---
title: useNonce
description: The useNonce hook returns the content security policy nonce.
api_version: 2026-04
api_name: hydrogen
source_url:
html: https://shopify.dev/docs/api/hydrogen/2024-04/hooks/usenonce
md: https://shopify.dev/docs/api/hydrogen/2024-04/hooks/usenonce.md
---
# useNonce
The `useNonce` hook returns the [content security policy](https://shopify.dev/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.
## useNonce()
Examples
### Examples
* #### Example code
##### JavaScript
```jsx
import {
Links,
LiveReload,
Meta,
Outlet,
Scripts,
ScrollRestoration,
} from 'react-router';
import {useNonce} from '@shopify/hydrogen';
export default function App() {
const nonce = useNonce();
return (
);
}
```
##### TypeScript
```tsx
import {Links, Meta, Outlet, Scripts, ScrollRestoration} from 'react-router';
import {useNonce} from '@shopify/hydrogen';
export default function App() {
const nonce = useNonce();
return (
);
}
```
***
## Related
[- createContentSecurityPolicy](https://shopify.dev/docs/api/hydrogen/2026-04/utilities/createcontentsecuritypolicy)
[- Script](https://shopify.dev/docs/api/hydrogen/2026-04/components/script)
***