Caelus API Wiki

Caelus API Wiki & Guide

wiki.9minecraft.net/caelus-api/

Caelus API 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.

Guides

Step-by-step, in-game.

Fixing Elytra Flight That Stops Working After Installing Caelus APIIf your elytra suddenly refuses to deploy after adding Caelus API, the cause is almost always a conflict or a missing…How to Tell If Caelus API Is Actually Working in Your ModpackCaelus API is a library, not a content mod. It adds no items, no blocks, and no visible UI. That means you cannot…Understanding Why Caelus API Shows Up in Your Mod List at AllMany players install a modpack, see Caelus API in the mod list, and wonder what it does or whether they can remove…Using Caelus API to Make Custom Wings or Gliders Actually FlyIf you are playing a pack where a mod adds wings, a glider, or some other flight item, and that item does nothing…

Frequently asked questions

What does Caelus API actually do?

It turns vanilla's hardcoded elytra flight into a generic attribute called CaelusAPI.ELYTRA_FLIGHT that any mod can read or grant. The vanilla elytra itself now uses this attribute, so its behavior is unchanged.

How do I enable elytra flight on my own item?

Give the item or armor a modifier that adds points to the CaelusAPI.ELYTRA_FLIGHT attribute. Any value of 1 or higher enables flight, while the default of 0 keeps it disabled.

Why isn't my chestplate letting me fly after I added the attribute?

Check that the attribute value actually reaches 1 or more while the item is equipped, and that you're testing with the item worn rather than just in your inventory. If the value stays at 0, flight stays off.

Does Caelus API add any items or blocks of its own?

No, it's a utility/library mod with no content of its own. It only provides the flight attribute and rewires the vanilla elytra to use it.

See all 20 Caelus API questions ›

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Caelus API