
Caelus API
I don't know my version or loader
Caelus is a small utility mod that abstracts the hardcoded vanilla elytra behavior into a more generic elytra flight attribute and exposes this to mod developers seeking to implement elytra flight for their own mods.
All modders have to do is call CaelusApi.getInstance().getFallFlyingAttribute() wherever they want to apply a modifier to the flight attribute. The attribute has a default value of 0, which forbids any elytra flight. Attribute values greater than or equal to 1 will enable elytra flight. The vanilla elytra item has also been changed to use this attribute, keeping its behavior the same as normal.
For more information on how to interact with the attribute, see the Minecraft wiki.
Adding to Your Project:
Add the following to your build.gradle file:
repositories {
maven {
name = 'C4's Maven'
url = "https://maven.theillusivec4.top/"
}
}
Forge
dependencies {
runtimeOnly "com.illusivesoulworks.caelus:caelus-forge:${version}"
compileOnly "com.illusivesoulworks.caelus:caelus-forge:${version}:api"
}
NeoForge
dependencies {
runtimeOnly "com.illusivesoulworks.caelus:caelus-neoforge:${version}"
compileOnly "com.illusivesoulworks.caelus:caelus-neoforge:${version}:api"
}
Replace ${version} with the version of Caelus that you want to use.
Support
Please report all bugs, issues, and feature requests to the issue tracker.
For non-technical support and questions, join the developer's Discord.
License
All source code and assets are licensed under LGPL-3.0-or-later.
Donations
Donations to the developer can be sent through Ko-fi.
Affiliates
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.21.5
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as caelus-neoforge-8.0.1+1.21.4.jar — drop this file into the mods folder
- Download size: 40 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.
