A packet-level anticheat built to catch what other plugins miss, and engineered to never ban a legitimate player on a hunch. Staged punishments, async checks, and alerts that reach you before the complaints do.
Free tier available · No credit card required
Alerts stream to console, in-game staff chat, and Discord webhooks.
WHY SCULK
Sculk inspects the packet stream, not just the symptoms. Rotation snaps, spoofed clocks, malformed traffic — the fingerprints cheats leave before anything visible happens on screen.
Punishments are staged: flag, log, setback, then ban wave. A single suspicious moment is never a ban. Sustained, repeated evidence is.
Checks run asynchronously off the main thread. Sculk is built to be invisible in your timings report, even at peak player counts.
In-game staff alerts, console logs, verbose mode for tuning, and Discord webhooks — so detections reach you before player complaints do.
DETECTION BENCHMARKS
Each Sculk detection track is laid out like a benchmark, with the exact precision, recall, and F1 fields that matter. We leave them blank until a versioned replay suite and review record can back them up.
COMBAT
A replay track for rotation, target switching, reach boundaries, and click cadence that no player should have to guess at.
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PRECISION
Keeps legitimate players out of the ban path.
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RECALL
Measures whether the intended replay fixture is caught.
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F1 SCORE
Balances both sides before a release can graduate.
CHECK FAMILIES IN THIS TRACK
MOVEMENT
A controlled set of terrain, effects, latency, and clock conditions for Fly, Speed, Timer, and Phase checks.
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PRECISION
Keeps legitimate players out of the ban path.
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RECALL
Measures whether the intended replay fixture is caught.
—
F1 SCORE
Balances both sides before a release can graduate.
CHECK FAMILIES IN THIS TRACK
CHECK COVERAGE
Catches clients that attack for the player — impossible rotation snaps, hits on targets outside the field of view, and attack patterns no human hand produces.
Flags hits landed beyond survival attack range, accounting for latency so laggy-but-legit players aren't punished.
Detects inhuman click patterns: sustained high CPS with zero natural jitter, perfectly even intervals, and machine-consistent bursts.
Catches anti-knockback: players who take reduced or zero knockback when hit, in ways vanilla movement can't explain.
Flags ground and air movement faster than vanilla physics allows, with awareness of ice, soul speed, potion effects, and lag.
Detects clients running the game clock fast: movement packets arriving at a rate ahead of server time, which powers many speed-type cheats.
Catches players clipping through solid blocks — walls, floors, and ceilings that vanilla collision would never let them pass.
Detects automated bridging: placing blocks beneath yourself at speed, with the flat aim and zero look-down that real bridging can't avoid.
TRUSTED BY SERVERS LIKE YOURS
PRICING
Core protection for small servers.
Free
The full check suite for serious servers.
$19.99 AUDper server, one-time
One licence for your whole network.
$49.99 AUDper network, one-time
Put Sculk on your server and let cheaters find out. Free tier installs in minutes; Premium is one payment, yours forever.