# useRuntimeHook
> Registers a runtime hook in a Nuxt application and ensures it is properly disposed of when the scope is destroyed.
This composable is available in Nuxt v3.14+.
```ts [signature]
function useRuntimeHook (
name: THookName,
fn: RuntimeNuxtHooks[THookName] extends HookCallback ? RuntimeNuxtHooks[THookName] : never,
): void
```
## Usage
### Parameters
- `name`: The name of the runtime hook to register. You can see the full list of [runtime Nuxt hooks here](/docs/4.x/api/advanced/hooks#app-hooks-runtime).
- `fn`: The callback function to execute when the hook is triggered. The function signature varies based on the hook name.
### Returns
The composable doesn't return a value, but it automatically unregisters the hook when the component's scope is destroyed.
## Example
```vue [pages/index.vue]twoslash
```
---
- [Source](https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/runtime-hook.ts)