---
title: Cooldown
description: "Play 0x16, server → client."
---

`play` · `0x16` · **clientbound** (server → client)

Applies a use cooldown to all items in the cooldown group `cooldownGroup` for `cooldownTicks` ticks (for example after using an ender pearl or chorus fruit). A value of 0 removes the cooldown. The client greys out the item overlay and blocks use until the cooldown ends.

Sent by the server, read by the client. Listen for it with `client.on("Cooldown", (data) => …)` on the receiving side.

## Fields

| Field | Type | Notes |
|---|---|---|
| `cooldownGroup` | String | also `group` |
| `cooldownTicks` | VarInt | also `ticks` |

## Send it

```ts
await client.sendPacket("Cooldown", {
  cooldownGroup: /* String */,
  cooldownTicks: /* VarInt */,
});
```

Field aliases listed under Notes are accepted as alternative keys when writing.

Source: [`src/Core/Versions/776/Packets/play/clientbound/Cooldown.ts`](https://github.com/GDLev/mc-protocol/blob/master/src/Core/Versions/776/Packets/play/clientbound/Cooldown.ts)