utf-8" /&gt;
        &lt;meta name="viewport" content="width=device-width,initial-scale=1" /&gt;
        &lt;Meta /&gt;
        &lt;Links /&gt;
      &lt;/head&gt;
      &lt;body&gt;
        &lt;Outlet /&gt;
        &lt;ScrollRestoration nonce={nonce} /&gt;
        &lt;Scripts nonce={nonce} /&gt;
        &lt;LiveReload nonce={nonce} /&gt;
      &lt;/body&gt;
    &lt;/html&gt;
  );
}

```


## Props

### UseNonceGeneratedType

#### Returns: 

useNonce = () => useContext(NonceContext)
## Related
- [createContentSecurityPolicy](/docs/api/hydrogen/2023-07/utilities/createcontentsecuritypolicy)
- [Script](/docs/api/hydrogen/2023-07/components/script)