> ## 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.

# Rx

```ts theme={null}
function Rx(expression): Component;
```

Defined in: [server/apps/components.ts:175](https://github.com/PrefectHQ/fastmcp-ts/blob/8976c37f79efa6b87809b884f29a1f235a8c4ad1/src/server/apps/components.ts#L175)

## Parameters

### expression

`string`

## Returns

[`Component`](/api/server/interfaces/Component)