PerfClientGuard - Detects Meteor & more v1.3.4

Detects Meteor client and Illegal Mods like Freecam/X-Ray & more!

Overview Dependencies Updates (8) History

1.3.4

Bug fixes:
• Empty message keys in messages.yml no longer send blank chat lines

1.3.3

Bug fixes:
• Fixed player join errors on Folia servers

1.3.2

Bug fixes:
• Deferred join messages are only stored when a real join message exists, so the console stays clean on every login

1.3.0

Improvements:
• The plugin can now detect many more illegal mods, including Meteor client. ^^

1.2.8

New features:
• Added a built-in update checker to all Perf plugins

Improvements:
• New config option: update-checker.enabled: true (enabled by default)

1.5

New features:
• Optional public join message: when enabled, the vanilla join line is hidden until the player triggers at least one ClientGuard rule in that session, then it is broadcast once
• Large generic rule sets can live in generic-rules.yml via generic-rules-file, merged with any extra generic-rules entries in config.yml (existing servers get an empty file key by migration so behavior stays the same until you opt in)
• First run can drop in the bundled generic-rules.yml template next to the main config when the file is missing

Improvements:
• Default cheat/mod signature list extended with additional common client and addon hints; LiquidBounce, ThunderHack, and Sigma patterns broadened in a controlled way
• Some patterns were kept narrow (e.g. client-style names) to reduce accidental matches on legitimate mods or chat

Technical:
• Config version 19–20 migrations for join-message and generic-rules-file defaults

1.4

Improvements:
• Staff join chat alert no longer sends the long “server-visible network data / not a mod-folder scan” disclaimer by default, so staff chat stays cleaner
• Optional hint remains: enable admin.staff-join-notify.show-fingerprint-hint and set staff-join-fingerprint-hint in messages.yml if you want a custom second line

Technical:
• Config migration to v18 turns show-fingerprint-hint off on upgrade; bundled config-version is 18

1.3

Bug fixes:
• /clientguard no longer throws when a player’s client brand contains legacy § color codes (e.g. some modded clients); the brand is shown as plain text instead of crashing MiniMessage
• Staff join notifications use the same safe handling so malformed brand strings in alerts cannot break the message pipeline
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EULA
Standard EULA
Use on any projects you own with attribution
Support
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Support duration
Lifetime
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1,591 Views
7 Purchases
103 Downloads
Apr 9, 2026 Published
Jun 12, 2026 Updated
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404.2 KB File size
1-21 anticheat clients donutsmp folia modded paper security
Open source
  1. No
DRM-free
  1. Yes
Unobfuscated
  1. No
Type
  1. Protection
  1. Staff
  1. Anticheat
Game mode
  1. Survival
  1. Lifesteal
  1. Donut-like
Supported software
  1. Paper
  1. Folia
Supported versions
  1. 26.1
  1. 1.21.11
  1. 1.21.8
  1. 1.21.5
  1. 1.21.4
  1. 1.21.2
  1. 1.21
Supported languages
  1. English
Creator
Owner
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