# Anti-Dupe<\/p>\n
**Compatibility:** Bukkit \/ Spigot \/ Paper \/ Purpur (1.21.11)
\n**Author:** CraniX@gmail.com
\n**Discord:** https:\/\/discord.com\/invite\/SfEHT6TEdm
\n**Ko-fi:** https:\/\/ko-fi.com\/cranix <\/p>\n
## Key Features<\/p>\n
**Advanced Item Duplication Prevention (For un-stackable items)**
\n– Uses a hybrid system of **deterministic hashes** and **per-item unique IDs** to safely detect duplicated items without false positives.<\/p>\n
**Lineage-Aware Serialization (For stackable items)**
\n– Players can now combine similar stackable items even when items carry different lineage \/ NBT data.
\n– Lineage serial ranges are merged correctly
\n– No data is lost
\n– Inventory consolidation behaves like vanilla Minecraft<\/p>\n
**Inventory & Cross-Inventory Scanning**
\n– Detects duplicate items within a player\u2019s inventory and across all online players. Keeps legitimate copies and removes only excess items.<\/p>\n
**Custom Item Rules (Name-Based)**
\n– Track custom items by **display name**, not NBT or material, preventing renamed items from bypassing detection.<\/p>\n
**Per-Item Hash Modes**
\n– `NAME` \u2013 stackable items share a deterministic hash (ideal for currencies like Money Sachets)
\n– `UNIQUE` \u2013 non-stackable or special items get a unique ID per item<\/p>\n
**Custom Stack Sizes (Per Item)**
\n– Define allowed stack sizes for both vanilla and custom items via commands or config.<\/p>\n
**Always-Scanned Custom Items**
\n– Custom items are always checked, even when `onlyscan` mode or material exclusions are enabled.<\/p>\n
**Multi-Language Support**
\n– Added in game language support for the following.
\n“`
\nde_DE
\nen_US
\nes_ES
\nfr_CA
\nfr_FR
\nit_IT
\nja_JP
\npl_PL
\npt_BR
\nru_RU
\ntr_TR
\nuk_UA
\nzh_CN
\n“`<\/p>\n
**Safe Removal & Recovery System**
\n– Excess duplicate items are backed up to `recovery.yml` instead of being deleted.<\/p>\n
**Multi-Language Discord Webhook Alerts (Embed Messages)**
\n– Sends rich embed notifications in multiple languages to a Discord channel when a duplication is detected.
\n )<\/p>\n
**Admin Whitelist**
\n– Exempt trusted players from all anti-dupe checks.<\/p>\n
**OnlyScan Mode**
\n– Scan only high-value items for performance, while still protecting all custom items.<\/p>\n
**Automatic Ban Option**
\n– Optionally bans players caught duplicating, with full logging.<\/p>\n
**Hot Reload Support**
\n– Reload custom item rules, stack sizes, hash modes, language files, and Discord config without restarting the server.<\/p>\n
**Detailed Logging**
\n– Duplication attempts logged in `dupe_log.yml`, bans recorded in `bans.yml`.<\/p>\n
## Support
\nFor bugs, suggestions, or questions, join us on Discord:
\nhttps:\/\/discord.com\/invite\/SfEHT6TEdm<\/p>\n","protected":false},"excerpt":{"rendered":"
A security tool for Minecraft servers, designed to prevent item duplication exploits.<\/p>\n","protected":false},"featured_media":15850,"template":"","meta":{"_minecraft_slug":"anti-dupe","_minecraft_project_id":"u5dKxq9Q","_minecraft_author":"CraniX","_minecraft_license":"LicenseRef-All-Rights-Reserved","_minecraft_downloads":19123,"_minecraft_follows":34,"_minecraft_client_side":"unsupported","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"anti-dupe.zip","_minecraft_size_bytes":169819136,"_minecraft_version_count":18,"_minecraft_updated_at":"2026-05-16T00:30:58.557197Z","_minecraft_date_created":"2023-10-04T03:14:39.363127Z","_minecraft_date_modified":"2026-02-03T02:39:24.354693Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/anti-dupe","_minecraft_icon_attachment_id":15850,"_minecraft_imported_at":"2026-05-31T18:39:30+00:00","_minecraft_import_hash":"93cd1a036305c73b7b008df0f5b2b57d","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[124,844,89,126,90,127,128,129,123,92],"mod_loader":[130,132,133,134],"minecraft_version":[62,37,40,41,73,74,38,78,79,80,81,82],"class_list":["post-15849","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-bukkit","mod_category-economy","mod_category-game-mechanics","mod_category-management","mod_category-optimization","mod_category-paper","mod_category-purpur","mod_category-spigot","mod_category-technology","mod_category-utility","mod_loader-bukkit","mod_loader-paper","mod_loader-purpur","mod_loader-spigot","minecraft_version-1-21","minecraft_version-1-21-1","minecraft_version-1-21-10","minecraft_version-1-21-11","minecraft_version-1-21-2","minecraft_version-1-21-3","minecraft_version-1-21-4","minecraft_version-1-21-5","minecraft_version-1-21-6","minecraft_version-1-21-7","minecraft_version-1-21-8","minecraft_version-1-21-9"],"yoast_head":"\n