DuckyAntiCheat review

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

DuckyAntiCheat, also called DuckyAC, is a lightweight server-side anti-cheat plugin for Spigot and Paper Minecraft servers. It is aimed at solo, small, and mid-market server operators who want focused detection across movement, block placement, combat, inventory behavior, packet timing, Elytra activity, and NoSlowDown contexts. The plugin is open source under the GPL-3.0 license and provides configurable violation levels, thresholds, checks, punishments, permission-based bypasses, staff alerts, and console alerts. Its detection coverage includes air jumping, air placement, flying, invalid positions, reach, through-block attacks, auto-totem, auto-trap, Elytra aim, critical hits, timer anomalies, and abnormal packet rates.

The free open-source model keeps DuckyAntiCheat straightforward for operators who prefer to manage their own server software. Enforcement can cancel events, apply a setback or teleport, execute configurable server commands, and send staff or console alerts. Discord webhook logging adds a way to record violations and punishments outside the game. The configuration depth is useful for servers with distinct moderation policies, while permission-based bypasses provide a defined path for staff or selected players. Support is available through community and ticket channels, and the Bukkit services developer API allows developers to read and extend detection state.

Its ecosystem fit is concentrated rather than broad: the published integrations are PacketEvents, PlaceholderAPI, and Discord webhooks, with deployment limited to self-hosted servers. Compatibility information targets Java 21 and Spigot or Paper 1.20.6, so operators on other Minecraft versions should choose a plugin with verified support for their target version. DuckyAntiCheat is a strong fit for servers centered on 1.20.6 that need configurable server-side checks and open-source access. It is less suitable for teams requiring replay analysis, a wider verified version range, or a hosted deployment model.

DuckyAntiCheat pros and cons

• Where it wins
  • Focused movement, combat, inventory, packet, and NoSlowDown checks
  • Configurable violations, thresholds, bypasses, alerts, and punishments
  • Open source with Discord webhooks and a Bukkit developer API
• Where it doesn't
  • Verified compatibility targets Minecraft 1.20.6
  • Requires self-hosted Spigot or Paper server deployment
  • No replay analysis for reviewing suspected incidents

DuckyAntiCheat fact sheet, pricing and score →

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Last updated 7 Oct 2026 · How we research and update