Auto Chunky
by tollg92
Auto Chunky is a server-side Fabric utility that pauses Chunky pre-generation when the server empties and resumes it once a player joins.
What it does
The mod watches the player count on the server. When the last player leaves, it pauses any running Chunky world pre-generation, then starts a two-minute timer. If someone logs in before the timer ends, generation continues without interruption, so pre-generation no longer has to be babysat by an admin.
Only the server needs the mod, and players join without installing anything. It requires Chunky, and the Fabric Loader at version 0.18.5 or higher. Files are published for Fabric only, for 11 release versions covering 1.21.1 – 1.21.11, with 0.1.0 for 1.21.11 as the latest file. The code is under the MIT License and is not open source.
Key features
Automatic pause on empty server
When no players remain online, the running Chunky task is paused right away without any command.
Two-minute grace timer
After the pause, a two-minute timer starts so brief disconnects do not stop the pre-generation.
Automatic resume on join
A player logging in during the timer resumes generation automatically, with no manual restart.
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Long pre-generation on a shared server
Admins can start a large Chunky task and leave it running, knowing it pauses while the server sits empty and continues when players return.
Who it’s for: Server owners who pre-generate worlds with Chunky and want to avoid server lag from generation running while nobody is online.
How it compares
Chunky Autopause is server-side only, open source under the MIT License, and published for Forge and NeoForge across 1.20.1 – 1.21. Chunky Pregenerator is open source under the MIT License, server required with client optional, and published for Fabric 1.21.11. Auto Chunky is server-side only and Fabric-only, with a two-minute timer and no client files, and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Auto Chunky | Fabric | 1.21.1 – 1.21.11 | Server-side only | 2026-03-26 |
| Chunky Autopause | Forge and NeoForge | 1.20.1 – 1.21 | Server-side only | 2024-06-17 |
| Chunky Pregenerator | Fabric | 1.21.11 | Server required, client optional | 2026-06-15 |
Questions
Does Auto Chunky need Chunky installed?
Do players need the mod to join the server?
Which Fabric Loader version is needed?
In the catalog
Auto Chunky is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
A lightweight, server-side utility mod that automatically pauses world pre-generation when players are online and resumes when they leave. Perfect for servers using the Chunky mod to pre-generate their worlds! You no longer have to worry about the server lagging when players join, or forgetting to resume Chunky when…
Official listing
- Modrinth page
- modrinth.com/mod/auto-chunky
- Owner
- tollg92
- Published
- 2026-03-26
- Updated on Modrinth
- 2026-03-26
- Facts verified
- 2026-10-15