BeansAC

Checks run on the server and intercept incoming packets, such as container clicks, creative inventory slots, book editing and anvil renaming. Each check can be enabled or disabled on its own, given a maxVl threshold, and set to kick, ban or alert on a violation. Configuration is handled through a TOML file.

Most anticheats assume vanilla content and break on modded servers. BeansAC scans the Forge registries at startup, covering items, blocks, enchantments, mob effects and entities, then caches the results for later boots. Movement limits are calculated from the effects and enchantments a player has active, and unknown enchantments or effects receive permissive multipliers instead of being flagged. Detection thresholds adjust to each player's connection latency, and checks pause when server ticks run past 100 ms, so high-ping players and laggy servers are less likely to be punished. The mod prioritizes avoiding false positives over catching every violation.

Optional sandbox testing can start headless Forge instances to examine uncertain behavior against the actual mod code. The mod is published for Forge only, for the game versions 1.19.2 and 1.20.1, and it needs topeatLib. It runs on the server alone, so players join without installing it, and it is released under a custom license, not open source.