Nylon
by Wesley1808
Nylon is a Fabric library for server-side content that uses Animated Java custom models and animations, without requiring any client mods.
What it does
Nylon acts as a bridge between models made with Animated Java and content that lives on the server, such as entities. Blocks written with Polymer can pair custom models, textures and animations exported from Blockbench with block and mob logic that is fully custom. Because the models are updated asynchronously and mounted as display entities, the animations stay smooth, and rotation can be interpolated through configuration instead.
The library supports most Animated Java features, including animation frame effects, conditionally applied effects on specific frames, bone blacklists, animation loop modes and loop start delays. Out of the box it also covers many vanilla mob features. Models and textures can be switched instantly, and listening for pose updates lets a mod react to a specific part of a model. Its authors describe its server impact as minimal, and it is open source under the GNU Lesser General Public License v3.0 only.
Key features
Server-side custom models
Models from Animated Java are rendered through entities on the server, so players do not need a client mod to see them.
Asynchronous model updates
Models are updated asynchronously, and rotation interpolation can be configured for smoother animation.
Instant model and texture swaps
A model or texture can be switched at runtime, and pose updates can be listened to for individual parts of a model.
Animation frame effects
Effects can be applied conditionally to specific animation frames, with options for bone blacklists, loop modes and loop start delays.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x10 of 10 versions with builds
1.20.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Mod developers who build server-side entities or blocks with animated models, and server owners who want those models without requiring players to install anything.
How it compares
Nylon is server-side only, open source under the GNU Lesser General Public License v3.0 only, and published for Fabric across 1.20.2 – 26.2. Better Player Model is open source under the MIT License and can run on either side, with 1.20.1 – 26.3 coverage, and it targets player models instead. PetSys is also server-side only and runs on Fabric for 1.20.6 – 26.2, but it is not open source and is licensed under the Apache License 2.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Nylon | Fabric | 1.20.2 – 26.2 | Server-side only | 2026-06-18 |
| Better Player Model | Fabric | 1.20.1 – 26.3 | Client or server, optional | 2026-10-10 |
| PetSys | Fabric | 1.20.6 – 26.2 | Server-side only | 2026-08-05 |
Questions
Does Nylon need to be installed on the client?
Which Minecraft versions does Nylon support?
Does Nylon work with other mods that use Animated Java?
In the catalog
Nylon is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 13,894 mods support Minecraft 26.2.
More from Wesley1808
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What the author says
It's a library for creating serverside content using custom models and animations, without requiring client mods.\ Nylon is a bridge between models created with Animated Java and serverside content (like entities and blocks) written using Polymer, allowing you to combine fancy custom models, textures and animations…
Official listing
- Modrinth page
- modrinth.com/mod/nylon
- Owner
- Wesley1808
- Published
- 2023-11-08
- Updated on Modrinth
- 2026-06-18
- Facts verified
- 2026-10-15