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MCMS

MCMS

Your server console is a dumpster fire of Java exceptions and cryptic warnings. MCMS fixes that.

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Compatibility

Minecraft: Java Edition

26.1.x
1.21.x
1.20.x
1.19.x
1.18.x

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Details

Licensed MIT
Published last month

Make Console Make Sense (MCMS)

Your server console is a dumpster fire of Java exceptions and cryptic warnings. MCMS fixes that.

Every error message gets translated into plain English (with a bit of sarcasm). No more googling java.net.SocketException: Connection reset at 2am. No more staring at a 40-line stack trace trying to find what actually went wrong.

Before vs After

Before:

[WARN]: java.net.SocketException: Connection reset
[ERROR]: java.lang.NullPointerException
[WARN]: Can't keep up! Is the server overloaded? Running 2034ms or 40 ticks behind
[WARN]: Skipping BlockEntity with id mysticmod:magic_chest

After:

[WARN]: A player ragequit so hard they broke TCP. Respect. RIP connection.
[ERROR]: [MCMS] WHAT: Something was null that really shouldn't have been. Classic developer blunder.
[ERROR]: [MCMS] WHERE: MyPlugin.java:42 in com.example.MyPlugin.doThing()
[WARN]: ALERT: Server is gasping for air! Running 2034ms (40 ticks) behind. Turn off the 500-hopper contraptions, please.
[WARN]: Found a mysterious block entity 'mysticmod:magic_chest'. Probably from a mod someone installed, loved for a week, and uninstalled.

Same information. Actually readable. Slightly sarcastic.

What gets transformed?

  • Network errors — SocketException, timeout, broken pipe → plain disconnect messages
  • Server lag — "Can't keep up!" with exact ms and tick count
  • Plugin errors — enable/disable failures, deprecated API, wrong-thread calls
  • Java exceptions — NullPointerException, StackOverflow, ClassCast, OutOfMemory, and 20+ more
  • World/Chunks — unknown block entities, duplicate UUIDs, chunk failures
  • Player events — joins, disconnects, illegal movement, unknown commands
  • Mojang auth — authentication failures, session servers down
  • YAML/config errors — parse errors with line numbers
  • Startup/shutdown — version info, world loading, save messages

70+ patterns total. And for exceptions, instead of the full stack trace flooding your console, you get:

[ERROR]: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
[ERROR]: [MCMS] WHAT: Something was null that really shouldn't have been.
[ERROR]: [MCMS] TYPE: java.lang.NullPointerException
[ERROR]: [MCMS] WHERE: MyPlugin.java:42 in com.example.MyPlugin.doThing()
[ERROR]: [MCMS] Full stack trace follows:
[ERROR]: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

The full trace still follows — nothing is hidden. You just get the important part first.

Features

  • Drop-in install — zero configuration required
  • Colored startup banner (on supported terminals)
  • Update checker — notifies you in the console when a new version is out, with a link
  • /mcms stats — see how many messages have been transformed this session
  • Works on Paper, Purpur, Spigot, Bukkit, Folia, and all Paper forks

Installation

  1. Download MCMS.jar
  2. Drop it in your plugins/ folder
  3. Restart
  4. That's it

Commands

Command Permission Description
/mcms stats mcms.use Show transformation stats
/mcms update mcms.admin Manually check for updates
/mcms reload mcms.admin Reload config
/mcms help mcms.use Show help

All permissions default to OP only.

Requirements

  • Minecraft: 1.18 or newer
  • Java: 25 or newer
  • Server: Bukkit / Spigot / Paper / Purpur / Folia (any Bukkit-based server)