CurseForge · Minecraft mod
Nuit Interop
Nuit Interoperability for OptiFine/MCPatcher and legacy FabricSkyBoxes sky formats
Quick answer
Which Nuit Interop release matches Quilt?
Nuit Interop FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21 targets 1.21, 1.21.1 with Fabric, Quilt. The project page does not say whether this file belongs on the client, dedicated server, or both. 1 required mod needs a matching file.
Where it goes
Is Nuit Interop required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Nuit Interop FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21 need?
FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21 on Quilt. Every mod below is checked against that same setup.
Install Nuit, Fabric API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Nuit Interop without breaking your instance.
Built for Nuit Interop FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21 on Quilt. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21. It targets 1.21, 1.21.1 with Fabric, Quilt; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Nuit, Fabric API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21. It opens that exact file at the source.
About this project
What does Nuit Interop add?
Nuit Interop
Formerly known as FabricSkyBoxes Interop
Nuit Interop adds compatibility for OptiFine/MCPatcher custom skies, allowing existing resource packs to work with Nuit, the modern multiloader successor to FabricSkyBoxes.
It converts supported OptiFine custom sky definitions to Nuit’s skybox format at runtime, making many existing sky resource packs work out of the box.
Features
OptiFine/MCPatcher Custom Sky Support
Converts supportedoptifine/skyresource-pack definitions into Nuit-compatible skyboxes.Smart Fallback
Skips conversion when native Nuit/FabricSkyBoxes-format skyboxes are already present.Flexible Control
Includes options for disabling native Nuit-format skyboxes when testing or preferring converted skies.Legacy FabricSkyBoxes Support
Planned support for loading legacy FabricSkyBoxes-format packs directly.
Requirements
Notes
Conversion is best-effort. Some packs may not render pixel-perfectly because OptiFine/MCPatcher and Nuit handle sky rendering differently.
Support
If you find this project useful, consider supporting development:
Project description from CurseForge.
Pick your setup
Nuit Interop by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.3
2 loader builds26.2
2 loader builds26.1.2
2 loader builds26.1.1
2 loader builds26.1
2 loader builds1.21.11
2 loader builds1.21.4
3 loader builds1.21.1
3 loader builds1.21
2 loader builds1.20.6
1 loader build1.20.5
1 loader build1.20.4
1 loader buildShowing the newest 12 of 22 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Nuit Interop versions and loaders
[Fabric] Nuit Interop 1.0.0-beta.1 for Minecraft 1.21.4
nuit-interop-fabric-1.0.0-beta.1+mc1.21.4.jar
26 Jun 2025
FabricSkyBoxes Interop 1.4.0 for Minecraft 1.21
fsb-interop-1.4.0+mc1.21-build.54.jar
13 Jun 2024
Looking for an older file? The official CurseForge project page is in Resources.
