Mod reference · Setup and operations

Chunky Extension Docs

Chunky Extension is a lightweight helper mod for Chunky that adds automation controls for pre-generation workflows on multiplayer servers.

What it does

  1. Adds server-side automation controls on top of Chunky.
  2. Provides /chunky-extend commands to enable, disable, and check automation status.
  3. When automation is enabled, resumes Chunky when the last player disconnects.
  4. Adds optional scheduled pause/continue rules with timezone support.
  5. Persists full settings and schedule rules in ce.json across restarts.

Quick start

  • Install Chunky first and verify /chunky commands are available.
  • Install Chunky Extended for your loader and game version.
  • Start server, run /chunky-extend enable, then run your normal Chunky generation command.
  • Optionally set schedule timezone with /chunky-extend settings timezone Europe/Amsterdam.
  • Use the quick nightly preset via /chunky-extend schedule preset nightly mon-fri.
  • Or use weekend defaults via /chunky-extend schedule preset weekend.
  • Add scheduler rules such as /chunky-extend schedule add 01:00 continue and /chunky-extend schedule add 07:00 pause mon-fri.
  • Or create both rules at once with /chunky-extend schedule preset window 01:00 07:00 mon-fri.
  • Run /chunky-extend schedule next to preview the next scheduled action.
  • Check for new releases with /chunky-extend update check.
  • Use /chunky-extend status anytime to confirm automation state.

Command reference

Use the Copy button to paste commands directly in-game or in your server console.

/chunky-extend

Shows command help in chat.

/chunky-extend enable

Enables automatic Chunky resume behavior when everyone leaves.

/chunky-extend disable

Disables automation and keeps Chunky behavior fully manual.

/chunky-extend status

Prints whether Chunky Extended automation is currently enabled or disabled.

/chunky-extend update check

Checks Modrinth for a newer Chunky Extended version.

/chunky-extend settings

Shows all current settings including scheduler flags and timezone.

/chunky-extend settings <autopause|autocontinue|scheduler|skip-online> <true|false>

Updates automation behavior toggles.

/chunky-extend settings timezone <ZoneId>

Sets scheduler timezone, e.g. Europe/Amsterdam or UTC.

/chunky-extend schedule add <HH:mm> <pause|continue> [days]

Adds schedule rules; days can be all, mon,wed,fri, or ranges like mon-fri.

/chunky-extend schedule list | remove <id> | clear | enable | disable

Manages stored scheduler rules and scheduler state.

/chunky-extend schedule next

Shows the next upcoming schedule trigger in your configured timezone.

/chunky-extend schedule preset window <start> <end> [days]

Adds a paired window: continue at start and pause at end (great for nightly jobs).

/chunky-extend schedule preset nightly [days]

Shortcut preset for 01:00 continue and 07:00 pause.

/chunky-extend schedule preset weekend [days]

Weekend-oriented preset (defaults to sat,sun) with 01:00 continue and 07:00 pause.

How to use it in practice

Treat Chunky generation like a scheduled operation: enable automation, run generation in stages, and watch server health while jobs run. This keeps world prep predictable and reduces player-facing performance spikes.

Depends on ChunkyAutomation toggle commandTimezone-aware schedulerBest with staged pregeneration

FAQ

Is Chunky required as well?

Yes. Chunky Extension builds on top of Chunky and is not a standalone replacement.

What Minecraft versions are supported?

This build targets the 26.1 line: 26.1, 26.1.1, and 26.1.2.

How should I run pregeneration on a live server?

Use smaller generation batches, monitor TPS/tick time, and schedule long runs during low player activity.

What extra settings are available?

You can toggle auto-pause on first join, auto-continue on last leave, scheduler on/off, and skip scheduled actions while players are online.

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