Anti Chunkbans
by Quackerx
Anti Chunkbans is a Fabric client-side mod that guards against oversized NBT data sent by some servers, which can cause chunk bans, lag and disconnects.
What it does
Some servers let players carry items with extremely large amounts of NBT data. Such items can make a chunk unloadable, leave the client unstable and drop the connection. The mod limits how these payloads are handled, so a player entering a restricted chunk stays connected and the game remains playable.
Key features
Chunk ban protection
Prevents the client from being kicked when entering a chunk that holds oversized item data.
Denial-of-service filter
Blocks certain NBT-based payloads, such as book bans, that would otherwise overload the client.
Lightweight design
Runs only on the client and adds little processing, so it does not change server behavior.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Anti Chunkbans need Fabric API?
Does the server need Anti Chunkbans installed?
What the author says
A lightweight client-side mod that prevents certain forms of NBT-based denial-of-service attacks, such as book bans / chunk bans, from making the game unplayable. Also it lets you create different kinds of books like the booktrolling mod. The mod safely handles oversized NBT data that would normally cause…
Official listing
- Modrinth page
- modrinth.com/mod/anti-chunkbans
- Owner
- Quackerx
- Published
- 2026-05-16
- Updated on Modrinth
- 2026-10-15
- Facts verified
- 2026-10-15