Item Duplication Detection
[ For PaperMC 1.21.10 ]

Open Source!

Features

• Automatic Duplicate Detection: Tracks all non-stackable items with unique IDs
• ️ Database Persistence: Supports ONLY PostgreSQL databases (for size and speed reasons)
• ⚡ Real-time Monitoring: Comprehensive event tracking across inventories, containers, and player interactions
• ️ Auto-Removal: Optional automatic removal of duplicated items
• Discord Webhook Alerts (optional): Send duplicate alerts to your Discord server
• Creative Mode Support: Configurable handling of Creative mode duplication
• Advanced Tracking: Deep scanning of Shulker Boxes and Bundles
• Highly Configurable: Fine-tune detection sensitivity and behavior

Configuration (required!)

1. After first start, edit the generated plugins/DupeTrace/config.yml
2. Add your PostgreSQL details
3. Restart the server

Commands
command description
/dupetest give Give yourself a Diamond Sword tagged with a unique ID
/dupetest uuid <uuid> View item's recent transfer history (latest 10 entries)
/dupetest history <uuid> [limit] View full transfer log (default limit: 50)
/dupetest stats View plugin and database statistics
/dupetest search <player> List tracked items associated with a player
Command aliases: /dt & /dtrace


Large Servers
(Recommended for 100+ players)

scan-interval: 300 # Increase to 15 seconds
inventory-open-scan-enabled: false # Disable for max performance
database:
postgres:
pool-size: 20 # Increase pool size
known-items-ttl-ms: 300000 # Reduce to 5 minutes


Permissions
permissions description default
dupetrace.admin Allows access to DupeTrace admin commands op
dupetrace.alerts Receive duplicate alerts from DupeTrace op

Dependencies
A (remote) PostgreSQL Database is required


Dependencies (included)

• kotlin-stdlib-jdk8 - Kotlin standard library
• HikariCP 5.1.0 - Database connection pooling
• PostgreSQL 42.7.4 - PostgreSQL JDBC driver
• adventure MiniMessage 4.25.0 - Minecraft Java UI Library

In Active and Continues development.