StoneAC is an anticheat addon I made to work alongside GrimAC. GrimAC is really good at catching movement cheats but it leaves some gaps, especially in combat and inventory stuff. StoneAC covers all of that.
It catches things like autoclickers, killaura, silent aim, and antiknockback on the combat side. For inventory it handles cheats like chestsealers, autoarmor, and autototem. It also has a nuker check, instabreak detection, jesus, and strafe/orbit killaura patterns.
You need GrimAC and PacketEvents installed for it to work. Think of it as the missing piece that makes GrimAC complete.
StoneAC v1.0.0 Paper 1.21.4 · Java 21 · requires PacketEvents · softdepend on GrimAC
40 checks covering what GrimAC doesn't:
Combat: AutoClicker, KillAura (6 sub-checks), AimAssist, SilentAim, Triggerbot, AntiKnockback, Criticals, Reach, FightBot, KillPotion, TPAura Inventory: ChestStealer, AutoArmor, AutoTotem, FastInventory, AutoEat, AutoPotion, FastEat World: Nuker, InstaBreak, VeinMiner, AutoFarm, AutoFish, AutoRespawn, AutoSwitch, AutoMine Movement: Jesus, Strafe, Blink, InvWalk, AntiAFK, HighJump, FastLadder, NoWeb, Regen, AntiHunger, AntiCactus, AntiPotion, Parkour, SneakSpam GrimAC integration:
Alerts route through GrimAC's staff chat pipeline automatically Players with grim.staff get full StoneAC admin access without extra config Players with grim.alerts receive StoneAC flags in their alert feed Duplicate admin features (freeze, spectate, GUI, broadcast) auto-disable when GrimAC is detected Admin: /sac violations|freeze|unfreeze|spectate|gui|info|reload
Check https://github.com/stone380380alt-arch/StoneAC for set up and fully updated description
Please report bugs at https://github.com/stone380380alt-arch/StoneAC/issues to help improve performance
Bug fixes and improvements coming today
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as StoneAC-1.0.0.jar — drop this file into the mods folder
- Download size: 116 KB
- Download link checked 21 Aug 2026 — working
These come from our own check of the pack file, not from the source page.
