SMPCORE is a Minecraft server plugin built for one purpose — keeping your SMP running smoothly without the headache of juggling a dozen separate tools. Designed for Paper/Spigot 1.21.10, it handles the stuff that quietly kills server performance before you even notice it's happening.

What It Actually Does
Keeps your server from choking Entities piling up in chunks, runaway redstone clocks, chunks staying loaded for no reason — SMPCORE deals with all of it automatically. It caps entities at 25 per chunk, stacks nearby ground items together, limits mob spawns in crowded areas, and watches your TPS in real time so it can step in before things get bad.

Manages your hardware intelligently If your server is running low on RAM or CPU headroom, SMPCORE notices and adjusts — cleaning up memory, scaling back task frequency, and even triggering an emergency mode when things get tight. Great if you're not running on beefy hardware.

Gives you actual access control You get a proper IP whitelist, bot detection with bypass support, and UUID-based player tracking. Whether you're running a tight private server or a bot-heavy automation setup, you can control who (and what) gets through.

Little quality-of-life things that matter One-player sleep so nobody has to wait around, configurable join/quit messages, ping tracking, and network-level optimizations that help with packet handling and entity tracking.

Who It's For

• SMP communities that want consistent performance without micromanaging
• Servers with bots — bot bypass is baked in, not bolted on
• Private servers that need real access control
• Budget hardware setups where automatic resource management genuinely helps
• Admins who'd rather have one well-built plugin than five mediocre ones

A Few Technical Notes
Built specifically for Paper 1.21.10, requires Java 17+. Most settings are hot-reloadable, meaning you can tweak things without bouncing the server. Configuration is extensive but not overwhelming — you can toggle individual features, adjust limits, customize messages, and set up bot detection patterns all from one config file.

Commands
Command What it does
/smp Main hub for all features
/ping Player ping and connection stats
/smp bypassip Manage IP whitelist
/smp togglejoin Show/hide join and quit messages
/smp optimize Trigger manual optimization
/smp resources Live resource monitoring
Version 1.0.0 · Made by Stupedo · Minecraft 1.21.10 · Java 17+