> ## Documentation Index
> Fetch the complete documentation index at: https://fastmcp-ts.docs.prefect.io/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/e4b6038f642b529f601463a576229747afebe9a4/src/server/apps/components.ts#L175)

## Parameters

### expression

`string`

## Returns

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