Anti-duperz

Anti-Dupe

Compatibility: Bukkit / Spigot / Paper / Purpur (1.21.11)

Key Features

Advanced Item Duplication Prevention (For un-stackable items)

- Uses a hybrid system of deterministic hashes and per-item unique IDs to safely detect duplicated items without false positives. Lineage-Aware Serialization (For stackable items)

- Players can now combine similar stackable items even when items carry different lineage / NBT data. - Lineage serial ranges are merged correctly - No data is lost -Inventory consolidation behaves like vanilla Minecraft

Inventory & Cross-Inventory Scanning

- Detects duplicate items within a player’s inventory and across all online players. - Keeps legitimate copies and removes only excess items. Custom Item Rules (Name-Based)

- Track custom items by display name, not NBT or material, preventing renamed items from bypassing detection.

Per-Item Hash Modes

- NAME – stackable items share a deterministic hash (ideal for currencies like Money Sachets) - UNIQUE – non-stackable or special items get a unique ID per item

Custom Stack Sizes (Per Item)

- Define allowed stack sizes for both vanilla and custom items via commands or config. Always-Scanned Custom Items

- Custom items are always checked, even when onlyscan mode or material exclusions are enabled. - Multi-Language Support

Added in game language support for the following.

``` de_DE en_US es_ES fr_CA fr_FR it_IT ja_JP pl_PL pt_BR ru_RU tr_TR uk_UA zh_CN ```

Safe Removal & Recovery System

- Excess duplicate items are backed up to recovery.yml instead of being deleted.

Multi-Language Discord Webhook Alerts (Embed Messages)

- Sends rich embed notifications in multiple languages to a Discord channel when a duplication is detected.

Admin Whitelist

- Exempt trusted players from all anti-dupe checks. OnlyScan Mode

- Scan only high-value items for performance, while still protecting all custom items. Automatic Ban Option

- Optionally bans players caught duplicating, with full logging. Hot Reload Support

- Reload custom item rules, stack sizes, hash modes, language files, and Discord config without restarting the server. Detailed Logging

- Duplication attempts logged in dupe_log.yml, bans recorded in bans.yml.