CheckHacks vs GK AntiCheat

CheckHacks is a free, server-side Minecraft anticheat that detects client-side mods and hack clients using the Sign Translation Vulnerability. Players do not need to install a client mod: the plugin briefly places signs with special translation keys and checks the client’s response. Administrators can choose METEOR, TRANSLATE, or KEYBIND detection modes for each mod and add custom detections in checkhacks.yml. DoubleCheck repeats scans that return DETECTED or PROTECTED to help reduce false positives. CheckHacks can check players after Grim, Vulcan, Spartan, or Matrix flags them, and supports custom commands and detection alerts. A browser editor running on the game server lets administrators review scan history, look up players, and start checks. Access uses one-time tokens, while scan records are kept in a built-in SQLite database. Named server platforms include Bukkit, Folia, Paper, Purpur, and Spigot, with Minecraft versions 1.21 and later listed. The maker warns that client patches can temporarily block the detection method. The project is MIT-licensed, and donations are optional.

GK AntiCheat is a Minecraft server plugin that checks players to deter hacked clients from entering a server. Its listed verification flow asks a player to send a random code using a .say command supplied through tellraw. Administration commands cover help, configuration reloads, whitelist changes, and player-record checks. Detection targets include hacked clients and spamming bots, with kicking, automatic bans, and whitelist exclusion listed as enforcement actions; automatic bot kicking is still being tested. The plugin is listed for Spigot and tested on Minecraft versions 1.8 through 1.16, though its native major version is Legacy, below 1.13. Configuration languages include German and Chinese, and compatibility is listed with SkillAPI, other skill plugins, and other anti-cheat plugins. The author says it is mainly for Kit PvP or SkillAPI servers and recommends pairing it with another anti-cheat for survival servers. It has a free plan and paid access from $4.99 one-time. The author also warns that some hacked clients can bypass it and that update time is limited.