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 , /modblacklist <add|remove|list>, /modcheckreload

Permissions: granular nodes (.check, .blacklist, .reload, .notify default OP; .bypass default off) Compatibility: Spigot/Paper 1.21.x