Grace Anticheat vs MLSAC

Grace Anticheat is a free, self-hosted anticheat for Java Minecraft servers. It targets closet cheating, ghost cheating and blatant hacking through rules-based detection and statistical analysis of player behavior. Servers can run a proxy arrangement with a Velocity plugin and Paper companion plugin, or choose a standalone Paper plugin without Velocity. The proxy setup requires Velocity 3.3.0 or later, Paper 1.19 or later and Java 21 or later; the standalone listing covers Minecraft Java 1.19.x, 1.20.x and 1.21.x. Grace can alert staff in-game and send formatted Discord webhook embeds. Configuration supports teleporting players back on hard alerts, kicking on action alerts and optional automatic bans, disabled by default. Staff commands expose engine status, evidence summaries, alert controls, violation history and configuration reloads. Grace is beta 0.1.0 and actively developed. Its API and related components are open source, while detection logic, model weights and threshold tuning are closed source.

MLSAC is a neural-network anti-cheat plugin for Minecraft servers. It examines combat camera movement and surrounding packets for patterns associated with KillAura, TriggerBot, AimAssist, Reach, and hits through walls. The plugin sends combat camera and body movement, hit details, and player names and UUIDs to MLSAC's cloud for model scoring; it does not send chat or inventory data. The maker says this remote analysis does not use the Minecraft server's CPU or TPS for detection. Setup involves installing the plugin, entering a licence key, and choosing a preset configured on the website. No client mod is required, and PacketEvents is included in the plugin jar. Server owners can configure responses including damage reduction, kicks, and bans. The dashboard provides licences, keys, presets, statistics, and player dossiers. The free Beginner plan includes the Mini model; Pro and Pulse require paid plans, and Pulse also requires project verification. Ultra is early access for plugin 2.0 and cannot run alongside other models. When a plan's daily request limit is reached, checks pause until the next day.