---
title: Update Tags
description: "Play 0x86, server → client."
---

`play` · `0x86` · **clientbound** (server → client)

Sends registry tags (block, item, fluid, entity type, etc.) so the client knows tag membership for prediction and rendering. The server sends it after login and after datapack reload. In 1.20.2+ this is normally sent in configuration state but is still valid in play.

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

## Fields

| Field | Type | Notes |
|---|---|---|
| `tags` | Array |  |

## Send it

```ts
await client.sendPacket("UpdateTags", {
  tags: /* Array */,
});
```

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

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