Utility Mods

These mods provide useful tools and features that enhance your Minecraft experience with practical functionality.

Communication

Simple Voice Chat

Proximity voice chat for multiplayer.

Talk to nearby players using your microphone. Perfect for multiplayer servers and LAN games.

Features:

• Proximity-based voice
• Group channels
• Configurable range
• Push-to-talk or voice activation
• Volume controls per player

Default Key: V (push to talk)

Settings: Mods → Simple Voice Chat

Caution

Voice chat only works on servers that have Simple Voice Chat installed. It won’t work on vanilla servers.

Setting	Recommended
Activation	Push to Talk
Voice Distance	48 blocks
Microphone	Your preferred input

CraftPresence

Discord Rich Presence.

Shows your Minecraft activity in Discord, including what server you’re playing on and game details.

Features:

• Server name display
• Player count
• Custom status messages
• Dimension display

Settings: Mods → CraftPresence

Storage

Traveler’s Backpack

Extra portable storage.

Craftable backpacks that provide additional inventory space you can carry with you.

Features:

• Large storage capacity
• Sleeping bag included
• Tool slots
• Customizable colors
• Fluid tank

Crafting: Check the recipe in-game

Usage: Place backpack or wear it and press B to open

Tip

Backpacks can be placed in the world as blocks or worn on your back!

Building Tools

WorldEdit CUI

WorldEdit visualization.

If you use WorldEdit on a server, this mod shows your selection visually with a wireframe box.

Features:

• Selection visualization
• Grid overlay
• Works with server-side WorldEdit
• Multiple selection display

Note

This is a client-side visualization only. You need WorldEdit installed on the server to actually use WorldEdit commands.

Debugging & Profiling

spark

Performance profiler.

A powerful profiling tool to analyze performance issues and find lag sources.

Commands:

/spark profiler start    - Start profiling
/spark profiler stop     - Stop and view results
/spark health           - Show server health
/spark tps              - Show TPS information

When to Use:

• Experiencing lag or low FPS
• Want to optimize your modpack
• Debugging performance issues
• Analyzing server performance

Crash Assistant

Better crash handling.

When Minecraft crashes, Crash Assistant provides more helpful information and can identify which mod likely caused the issue.

Features:

• Mod identification in crashes
• Clearer crash reports
• Suggested solutions
• Easy crash log access

Privacy & Security

No Chat Reports

Disable chat reporting.

Removes the chat reporting feature added in 1.19.1, preventing reports and signature-related disconnects.

Features:

• Disables chat reporting
• Removes signature requirements
• Server compatibility modes
• No gray “unsigned” messages

Settings: Mods → No Chat Reports

Note

Some servers require chat signatures. If you can’t connect, check No Chat Reports settings.

Included Libraries

These mods are dependencies required by other mods:

Library	Used By
Fabric API	Most mods
Fabric Language Kotlin	Kotlin-based mods
Cloth Config	Configuration menus
YACL	Configuration menus
MidnightLib	Various mods
Puzzles Lib	Puzzle, animations
Cardinal Components API	Data storage
LibIPN	Inventory Profiles Next
UniLib	Various mods
Forge Config API Port	Forge-style configs
Placeholder API	Text placeholders
YOSBR	Default configurations

About YOSBR

YOSBR (Your Options Shall Be Respected) allows modpacks to ship with default configuration files that only apply if you don’t have existing settings. This is how Lumo Optimized provides pre-configured defaults without overwriting your preferences.

Summary

Mod	Primary Use
Simple Voice Chat	Multiplayer communication
CraftPresence	Discord integration
Traveler’s Backpack	Extra storage
WorldEdit CUI	Building visualization
spark	Performance debugging
Crash Assistant	Crash analysis
No Chat Reports	Privacy