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Command Debug ServiceMinecraft mod for 1.21.5

This is a mod that provides a method to execute and debug Minecraft commands by external programs. It is used to be a command debug connect kit between Minecraft and external programs.

server onlynewest supported 1.21.5UtilityManagement
Latest version
4.1.1
Minecraft
1.19.4 to 1.21.5
Java
Java 21+
Loaders
Quilt, Fabric
Licence
MIT
Downloads
2.5k
Updated
16 mo ago
Available on
Modrinth
Space NodePartner

Host Command Debug Service servers

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

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

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Command Debug Service declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.5Quilt, Fabric21+declared25 Mar 2025
1.21.4Quilt, Fabric21+declared3 Dec 2024
1.21Fabric, Quilt21+declared13 Jun 2024
1.20.6Quilt, Fabric21+declared29 Apr 2024
1.20.5Fabric, Quilt21+declared23 Apr 2024
1.20.4Quilt, Fabric17+declared7 Dec 2023
1.20.2Fabric, Quilt17+declared20 Sept 2023
1.20.1Quilt, Fabric17+declared12 Jun 2023
1.20Quilt, Fabric17+declared2 Jun 2023
1.19.4Quilt, Fabric17+declared14 Mar 2023

Download

From Command Debug Service’s own host. Nothing is re-hosted here.

4.1.1release2 Apr 2025

cmdkit-4.1.1-1.21.5.jar · 0.0 MB · for 1.21.5

Download latest
8e10410c6eb0…
Older versions17
  • 4.1.023 Mar 20251.21.40.0 MB76 downloads871d31e792a1…Get
  • 4.0.117 Mar 20251.21.40.0 MB38 downloads50aac13e782c…Get
  • 4.0.016 Mar 20251.21.40.0 MB52 downloadsf596c0a8cb13…Get
  • 3.2.08 Mar 20251.21.40.0 MB43 downloads747c998c0274…Get
  • 3.1.223 Jun 20241.20.5, 1.20.6, 1.210.0 MB229 downloads8283df232289…Get
  • 3.1.121 Jun 20241.20.5, 1.20.6, 1.210.0 MB78 downloadsb7af27bc8816…Get
  • 3.1.020 Jun 20241.210.0 MB64 downloadsddb892b26b0a…Get
  • 3.0.520 Jun 20241.20.40.0 MB103 downloadsfa1cb73a9ec5…Get
  • 3.0.412 Dec 20231.20.40.0 MB163 downloads81062747d8cc…Get
  • 3.0.214 Nov 20231.19.4, 1.20, 1.20.1, 1.20.20.0 MB220 downloads8c123cd52f09…Get
  • 3.0.113 Nov 20231.200.0 MB86 downloads7f724b2e89c7…Get
  • 3.0.09 Nov 20231.20.20.0 MB93 downloadsb16551d9230a…Get
  • 3.0.0-rc.16 Nov 20231.20.20.0 MB91 downloads1589668d92df…Get
  • 2.0.324 Sept 20231.20.20.0 MB115 downloads559b8a270b65…Get
  • 2.0.224 Sept 20231.20.10.0 MB84 downloads665364e4d433…Get
  • 2.0.12 Sept 20231.20.10.0 MB102 downloads8bb2ab0e01e6…Get
  • 2.0.023 Aug 20231.20.10.0 MB84 downloads7bdd7e413c18…Get

Frequently asked

Does Command Debug Service work on Minecraft 1.21.5?

Yes. 1.21.5 is the newest Minecraft version Command Debug Service 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 Command Debug Service support?

Everything the author has declared, from 1.19.4 up to 1.21.5. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Command Debug Service on the client or the server?

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

Which loader does Command Debug Service need?

Quilt, Fabric. 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 Command Debug Service?

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.

What licence is Command Debug Service under?

MIT, 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 Command Debug Service?

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 Command Debug Service safely?

From the author's own page on Modrinth, 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.

Entity CullingUsing async path-tracing to hide Block-/Entities that are not visibleFerriteCoreMemory usage optimizationsImmediatelyFastSpeed up immediate mode rendering in MinecraftYetAnotherConfigLib (YACL)A builder-based configuration library for Minecraft!Xaero's MinimapDisplays a map of the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.[ETF] Entity Texture FeaturesEmissive, Random & Custom texture support for entities in resourcepacks just like Optifine but for Fabric

Last checked 8 d ago against Modrinth. 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? .