MythicalAC
1.12Server-side anticheat for Forge 1.20.1 & Paper 1.21.x. Detects movement, combat, build & inventory hacks (Fly, Speed, Reach, KillAura, Scaffold, AutoTotem, Nuker) with configurable checks and rubber-b
1.12latestMythicalAC 1.12Aug 15, 2026 Bug you hit Cause Fix NoFall on a block edge The support check needed the whole footprint over a block; on an edge most of it hangs over air Now uses the real downward ground scan — a foot still on the block reads distance 0, so edges, slabs, stairs, and fences are all safe Fly when jumping off cliffs A cliff-jump rises while the ground drops away below you, which looked like "not-falling + high above ground" Fly hover now needs near-level flight (dy between −0.04 and 0.10) sustained 8 ticks — a jump arc rises/falls through that band in 1–2 ticks, so it can't trip. A separate rise-tick counter still catches real ascend-fly (rising longer than any jump could) Phase through a trapdoor / lag A lag catch-up jumps far in one tick, and the straight-line ray clips a corner/trapdoor you actually walked around The wall-cross check is now capped at normal walking speed (horiz < 0.45), so lag jumps aren't read as phasing Bed entry from far down Sleeping snaps you onto the bed — a sudden position jump Bed enter and leave now grace the movement tracker Shulkers Shulker-bullet levitation floats you up; when it ends you keep upward momentum Levitation already exempted vertical checks; added a 20-tick fade-out so the leftover momentum is graced too1.11MythicalAC 1.11Jul 23, 2026 Fixed Respawn Bug1.1MythicalAC 1.1.0Jul 21, 2026 Fixed Falling Blocks false alerts1.0.9MythicalAC 1.0.9Jul 14, 2026 1.0.8MythicalAC 1.0.8Jul 14, 2026 1.0.7MythicalAC 1.0.7Jul 14, 2026 1.0.6MythicalAC 1.0.6Jul 13, 2026 1.0.5MythicalAC 1.0.5Jul 13, 2026 1.0.4MythicalAC 1.0.4Jul 13, 2026 Fixed False Positives1.0.3MythicalAC 1.0.3Jul 13, 2026 Slime / bed bounces — a bounce now grants a 30-tick grace on Fly + HighJump, so getting launched off slime or a bed doesn't flag while you're rising. Wind charges — a wind-charge burst launches you with no damage and no explosion event, so I hook ProjectileHitEvent and grace nearby players.1.0.2MythicalAC 1.0.2Jul 13, 2026 Mythical AC — Update (Paper 1.21.11)New checks InventoryMove — flags moving while a container (chest / furnace / anvil / etc.) is open. Needs 3 sustained ticks so opening a chest mid-stride doesn't false-flag. AutoTotem — flags a totem appearing in the offhand from the main inventory (not a hotbar F-swap) while moving — impossible legit, since the inventory screen freezes movement.
Staff tools Clickable alerts — staff flag messages are now interactive: hover to explain the flag, click to jump straight to that player's violation history. No more guessing what an alert meant. /mac history <player> — the player's last 20 violations, each with the value that tripped it (Speed +3 (h=0.81)) — false positives explainable at a glance. /mac top — online players ranked by violation level (vl / flags / kicks). Instant "who's sus right now." Every alert logs the exact value (BoatSpeed 4.2 b/t, Reach 3.7 m) — staff see why, not just that.
Full command set /mac · info · history · top · pardon · check <name> on/off · obfuscation <fakeores/hide> on/off
1.0.1MythicalAC 1.0.1Jul 12, 2026 1.0.0MythicalAC Paper 1.0.0Jul 12, 2026
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