> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sublay.io/llms.txt
> Use this file to discover all available pages before exploring further.

# useSetRsvp

> Set or change the logged-in user's RSVP to an event

## Overview

`useSetRsvp` returns a callable that sets or changes the logged-in user's RSVP. The event's `rsvpCounts` update atomically. A transition into `going` is capacity-checked. RSVPs close at `startTime`, are rejected on cancelled events, and `"maybe"` is rejected when `allowMaybe` is `false`.

## Usage Example

```tsx theme={null}
import { useSetRsvp } from "@sublay/react-js";

function GoingButton({ eventId }: { eventId: string }) {
  const setRsvp = useSetRsvp();
  return <button onClick={() => setRsvp({ eventId, status: "going" })}>Going</button>;
}
```

## Parameters

<ParamField path="eventId" type="string" required>The event ID.</ParamField>
<ParamField path="status" type="&#x22;going&#x22; | &#x22;maybe&#x22; | &#x22;not_going&#x22;" required>The RSVP response.</ParamField>

## Returns

Returns a `Promise<Event>` — the [Event](/data-models/event) with refreshed `rsvpCounts` and `userRsvp`.

## See Also

* [Set RSVP API](/api-reference/events/set-rsvp)
* [useWithdrawRsvp](/hooks/events/use-withdraw-rsvp)