Server-side anticheat for Fabric 1.21.1
No client mod required. One jar. Every check enabled by default.
⚡ 35 Detection Modules
| Movement | Combat | World | Client |
|---|---|---|---|
| ⚡ Fly | 🗡️ Reach | 🧱 Scaffold | 🖱️ AutoClicker |
| 🏃 Speed | 🌀 KillAura | 🗼 Tower | 🧿 AutoTotem |
| 👻 Phase | 👻 GhostTrap | ⛏️ FastBreak | 🎒 Inventory |
| 🐌 NoSlow | 💥 Criticals | 🧱 FastPlace | ⏱️ Timer |
| 🌊 Jesus | 💨 Velocity | 🪂 NoFall | 📦 BadPackets |
| 🏁 Sprint | 🎯 Rotation | 🧱 AirPlace | 🍖 FastUse |
| 🛶 BoatFly | 🎯 PostKillSnap | ||
| 🐴 VehicleFly | 🎯 AimAssist | ||
| 🦅 ElytraFly | 🔨 MaceSmash | ||
| 🪜 Step | 💨 WindCharge | ||
| 🦶 GroundSpoof | |||
| 🌀 Teleport | |||
| 🔮 Y-Prediction |
Each check runs independently. Own sensitivity, own cooldown, own response action. Toggle on or off. One config file.
🔮 Smart Engine
🧠 Physics Prediction — Simulates vanilla gravity tick by tick. Compares predicted position to actual. Catches fly and hover that threshold checks miss.
💚 Impulse — Real knockback is not a fly hack. Damage, explosions, wind charges, riptide and a real mace smash get a short pass so fair combat stays quiet.
🛑 Mitigation — Illegal fly, speed, blink, reach, air-place and Wind Charge can be cancelled before they apply. The player rubberbands to last safe ground.
🌐 Lag Compensation — Thresholds scale with each player's latency. No configuration needed.
🔄 Violation Decay — VL decreases over time without new flags. Clean players recover on their own.
↩️ Setback — Silent teleport to last safe position instead of disconnect.
📊 Confidence Scoring — Evidence from multiple checks is weighed together, so isolated incidents do not escalate into punishment.
⚙️ Actions
Every check carries its own configurable response:
| Action | Behavior | |
|---|---|---|
| ⚠️ | Warn | Alert the player, log the violation |
| 🧊 | Freeze | Hold in place while staff look |
| 🚪 | Kick | Immediate disconnect |
| 🔨 | Ban | Permanent, automatic |
| ↩️ | Setback | Silent teleport to last safe position |
🖥️ Web Dashboard
A local admin panel at 127.0.0.1:8765:
- Live TPS and MSPT — server performance at a glance
- Player profiles — violations, evidence, recent incidents
- Quick actions — reset violations, toggle whitelist, no commands needed
- Incident feed — review flags with context
🔔 Integrations
📣 Staff Alerts — Every flag reaches OP2+ in real time, with cooldown protection. Player names are clickable — one click opens a full inspect.
💬 Discord Webhook — Rich embeds with full details. One line in config.
📋 Evidence Store — Compact review packets for every flag, saved persistently.
🗂️ History — Per-player violation log that works offline.
🔗 Event API — PraxicViolationEvent for custom mod integrations.
🔥 REVEX — Escalation Addon
Graduated punishment system built on top of PRAXIC.
Warn → 15 min → 1 hour → 1 day → permanent. Fully automatic.
💬 Commands
| Command | Description |
|---|---|
/praxic status |
Module overview — 35 checks |
/praxic stats |
Session flags, top checks, top players |
/praxic check <player> |
Player inspect with confidence bar |
/praxic violations |
Server-wide overview |
/praxic evidence [player] |
Review evidence packets |
/praxic perf |
Server & anticheat performance |
/praxic debug <player> |
Record 30s of tick data |
/praxic tp <player> |
Teleport to last flag (any world) |
/praxic reset <player> |
Clear a record |
/praxic reload |
Hot-reload config |
/praxic whitelist add|remove|list |
Bypass for trusted players — works offline |
/praxic history <player> |
Persistent log — works offline |
All commands require OP level 2.
🚀 Setup
-
Install Fabric Loader + Fabric API for 1.21.1
-
Drop the jar into
mods/ -
Start the server — done.
Config generates at config/praxic.json. Apply changes with /praxic reload.
Open source · Apache 2.0 · Source Code · Report a bug
Active development — detection improves with every release.
| Version | Minecraft | Loader | Download |
|---|---|---|---|
|
PRAXIC AntiCheat 0.17.0 0.17.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.16.1 0.16.1 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.16.0 0.16.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.14.0 0.14.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.12.1 0.12.1 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.11.0 0.11.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.10.0 0.10.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.9.0 0.9.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.8.0 0.8.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.7.1 0.7.1 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.6.0 0.6.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC AntiCheat 0.5.0 0.5.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.4.1 — FIX 0.4.1 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.4.0 — Update Engine 0.4.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.3.0 0.3.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.2.0 0.2.0 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.1.2 0.1.2 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.1.1 0.1.1 |
1.21.1
|
fabric
|
Download |
|
PRAXIC 0.1.0 0.1.0 |
1.21.1
|
fabric
|
Download |