Zenith AntiCheat Lite

🎉 First release on Modrinth

Zenith AntiCheat Lite is a free packet-level anti-cheat for Paper 26.2, focused on crystal and anchor PvP.

⚔️ Checks

💎 CrystalAura: impossible actions are cancelled automatically

• IdPrediction: attacking a crystal before the server has shown it ("ID predict")
• MultiPlace: placing at several spots in a single tick
• InstantInteract: using a block in the same tick it was placed
• SwapAfterAction: hotbar swaps after an action within one tick (macros)
• AttackAfterUse: place-then-break in the same tick (zero-tick crystal aura)

⚓ AnchorAura

• AnchorChain: anchors placed, charged and detonated faster than any vanilla client can

🪬 AutoTotem

• Reaction: totem refills faster than human reaction after a pop
• InstantSession: pick up and drop a totem on the offhand within one tick
• TotemAfterAction: totem swapped in after the tick's attacks (auto-totem macros)
• HealthReaction (optional, off by default): refills right after a heavy hit

⏱️ Timer

• Timer: game clock running too fast (ping-anchored, lag-safe)
• Blink: movement held back and released in a burst
• MultiMove: more than one position update per tick

🎒 Inventory

• Move / Sprint / ActionWhileOpen: moving, sprinting, attacking, placing or mining with an inventory open

✨ Highlights

• ✅ Built to avoid false flags: rules only catch what vanilla clients cannot do, or timings beyond human reaction that must repeat
• 🎯 Tick-accurate: measured in client ticks, so ping and lag don't cause flags
• 🧩 Plugin friendly: NPCs and holograms from other plugins are never touched
• 📱 Bedrock friendly: Geyser/Floodgate players are never judged by Java-only checks
• ⚡ Lightweight: nothing runs on the main thread
• 🔄 Automatic config upgrades in future updates

📦 Requirements

• Paper 26.2 (or a fork like Purpur), Java 25
• PacketEvents 2.13.0+

💬 Commands

• /zenithlite status: tracked players and active checks
• /zenithlite alerts: toggle staff alerts (permission zenith.alerts)