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PolyLib in FTB Skies 2

FTB Skies 2 1.24.0 ships version 2100.1.0-build.183 · First seen in 1.0.1

Checked Sep 20, 2026FTB Skies 2 1.24.0Sources: FTB Skies 2 1.24.0 modlist.json

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Also in 7 other packs →

PolyLib is a mod in FTB Skies 2 1.24.0, where it is version 2100.1.0-build.183. A Minecraft lib used for all of CreeperHosts mods (Summary from the mod's Modrinth page.)

PolyLib guide for FTB Skies 2

Written for FTB Skies 2 1.22.0 · also fits 1.0.1 to 1.24.0 · updated Oct 15, 2026

Last verified for FTB Skies 2 v1.24.0 on Oct 15, 2026 · text last changed Oct 15, 2026

Also applies to:All the Mods 10 2.43 to 8.3All the Mods 10: To the Sky 1.0 to 2.1.0All the Mons 0.3.0-beta to 1.3.0FTB Evolution 2 1.0.2 to 1.4.0FTB Skies 2: Aero 1.0.3 to 1.10.0FTB StoneBlock 4 1.1.1 to 1.23.0Project Infinity 0.1 0.0.45.4 to 0.0.51.4-hotfix-2

Sections
4

3 sections are written for this pack; 1 is shared from another pack's guide.

Every recipe and number here was checked against FTB Skies 2 1.24.0, read from the running game on Oct 13, 2026.

What is PolyLib?

Same as in the All the Mods 10 8.1 guide

PolyLib is included in this pack at version 2100.1.0, shipped as a NeoForge jar.[1]

It has been part of the pack since version 2.25 or earlier, so it is not a recent addition.[1]

How do you get started with PolyLib?

There is nothing to craft or unlock to get started with PolyLib. The only thing the pack gives us for this mod is a single setting, so your first step is simply knowing what it does.[2]

The setting is serverOnlySupport, and this pack has it set to false. When it is on, PolyLib can run as server side only support. When it is off, as it is here, non-vanilla clients without PolyLib may not be able to connect.[2]

Tip: If you host a server for friends, leave serverOnlySupport at the pack's value of false, and make sure everyone joins with the pack installed. That avoids the connection problem the setting describes for clients without PolyLib.[2]

Unverified No first items, recipes or in-game steps for PolyLib could be confirmed from the available sources, so none are listed here. This site does hold FTB Skies 2's own recipes, read from the pack itself: look the item up in the item browser.

How does PolyLib work?

1 part

There isn't much to dig into here. The only thing the sources document for PolyLib in this pack is a single config option. Nothing in them describes machines, multiblocks, power, fluid or item handling, or automation for this mod.[2]

Server-only support

The one setting is serverOnlySupport. In this pack it is set to false. When it is turned on, PolyLib can run as server-side-only support. With it off, as it is in this pack, non-vanilla clients that don't have PolyLib installed may not be able to connect.[2]

Tip: If you play on a server with this pack, install the full pack on your client rather than relying on a partial setup. With the option left at false, a non-vanilla client without PolyLib may be refused a connection.[2]

Unverified No sources describe any machines, multiblocks, power or fluid systems, or automation behaviour for PolyLib, so none are covered here.

Which PolyLib config options matter?

1 part

PolyLib is a library mod, and the pack's config for it is tiny. The file config/polylib.json has just one option, so there isn't much to tweak.[2]

serverOnlySupport

The pack sets serverOnlySupport to false. The option's own description says it allows PolyLib to run as server-side-only support. It also says that without it, non-vanilla clients that don't have PolyLib may not be able to connect.[2]

Tip: If you run a server for this pack, keep that description in mind. With the option at false, players should join with the pack installed rather than a partial set of mods, because clients without PolyLib may fail to connect.[2]

Unverified The sources don't say what PolyLib's default for serverOnlySupport is, so it's unconfirmed whether the pack changed this value from the mod default.

Sources

  1. All the Mods 10 8.1 mod list · pack file
  2. FTB Skies 2 1.22.0 config: config/polylib.json · pack file
Where this guide comes from

Written from what FTB Skies 2 itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.

Guide last verified Oct 15, 2026.

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Version in each release

44 releases, first in 1.0.1
FTB Skies 2VersionJarWhere it came from
1.24.0
Oct 12, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.23.0
Sep 24, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.22.0
Sep 3, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.21.1
Jul 29, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.20.1
Jul 29, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.20.0
Jul 27, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.19.0
Jul 24, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.18.2
Jun 21, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.18.1
Jun 16, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.18.0
May 31, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.17.0
May 27, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.16.0
May 13, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.15.0
May 1, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.14.3
Apr 1, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.14.2
Apr 1, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.14.1
Mar 27, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.14.0
Mar 21, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.13.4
Feb 27, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.13.3
Feb 19, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.13.2
Feb 17, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.13.1
Feb 13, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.13.0
Feb 12, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.12.0
Jan 6, 2026
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.11.0
Dec 10, 2025
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.10.2
Nov 24, 2025
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.10.1
Nov 20, 2025
2100.1.0-build.183polylib-2100.1.0-build.183-neoforge.jarFrom the published release
1.9.2
Oct 7, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.9.1
Sep 29, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.9.0
Sep 22, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.8.0
Aug 27, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.7.0
Aug 23, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.6.1
Aug 8, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.6.0
Aug 6, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.5.2
Jul 24, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.5.1
Jul 23, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.5.0
Jul 22, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.4.1
Jul 15, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.4.0
Jul 15, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.3.1
Jul 9, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.3.0
Jul 8, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.2.0
Jul 6, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.1.1
Jul 2, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.1.0
Jul 1, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release
1.0.1
Jul 1, 2025
2100.0.3-build.172polylib-2100.0.3-build.172-neoforge.jarFrom the published release

"From pack files" means the list came from the pack's own files; "from the published release" means ForgeBase read the jars of the release itself.

Items and blocks

We can't match this mod to the pack's item list: it registers as polylib, and the pack's recipe dump has nothing under that name. That means we found nothing, not that the mod adds nothing. Search the item browser

Config options (how FTB Skies 2 sets them)

1 settings this pack ships for the mod. We don't have the mod's own defaults to compare them against yet.

See all 1 settings →

Show settings
SettingFTB Skies 2 value
serverOnlySupport
Allows poly lib to run as a server side only support. Without this, non-vanilla clients without polylib may not be able to connect.
config/polylib.json
false

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