# usePresenceData > Read AnimatePresence custom data from an exiting child. **Source:** [https://motion.svelte.page/docs/use-presence-data](https://motion.svelte.page/docs/use-presence-data) --- `usePresenceData()` returns the nearest `` value. It matches Motion's hook shape: inside a presence boundary it returns that boundary's `custom` data, and outside a boundary it returns `undefined`. The main use case is keyed exit animation. Once a child has been removed from state, its normal props are stale. Presence data gives that exiting child the latest parent-level data, such as a carousel direction. ```svelte {#key selected} {/key} ``` Inside the keyed child: ```svelte ``` > Live example: [/examples/use-presence-data](https://motion.svelte.page/examples/use-presence-data) ## API Reference ### `usePresenceData(): T | undefined` Returns the current `custom` value from the nearest `` boundary. - Inside ``, returns `value`. - Outside ``, returns `undefined`. - In Svelte reactive contexts, wrap it in `$derived(...)` so updates to `custom` are tracked. ## Related - [AnimatePresence custom](/docs/animate-presence-custom) — dynamic exit variants using parent custom data. - [usePresence](/docs/use-presence) — manually delay removal with `safeToRemove`. Based on [Motion's usePresenceData API](https://motion.dev/docs/react-use-presence-data).