ClientCheck
ModrinthSpigotMCDetects and blocks forbidden client mods with a configurable blacklist.
ClientCheck — Mod detection & blacklist plugin for Spigot 1.21
ClientCheck detects the mods installed on connecting players and takes action against forbidden ones (cheat clients, X-ray tools, etc.), helping keep your server fair.
Key features:
Mod detection — Scans a player's client mods shortly after join (configurable delay)
Blacklist system — Pre-configured list of common cheat/utility mods (Wurst, Impact, Meteor Client, Baritone, LiquidBounce, Killaura, X-ray, Freecam, Speedhack, and more), fully editable
Whitelist exceptions — Legitimate performance mods (Sodium, Lithium, Iris, Fabric API) never flagged
Configurable action — KICK, BAN, WARN, or LOG_ONLY
Admin notifications — Real-time alerts for staff when a blacklisted mod is detected
Logging — Console logging plus a persistent log file (date, player, UUID, mod, action)
Bypass permission — Trusted players/staff can be exempted
Commands — /modcheck
Permissions: granular nodes (.check, .blacklist, .reload, .notify default OP; .bypass default off)
Compatibility: Spigot/Paper 1.21.x
Versions
FAQ
How do I install ClientCheck?
Download the file for your Minecraft version and loader from this page, then drop the .jar into your mods (or plugins) folder and launch the game.
Is ClientCheck free?
ClientCheck is free to download on Modgrid — we link straight to the official source, no paywall or bundled installer.
Which Minecraft versions does ClientCheck support?
Works with Paper, Spigot. Supports versions 1.21–1.21.11. See the download section on this page for the full list of supported versions and loaders.
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