NoChance AntiCheat

Anti-cheat with trust-based system and 4-layer validation cascade system & packet analysis

Загрузки: 2K
Подписчики: 11
Обновлён: 16 мая 2026 г.
Лицензия: MIT

Опубликован 2 декабря 2025 г.

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NoChance - Multi-Layer Anti-Cheat

PacketEvents Required for 1.21.x PacketEvents

Note: Plugin can work without it but it may cause problems

Description

NoChance is a anti-cheat with a 4-layer validation cascade system and also with packet-level detection. Designed to catch cheaters while minimizing false positives through trust scoring, adaptive sampling, and statistical analysis.

Features

18 Detection Modules - Fly, Speed, KillAura, FastBreak, Reach, NoClip, Jesus, Blink, Timer, and more
4-Layer Validation System - Multi-stage verification to eliminate false positives
PacketEvents Integration - Deep packet analysis for advanced cheat detection (1.21-1.21.8 support)
Trust Score System - Players build trust over time, reducing false flags for legitimate skilled players
In-Game GUI Configuration - Edit all settings via interactive menu, no file editing needed
Database Support - SQLite & MySQL support with HikariCP connection pooling for optimal performance
Staff Alerts - Real-time notifications with customizable thresholds and alert throttling
Discord Webhooks - Send violation alerts directly to Discord with rich embeds
Punishment System - Automatic kicks, warnings, and configurable actions
Per-Check Configuration - Fine-tune every detection module independently
Server Optimizations - Adaptive sampling, async processing, and batch operations

Commands

/nochance menu - Open configuration GUI
/nochance reload - Reload configuration
/nochance info - View player statistics
/nochance violations - View violation history
/nochance reset - Reset player data
/nochance toggle - Enable/disable specific check
/nochance stats - View global statistics
/nochance alerts - Toggle staff alerts

Aliases: /nc, /ac, /anticheat

Permissions

nochance.admin - Access to all NoChance commands (default: op)
nochance.alerts - Receive staff alert notifications (default: op)
nochance.bypass - Bypass ALL anti-cheat checks (default: false)
nochance.bypass. - Bypass specific check (default: false)

Individual Check Bypasses

nochance.bypass.fly
nochance.bypass.speed
nochance.bypass.noclip
nochance.bypass.jesus
nochance.bypass.fastbreak
nochance.bypass.fastplace
nochance.bypass.nuker
nochance.bypass.killaura
nochance.bypass.nofall
nochance.bypass.autoclicker
nochance.bypass.reach
nochance.bypass.inventory
nochance.bypass.scaffold
nochance.bypass.timer
nochance.bypass.velocity
nochance.bypass.criticals
nochance.bypass.phase
nochance.bypass.step
nochance.bypass.blink

Default Config Preview

Click to view config.yml

general:
  time_window_seconds: 60
  grace_period_seconds: 5
  min_samples: 5
  op_exempt: true
  notify_player_on_flag: true

thresholds:
  low_confidence: 0.70
  medium_confidence: 0.85
  high_confidence: 0.95
  extreme_confidence: 0.98

advanced_filtering:
  enabled: true
  bayesian_prior: 0.05
  z_score_threshold: 2.5
  min_trust_score: 0.3
  established_baseline_checks: 50
  established_baseline_time_seconds: 60

actions:
  kick_on_extreme_confidence: true
  kick_on_high_confidence: false
  warn_on_high_confidence: true
  warn_on_medium_confidence: true
  log_low_confidence: true

statistical:
  std_dev_multiplier: 3.0
  outlier_forgiveness: 3

performance:
  async_thread_pool_size: 4
  database_max_pool_size: 10
  database_min_idle: 2
  database_connection_timeout_ms: 30000
  database_idle_timeout_ms: 600000
  database_max_lifetime_ms: 1800000
  database_batch_size: 50
  database_batch_interval_ms: 500
  adaptive_sampling_enabled: true
  adaptive_sampling_warmup_checks: 100
  advanced_analysis_warmup_checks: 100
  advanced_analysis_strict_threshold: 500

checks:
  fly:
    enabled: true
    threshold: 4
    severity_multiplier: 2.2
    max_velocity_y: 0.52

  speed:
    enabled: true
    threshold: 5
    severity_multiplier: 2.8
    max_speed: 0.36
    sprint_multiplier: 1.32
    ice_multiplier: 2.6

  killaura:
    enabled: true
    threshold: 4
    severity_multiplier: 3.4
    max_reach: 3.2
    max_angle: 48.0
    max_rotation_speed: 650.0
    max_cps: 17.0
    cps_trusted_bonus: 2.0
    cps_untrusted_penalty: 2.0
    instant_flag_cps_over: 6.0
    angle_trusted_bonus: 8.0
    angle_untrusted_penalty: 5.0
    instant_flag_angle_over: 18.0
    rotation_trusted_bonus: 60.0
    rotation_untrusted_penalty: 50.0
    instant_flag_rotation_over: 140.0
    rotation_variance_threshold: 40.0
    rotation_variance_strict: 20.0
    required_violations: 2
    packet_variance_threshold: 25.0
    packet_variance_strict: 12.0
    packet_attack_rate_limit: 22

  fastbreak:
    enabled: true
    threshold: 10
    severity_multiplier: 1.8
    min_check_interval_ms: 25
    max_rapid_checks: 15
    trust_score_bonus: true
    require_multiple_systems: true
    base_tolerance_ms: 50
    percentage_tolerance: 0.10
    shovel_instant_tolerance_ms: 45
    shovel_instant_percentage: 0.25
    hand_instant_tolerance_ms: 28
    hand_instant_percentage: 0.18
    trust_bonus_instant_ms: 15
    trust_bonus_normal_ms: 50

database:
  type: SQLITE
  host: localhost
  port: 3306
  database: nochance
  username: root
  password: password
  table_prefix: nc_

discord:
  enabled: false
  webhook_url: ""

skill_profiles:
  low:
    max_cps: 9
    min_cps: 4
    max_rotation_speed: 220
    min_rotation_speed: 120
    max_accuracy: 0.52
    min_accuracy: 0.30
  medium:
    max_cps: 14
    min_cps: 9
    max_rotation_speed: 380
    min_rotation_speed: 220
    max_accuracy: 0.72
    min_accuracy: 0.52
  high:
    max_cps: 22
    min_cps: 14
    max_rotation_speed: 650
    min_rotation_speed: 380
    max_accuracy: 0.88
    min_accuracy: 0.72

Detection Modules

Movement: Fly, Speed, NoClip, Jesus, Blink
Block Interaction: FastBreak, FastPlace, Nuker, Scaffold
Combat: KillAura, AutoClicker, Reach
Other Checks: NoFall, Velocity, Criticals, Timer, Phase, Step
Inventory: Inventory Movement Detection

Previews

Ченджлог

1.5.9Релиз1.21.9, 1.21.10, 1.21.11 · 16 мая 2026 г.

New Double Check: flags are confirmed before any alert or punishment, so a one-off false flag never bans.
Fewer false positives after knockback, the movement checks no longer mistake getting hit for Fly or Speed
Players with /fly or creative flight are no longer false-flagged during flight transitions
Filtered-out flags no longer inflate the confidence of later ones
Fixed an offense being counted twice in the violation buffer
Dashboard now applies per-check toggles, severity, thresholds and actions that were silently ignored before
Added 9 missing checks to the panel
Fixed a rare error when a Speed potion ran out mid-check

1.5.7Релиз1.21.9, 1.21.10, 1.21.11 · 2 мая 2026 г.

Step check now honors the config threshold; step cheats actually reach the flag chain
Fly detection catches sustained vertical motion via pure-trajectory physics, not just per-tick deviation
Fly violations no longer mislabel as Speed when vertical motion is the anomaly
Speed check holds back during sustained airborne motion so Fly flags first
KillAura instant-CPS, impossible-CPS, and suprahuman-reaction paths now require multiple matching events, fewer false bans on skilled clickers
AutoClicker autocorrelation requires two consecutive detections; jitter ceiling raised to 18 CPS
New rotation-snap-attack detection catches killaura that snaps onto target right before attacking
New cross-metric correlation catches slow-mode killaura that trips multiple metrics under thresholds
Bot-pattern aim checks (GCD, smooth aim, no-acceleration) now require a corroborating anomaly signal, fewer false positives on skilled mouse users
Reach marginal hits require two in four seconds; knockback, damage and Punch grace widened; high-ping bonus extended above 250ms
ElytraFly config keys (max_speed, threshold, firework boost duration) now actually take effect

1.5.6Релиз1.21.9, 1.21.10, 1.21.11 · 26 апреля 2026 г.

Less false flags

Bouncing on slime/honey blocks
Sprinting up stairs and slabs
Speed/Jump Boost potions wearing off
Levitation, Slow Falling, and Riptide ending
Knockback no longer pads NoFall distance
Criticals with Feather Falling boots
Fly hover when stepping or jumping off blocks
NoClip violations no longer stick after one false trigger
Phase corner re-entry can't slip through silently

Catches more cheats

LiquidBounce fly/speed modules (Hypixel, Vulcan, Matrix, Verus, AirWalk)
FastBreak: catches cheats on the first block, no warm-up needed
FastBreak: also catches "just-faster-than-vanilla" mining over 7-9 blocks
Subtle timer abuse (1.02-1.04x)
AutoClicker bot patterns held over 30 seconds
AimAssist micro-corrections and snap aim
KillAura while mob farming, and single-axis-extreme angles
Boat Fly and Elytra hover tightened
FastPlace stricter at high ping
Anti-knockback (Velocity) stricter, including vertical
Sustained slow-drip Speed cheats (1.5%+ over the limit)
Movement physics deviations spotted faster
Lava walking with Fire Resistance
Combat aim prediction on predictable targets
Malformed packet attempts are tracked, not swallowed
NoClip stricter at high ping
Ground spoof on descending stairs no longer free

Setback

Faster reset (350ms)
On by default for Fly, Speed, Step, NoClip, Jesus, Phase, Spider, GroundSpoof, NoSlow, Strider, BoatFly, Strafe
Velocity and fall distance reset on teleport
Use ALL in setback.types to cover every violation

1.5.5Релиз1.21.9, 1.21.10, 1.21.11 · 25 апреля 2026 г.

Fixes

Fewer false flags on killaura rotation, protocol, groundspoof
Killaura rotation no longer flags PvE / mob combat

New

Setback action: tp flagged players to last legit spot
Custom command action: run any console cmd on flag, per confidence
op_detect_only: ops/bypass log but no punish
Horizontal-fly detector (off by default, still tuning)

Tweaks

Tighter killaura: rotation valve closed, cooldown gate dropped
More checks exempt bedrock, gliders, swimmers, post-teleport
Plugin updates auto-merge new config keys into your existing config.yml

1.5.4Релиз1.21.9, 1.21.10, 1.21.11 · 24 апреля 2026 г.

All detection checks now run on every player movement - cheats can no longer exploit skip windows between checks
Removed internal sampling that was skipping up to 80% of checks for players with no recent flags
Plugin uses all available server resources - no artificial caps on processing threads or database connections
Detection thresholds retuned across every check to keep false positives low at the faster check rate
Violations and punishments write to the database immediately (previously delayed up to 500ms)

1.5.3Релиз1.21.9, 1.21.10, 1.21.11 · 23 апреля 2026 г.

Smarter AI that learns from your Cheat and Legit labels to cut false bans
Servers stay linked even if you clear cookies, just sign in to keep them
Tap Cheat or Legit on any recent flag to train the AI
Bigger settings page with AI, replay, ping and per-check sliders
Dashboard syncs instantly after pairing instead of waiting

1.5.2Релиз1.21.9, 1.21.10, 1.21.11 · 21 апреля 2026 г.

AI assist, accounts, bigger dashboard

New AI layer on every flag, nudges confidence up or down from kNN and online logistic regression trained on your labels
New AI live feed, see each decision with verdict, neighbour dots, agreement bar, probability donut
New Learned weights panel, shows which features the AI trusts per check
New mass-FP detector, proposes suppression rules you approve with one click
New account system, one login for forums and the dashboard
New pairing flow, requires a free account so servers survive cookie clears
Already signed in? Pair auto-links to your account, nothing else to click
Existing browser-only servers auto-merge into your account the moment you sign in
Recovery codes issued at pair time as a backup
Flags now carry 30+ features, a replay window and a session summary
Settings page gained AI, FP filter, Replay, Ping compensation, Bedrock, per-check severity sliders
Hourly chart now shows am/pm at 6h intervals
Account reminder banner for browser-only paired servers
New config paths: ai.enabled, ai.max_adjustment, ai.min_agreement, ai.verdict_ttl_seconds, ai.send_features

1.5.1Релиз1.21.9, 1.21.10, 1.21.11 · 19 апреля 2026 г.

Language fixes, more elytra fixes, dashboard polish

New force_server_language option, makes everyone see the server's chosen language instead of their own client locale
GUI menus, item names and lores now actually translate
Replay viewer, staff alerts, web pair messages and join notices now translate too
Jesus, NoClip packet check and Protocol check stop firing during elytra flight
Firework rocket use is now tracked so every check sees the boost grace window
Run now button on the dashboard analytics page, triggers auto-tune against current FP history on demand