GolfIV: The Anti-Exploit Mod That Keeps Minecraft Servers Fair
Running a Minecraft server means dealing with players who test every boundary the game allows. Some of them use hacked clients, some exploit packet quirks, and others simply find creative ways to duplicate items or see through walls. GolfIV exists to close those gaps. It is a Fabric-based anti-exploit mod that patches a long list of common abuses, all while staying lightweight and configurable. If you manage a survival or PvP server, this is one of those quiet tools that saves you hours of moderation headaches.
What GolfIV Actually Does
GolfIV is not a single fix; it is a collection of patches grouped into categories like inventory, packets, movement, duplication, and combat. Every patch can be toggled on or off through the config file at config/GolfIV_config.json, so you decide exactly how strict your server behaves. That flexibility is why so many admins keep it installed even after trying heavier anti-cheat plugins.
Inventory and Packet Patches
The inventory side handles a lot of small but annoying exploits. InventoryActions prevents players from hitting or chatting while a GUI is open. legaliseSurvivalItems strips incompatible enchantments and resets illegal stack sizes, while bannedSurvivalItems removes specific items the moment a player clicks them. removeCreativeNBTTags wipes all NBT data in creative mode but still allows block-picking, which keeps builders happy without opening a backdoor.
On the packet level, GolfIV trims data that hacked clients love to read. removeTeleportData deletes coordinates from player teleport packets, removeHealthTags hides entity health, and removeEquipmentTags blocks clients from seeing enchantments, stack sizes, or durability of opponents. patchSoundExploits fakes coordinates in sound events so lightning-based player finding stops working, and checkPortalHack catches players chatting or managing inventory while inside a portal. patchItemKickExploit prevents book-banning and other oversized-inventory kicks.
Movement, Duplication, and Combat
Movement exploits get their own attention. yesFall checks the player's real onGround status and ignores whatever the movement packet claims, which shuts down a classic fly and no-fall bypass. The duplication group is equally practical: patchSaveLimit ignores data above the Java DataOutput limit so saves do not throw exceptions, patchGravityBlock stops gravity block duplication, and patchDeathDuplication prevents players from duplicating their inventory by dying right after a disconnect.
Combat patches round things out. preventWallHit stops entities from being hit through walls, checkHitDistance rejects hits from unrealistic range, and checkHitAngle verifies the angle a player uses when attacking. Together these make kill aura and reach hacks far less effective.
Supported Versions and Loaders
GolfIV is built for Fabric, so you will need Fabric Loader and Fabric API installed on your server. It targets modern Minecraft releases, and because the project is actively maintained, checking the javadoc and release notes for the exact supported Minecraft versions is always wise before you update your server. Older snapshots may work, but the safest path is to match the mod version to your server's Minecraft version.
If you would rather skip manual file juggling, the foxygame.net launcher offers a one-click install that places GolfIV into your mods folder automatically, so you can get straight to configuring your server instead of hunting down dependencies.
How to Install GolfIV for Minecraft
Getting started is straightforward. Follow these steps:
- Install Fabric Loader on your Minecraft server or client.
- Download Fabric API and place it in the mods folder.
- Download GolfIV and drop the jar into the same mods folder.
- Start the server once so the config file generates.
- Open
config/GolfIV_config.jsonand toggle the patches you want. - Restart the server to apply your changes.
When you download GolfIV, keep in mind that every patch is optional. A creative-focused server might disable combat checks entirely, while a competitive PvP server will want all of them enabled. Testing one category at a time helps you spot anything that conflicts with your existing plugins.
Final Thoughts
GolfIV fills a specific niche: it is a focused anti-exploit mod rather than a full anti-cheat suite. It will not replace a comprehensive solution, but it covers the packet, duplication, and combat tricks that many servers overlook until they become a problem. With Fabric support, a clean config file, and patches you can switch on or off at will, GolfIV for Minecraft is a smart addition to any admin's toolkit. Set it up once, tune it to your community, and let it quietly keep your world fair.