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mod

Caelus APIMinecraft mod for 1.21.5

A coremod and API to provide developers access to elytra flight mechanics through an entity attribute.

newest supported release 1.21.5Library Api
Latest version
caelus-neoforge-8.0.1+1.21.4.jar
Loaders
NeoForge, Forge
Licence
not stated
Downloads
170.6M
Updated
15 mo ago
Available on
CurseForge

Minecraft versions

Every version Caelus API declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.5NeoForge, Forge21+declared25 Mar 2025
1.21.4NeoForge, Forge21+declared3 Dec 2024
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.6NeoForge, Forge21+declared29 Apr 2024
1.20.4NeoForge, Forge17+declared7 Dec 2023
1.20.2NeoForge, Forge17+declared20 Sept 2023
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.20Forge, NeoForge17+declared2 Jun 2023
1.19.4Forge, NeoForge17+declared14 Mar 2023
1.19.3NeoForge, Forge17+declared7 Dec 2022
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.19.1Forge, NeoForge17+declared27 Jul 2022
1.19Forge, NeoForge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.18.1NeoForge, Forge17+declared10 Dec 2021
1.18NeoForge, Forge17+declared30 Nov 2021
1.17.1NeoForge, Forge16+declared6 Jul 2021
1.16.5NeoForge, Forge8+declared14 Jan 2021
1.16.4NeoForge, Forge8+declared29 Oct 2020
1.16.3NeoForge, Forge8+declared10 Sept 2020
1.16.2Forge, NeoForge8+declared11 Aug 2020
1.16.1NeoForge, Forge8+declared24 Jun 2020
1.15.2Forge, NeoForge8+declared17 Jan 2020
1.14.4NeoForge, Forge8+declared19 Jul 2019
1.14.3NeoForge, Forge8+declared24 Jun 2019
1.13.2NeoForge, Forge8+declared22 Oct 2018

Download

From Caelus API’s own host. Nothing is re-hosted here.

Browse 40 indexed releases

Most recently published release

caelus-neoforge-8.0.1+1.21.4.jarrelease23 Jul 2025

caelus-neoforge-8.0.1+1.21.4.jar · 40 KB · for 1.21.5, 1.21.4 · NeoForge

Download this release
763491de0815…
Older versions24
  • caelus-neoforge-8.0.0+1.21.4.jar21 Jun 20251.21.5, 1.21.440 KB177 downloads1ad8d68222b8…Get
  • caelus-neoforge-7.0.1+1.21.1.jar5 Sept 20241.21.1, 1.2149 KB5.9M downloadse4c2e1af4e30…Get
  • caelus-forge-7.0.1+1.21.1.jar5 Sept 20241.21.1, 1.2149 KB37.5k downloadsbe4e4fb44070…Get
  • caelus-neoforge-7.0.0+1.21.jar19 Jun 20241.2149 KB272.6k downloadsfd3785dcaab5…Get
  • caelus-forge-7.0.0+1.21.jar19 Jun 20241.2149 KB18.4k downloads76e37701df73…Get
  • caelus-neoforge-6.0.0+1.20.6.jar7 May 20241.20.648 KB7.1k downloads1fcba57de7fd…Get
  • caelus-forge-6.0.0+1.20.6.jar7 May 20241.20.648 KB29.2k downloads047c78c96c48…Get
  • caelus-neoforge-5.1.0+1.20.4.jar22 Apr 20241.20.450 KB7.9k downloads48c55faebfef…Get
  • caelus-forge-5.1.0+1.20.4.jar22 Apr 20241.20.450 KB37.4k downloadsb78527671a17…Get
  • caelus-forge-3.2.0+1.20.1.jar22 Apr 20241.20.1, 1.2039 KB20.8M downloadsfa834f140bf7…Choose file on publisher ↗
  • caelus-neoforge-5.0.1+1.20.4.jar5 Mar 20241.20.448 KB4.5k downloads910378196167…Get
  • caelus-forge-5.0.1+1.20.4.jar5 Mar 20241.20.448 KB9.9k downloads6777715d985a…Get
  • caelus-neoforge-5.0.0+1.20.4.jar19 Dec 20231.20.447 KB7.5k downloadsdc88e0c3a14f…Get
  • caelus-forge-5.0.0+1.20.4.jar19 Dec 20231.20.448 KB11.2k downloads9c922c7d4d68…Get
  • caelus-forge-4.0.0+1.20.2.jar20 Oct 20231.20.237 KB25.4k downloads52663765e0ea…Get
  • caelus-forge-3.1.0+1.20.jar12 Jun 20231.20.1, 1.2037 KB9.9M downloads5f74c3506180…Choose file on publisher ↗
  • caelus-forge-1.19.4-3.0.0.10.jar17 Mar 20231.19.4, 1.19.337 KB176.4k downloads198e9c863ab1…Get
  • caelus-forge-1.19.3-3.0.0.9.jar17 Mar 20231.19.337 KB3.8k downloads343915a2430f…Get
  • caelus-forge-1.19.3-3.0.0.8.jar17 Mar 20231.19.337 KB366 downloads326cba0c6e90…Get
  • caelus-forge-1.19.3-3.0.0.7.jar9 Dec 20221.19.337 KB37.5k downloads44ea21ddc326…Get
  • caelus-forge-1.19.2-3.0.0.6.jar11 Aug 20221.19.2, 1.19.1, 1.1936 KB17.5M downloadsbd9d920381a8…Get
  • caelus-forge-1.19.2-3.0.0.5.jar10 Aug 20221.19.2, 1.19.1, 1.1936 KB9.1k downloadsd0a6d6e5a521…Get
  • caelus-forge-1.19.1-3.0.0.4.jar30 Jul 20221.19.1, 1.1936 KB21.3k downloads09c09dc6045d…Get
  • caelus-forge-1.19-3.0.0.3.jar8 Jun 20221.1936 KB72.9k downloads46afde8ba13a…Get

Frequently asked

Does Caelus API work on Minecraft 1.21.5?

Yes. 1.21.5 is the newest Minecraft version Caelus API declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Caelus API support?

Everything the author has declared, from 1.13.2 up to 1.21.5. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Caelus API support?

NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Caelus API?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Caelus API?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Caelus API safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Details from CurseForge, where the author last updated it on 23 Jul 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .