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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 1.21.5Library Api
Latest version
caelus-neoforge-8.0.1+1.21.4.jar
Minecraft
1.13.2 to 1.21.5
Java
Java 21+
Loaders
NeoForge, Forge
Licence
not stated
Downloads
159.4M
Updated
14 mo ago
Available on
CurseForge
Space NodePartner

Host Caelus API servers

One click and Caelus API is installed with the right loader, on hardware built for it.

  • 1.21.5
  • NeoForge
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

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.

All 40 releases
caelus-neoforge-8.0.1+1.21.4.jarrelease23 Jul 2025

caelus-neoforge-8.0.1+1.21.4.jar · 0.0 MB · for 1.21.4, 1.21.5

Download latest
763491de0815…
Older versions24
  • caelus-neoforge-8.0.0+1.21.4.jar21 Jun 20251.21.4, 1.21.50.0 MB177 downloads1ad8d68222b8…Get
  • caelus-neoforge-7.0.1+1.21.1.jar5 Sept 20241.21, 1.21.10.0 MB5.9M downloadse4c2e1af4e30…Get
  • caelus-forge-7.0.1+1.21.1.jar5 Sept 20241.21, 1.21.10.0 MB37.5k downloadsbe4e4fb44070…Get
  • caelus-neoforge-7.0.0+1.21.jar19 Jun 20241.210.0 MB272.6k downloadsfd3785dcaab5…Get
  • caelus-forge-7.0.0+1.21.jar19 Jun 20241.210.0 MB18.4k downloads76e37701df73…Get
  • caelus-neoforge-6.0.0+1.20.6.jar7 May 20241.20.60.0 MB7.1k downloads1fcba57de7fd…Get
  • caelus-forge-6.0.0+1.20.6.jar7 May 20241.20.60.0 MB29.2k downloads047c78c96c48…Get
  • caelus-neoforge-5.1.0+1.20.4.jar22 Apr 20241.20.40.0 MB7.9k downloads48c55faebfef…Get
  • caelus-forge-5.1.0+1.20.4.jar22 Apr 20241.20.40.0 MB37.4k downloadsb78527671a17…Get
  • caelus-forge-3.2.0+1.20.1.jar22 Apr 20241.20, 1.20.10.0 MB20.8M downloadsfa834f140bf7…Get
  • caelus-neoforge-5.0.1+1.20.4.jar5 Mar 20241.20.40.0 MB4.5k downloads910378196167…Get
  • caelus-forge-5.0.1+1.20.4.jar5 Mar 20241.20.40.0 MB9.9k downloads6777715d985a…Get
  • caelus-neoforge-5.0.0+1.20.4.jar19 Dec 20231.20.40.0 MB7.5k downloadsdc88e0c3a14f…Get
  • caelus-forge-5.0.0+1.20.4.jar19 Dec 20231.20.40.0 MB11.2k downloads9c922c7d4d68…Get
  • caelus-forge-4.0.0+1.20.2.jar20 Oct 20231.20.20.0 MB25.4k downloads52663765e0ea…Get
  • caelus-forge-3.1.0+1.20.jar12 Jun 20231.20, 1.20.10.0 MB9.9M downloads5f74c3506180…Get
  • caelus-forge-1.19.4-3.0.0.10.jar17 Mar 20231.19.3, 1.19.40.0 MB176.4k downloads198e9c863ab1…Get
  • caelus-forge-1.19.3-3.0.0.9.jar17 Mar 20231.19.30.0 MB3.8k downloads343915a2430f…Get
  • caelus-forge-1.19.3-3.0.0.8.jar17 Mar 20231.19.30.0 MB366 downloads326cba0c6e90…Get
  • caelus-forge-1.19.3-3.0.0.7.jar9 Dec 20221.19.30.0 MB37.5k downloads44ea21ddc326…Get
  • caelus-forge-1.19.2-3.0.0.6.jar11 Aug 20221.19, 1.19.1, 1.19.20.0 MB17.5M downloadsbd9d920381a8…Get
  • caelus-forge-1.19.2-3.0.0.5.jar10 Aug 20221.19, 1.19.1, 1.19.20.0 MB9.1k downloadsd0a6d6e5a521…Get
  • caelus-forge-1.19.1-3.0.0.4.jar30 Jul 20221.19, 1.19.10.0 MB21.3k downloads09c09dc6045d…Get
  • caelus-forge-1.19-3.0.0.3.jar8 Jun 20221.190.0 MB72.9k 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 loader does Caelus API need?

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

Which Java version do I need for Caelus API?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

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?

From the author's own page on CurseForge, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

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

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Last checked 1 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .