Mod Caelus API

Caelus API, Elytra Flight for Minecraft Mods

Caelus API is a lightweight utility mod and developer library for Minecraft Java Edition. It replaces the game’s fixed Elytra logic with a reusable flight attribute on entities, giving other mods a clean way to enable or modify gliding. The attribute normally blocks Elytra flight at zero and enables it at one or higher, while the vanilla Elytra keeps its familiar behavior. Available for Forge and NeoForge across supported Minecraft versions, Caelus is primarily a technical dependency rather than a content expansion.

For a modded Minecraft server, our team at BoxToPlay recommends it when another mod requires a shared foundation for custom wings, abilities, or aerial movement.