EntityGuard
EntityGuard is a lightweight Paper plugin that prevents lag and server crashes caused by excessive boats and minecarts. It enforces configurable per-chunk limits, detects vehicle abuse patterns, monitors server performance, and provides admin tools to identify problematic areas before they impact gameplay.

Features:

• Per-chunk boat and minecart limits
  
  
• Smart or always-on enforcement modes
  
  
• TPS/MSPT performance monitoring
  
  
• Vehicle loop/lag machine detection
  
  
• Admin scan and inspection commands
  
  
• Update checker
  
  
• bStats integration
  
  
• Supports Minecraft 1.20.x–1.21.x
  
  
• Requires Paper and Java 21+
  

Designed to keep servers stable without affecting normal gameplay.