> ## Documentation Index
> Fetch the complete documentation index at: https://colin-feat-client-cache-mode.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ResourceUpdateHandler

```ts theme={null}
type ResourceUpdateHandler = (uri) => void | Promise<void>;
```

Defined in: [client/handlers.ts:26](https://github.com/PrefectHQ/fastmcp-ts/blob/8976c37f79efa6b87809b884f29a1f235a8c4ad1/src/client/handlers.ts#L26)

## Parameters

### uri

`string`

## Returns

`void` | `Promise`\<`void`>