OutStacker — Ultimate Potion Stacking System
The most advanced potion stacking plugin for Minecraft. Zero configuration, zero commands, zero lag — just pure automatic stacking for all potions.
🧪 About OutStacker
OutStacker is the simplest potion stacking solution for Minecraft. No commands, no permissions, no nonsense — just install and forget.
Unlike other plugins that fight with vanilla inventory behavior, OutStacker uses native Paper API (setMaxStackSize()) to tell the game: "These potions can stack." The result? Perfect stacking that works exactly like vanilla items, with zero performance impact.
Perfect for survival servers, PvP arenas, factions, or any server where players need to carry lots of potions without inventory clutter.
✨ Why OutStacker?
🎯 The Problem
Other potion stacking plugins:
Scan inventory every tick (LAG)- Fight with vanilla click logic (BROKEN)
- Cause dupe exploits (UNSAFE)
- Require commands (ANNOYING)
✅ The Solution
OutStacker does it THE RIGHT WAY:
- ✓ Uses Paper's native
setMaxStackSize()API - ✓ Game handles ALL logic automatically
- ✓ Zero performance impact
- ✓ Impossible to dupe
- ✓ No commands needed
✨ Features
🧪 Core Features
| Feature | Description |
|---|---|
| Auto Stack | All potions automatically stack — no commands, no clicks, no nothing |
| Native API | Uses Paper's setMaxStackSize() — the ONLY correct way to stack items |
| All Potions | Regular potions, splash potions, lingering potions, tipped arrows |
| Persistent | Potions remember stack size after server restart |
| Universal | Works in all inventories — player, chests, hoppers, dispensers |
🛡️ Safety & Performance
| Feature | Description |
|---|---|
| No Dupes | Uses vanilla game logic — literally impossible to duplicate items |
| Zero Lag | No inventory scanning, no event spamming, no schedulers |
| Safe Transactions | Works with ALL click types — left, right, shift, drag, double |
| Lightweight | Single event listener, minimal code, maximum efficiency |
🎨 Simplicity
| Feature | Description |
|---|---|
| Plug & Play | Download → Restart → Done. That's literally it. |
| One-Line Config | Open config.yml, change ONE number, save, restart |
| bStats | Anonymous statistics to help improve the plugin (ID: 30274) |
| No Commands | Players don't need to learn ANYTHING |
📥 Installation Guide
| Step | Action |
|---|---|
 | Download — Get the latest .jar from Modrinth |
 | Install — Place the JAR into your server's plugins/ folder |
 | Restart — Restart your server (DO NOT use /reload) |
 | Done! — That's it. All potions now stack automatically |
⚠️ Important: Requires Paper 1.21.5 or higher with Java 21. Will NOT work on Spigot or older Paper versions. Full server restart required —
/reloadwill cause issues.
⚙️ Configuration
📁 config.yml — The ONLY file you'll ever need
# maximum stack size for ALL potions (1-127)
# change this number and restart the server
default-stack: 16
That's it. One line. Change the number, restart, done.
Want 32 potions per stack? Change to 32. Want 64? Change to 64. Want 100? Go wild (up to 127).
</details>
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