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OptCarpetAdditionMinecraft mod for 1.21.10

An extension mod of fabric-carpet.

server onlynewest supported 1.21.10UtilityGame MechanicsOptimizationManagement
Latest version
v2.0.0
Minecraft
1.17 to 1.21.10
Java
Java 21+
Loader
Fabric
Licence
CC0-1.0
Downloads
6.4k
Updated
8 mo ago
Available on
Modrinth
Space NodeOur hosting

Host OptCarpetAddition servers

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

  • 1.21.10
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.10Fabric21+declared7 Oct 2025
1.21.5Fabric21+declared25 Mar 2025
1.21Fabric21+declared13 Jun 2024
1.20.4Fabric17+declared7 Dec 2023
1.20.1Fabric17+declared12 Jun 2023
1.20Fabric17+declared2 Jun 2023
1.19.4Fabric17+declared14 Mar 2023
1.19.3Fabric17+declared7 Dec 2022
1.19.2Fabric17+declared5 Aug 2022
1.19.1Fabric17+declared27 Jul 2022
1.19Fabric17+declared7 Jun 2022
1.18.2Fabric17+declared28 Feb 2022
1.18.1Fabric17+declared10 Dec 2021
1.18Fabric17+declared30 Nov 2021
1.17.1Fabric16+declared6 Jul 2021
1.17Fabric16+declared8 Jun 2021

Download

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

v2.0.0release12 Feb 2026

opt-carpet-addition-v2.0.0+build.2602111923-1.21.10.jar · 71 KB · for 1.21.10

Download latest
d7ccebe7c119…
Older versions10
  • v1.9.016 Jul 20251.2166 KB35 downloads4c4c6bdcbca4…Get
  • v1.8.027 Jul 20241.20.471 KB80 downloads8a4f651d5436…Get
  • v1.7.12 Mar 20241.20.467 KB88 downloads088b504e1a8b…Get
  • v1.7.020 Feb 20241.20.166 KB52 downloadse77f718d1d1c…Get
  • v1.6.023 Aug 20231.20.154 KB108 downloads4a0d2390b5c8…Get
  • v1.5.016 Jul 20231.20.1, 1.2055 KB54 downloadsa319cb221417…Get
  • 1.5.0+beta.111 Jul 20231.20.156 KB42 downloads149da4ea54a5…Get
  • 1.4.029 Apr 20231.19.353 KB52 downloadsca6eb0d0fc10…Get
  • 1.3.17 Feb 20231.19.347 KB61 downloads566c9e337fd2…Get
  • 1.3.1-alpha.120 Jan 20231.19.3, 1.19.2, 1.19.1, 1.1939 KB83 downloads49310daac0db…Get

Frequently asked

Does OptCarpetAddition work on Minecraft 1.21.10?

Yes. 1.21.10 is the newest Minecraft version OptCarpetAddition 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 OptCarpetAddition support?

Everything the author has declared, from 1.17 up to 1.21.10. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install OptCarpetAddition on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does OptCarpetAddition support?

Fabric. 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 OptCarpetAddition?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is OptCarpetAddition under?

CC0-1.0, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install OptCarpetAddition?

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 OptCarpetAddition safely?

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

Works on the same versions

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

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Details from Modrinth, where the author last updated it on 12 Feb 2026. 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? .