UI Utils Documentation

Overview Of Features

UI-Utils has many features, which will be documented here. When opening an inventory / container with UI-Utils, you will notice some extra features, here is a list of those features with descriptions:

Close without packet

Close your GUI without sending a CloseHandledScreenC2SPacket to the server.

De-sync

Send a CloseHandledScreenC2SPacket without closing your GUI client-side.

Send packets: true / false

When enabled, no GUI related packets will be sent to the server (ClickSlotC2SPacket and ButtonClickC2SPacket.)

Delay packets: true / false

When enabled, no GUI related packets will be sent to the server (ClickSlotC2SPacket and ButtonClickC2SPacket) until disabled, then, all delayed packets will be sent in the same tick.

Save GUI

Saves your GUI internally and can be re-opened using a key-binding (default key-binding is 'v',) this works well with the "Close without packet" feature.

Disconnect and send packets

Sends all queued packets from "Delay packets", then, immediately disconnects from the server.

Fabricate packet

Opens a window that allows you to send any GUI packet any amount of times (see 'Fabricate Packet Feature' for more information.)

Copy GUI Title JSON

Copies your GUI's title as JSON.

Sync Id: ??

Shows your GUI's sync ID.

Revision: ??

Shows your GUI's revision ID.

The text box below is a chat field for chatting or running commands while in a GUI. Another random feature allows you to wake up out of a bed (client-side) by clicking the "Client wake up" button while in a bed. You can also bypass required resource packs on servers by enabling "Bypass Resource Pack" in the multiplayer screen, if you still get kicked, enable "Force Deny" to block all server resource packs. All of those features can be disabled / enabled by running "^toggleuiutils" in chat.

Fabricate Packet Feature

Using the fabricate packet feature, you can create any GUI packet and send it any amount of times. When clicking Fabricate packet, you will see a window prompting you for a packet to send:

Click Slot Packet

When selecting "Click Slot", a window appears with several fields:

• Sync Id: Should match the "Sync Id" field shown in your in-game GUI
• Revision: Should match the "Revision" field shown in your in-game GUI
• Slot: Numeric ID for the inventory slot you want to interact with
• Button: Which mouse button is being clicked:
  • • 0: Left click (or no button)
  • • 1: Right click
  • • 0-8: Hotbar slot (when using SWAP)
  • • 40: Offhand (when using SWAP)
• Action: Type of click action:
  • • PICKUP: Click item
  • • PICKUP_ALL: Double click item
  • • QUICK_MOVE: Shift click item
  • • SWAP: Swap item to hotbar
  • • CLONE: Middle click item
  • • THROW: Drop item
  • • QUICK_CRAFT: Used for quick crafting

Button Click Packet

When selecting "Button Click", you can send a ButtonClickC2SPacket, which can click buttons on a GUI, such as enchantments in an enchanting table.

• Sync Id: Should match the in-game "Sync Id" field
• Button Id: Numeric ID of the button (starting at zero)

Building And Installation

Building From Source

Linux Build Instructions

To build your own jar file, download a source code archive (ui-utils-x.x.x.tar.gz or ui-utils-x.x.x.zip), extract it, then open a terminal in that directory and run:

Verify the output against the official Gradle checksums (use CTRL+F to search). Then build the jar file:

Windows Build Instructions

On Windows, follow these steps:

1. Download and extract the source code archive
2. Verify the SHA256 checksum of ./gradle/wrapper/gradle-wrapper.jar using a tool like PowerToys or Get-FileHash in PowerShell
3. Check that the hash appears in the official Gradle checksums
4. Open Command Prompt in the extracted folder
5. Run the build command:

After building, your jar file will be located at ./build/libs/ui-utils-x.x.x.jar.