mod
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.
- 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
- 18 mo ago
- Available on
- Modrinth
Our hostingHost 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
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.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.5 | Quilt, Fabric | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Quilt, Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21 | Fabric, Quilt | 21+ | declared | 13 Jun 2024 |
| 1.20.6 | Quilt, Fabric | 21+ | declared | 29 Apr 2024 |
| 1.20.5 | Fabric, Quilt | 21+ | declared | 23 Apr 2024 |
| 1.20.4 | Quilt, Fabric | 17+ | declared | 7 Dec 2023 |
| 1.20.2 | Fabric, Quilt | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Quilt, Fabric | 17+ | declared | 12 Jun 2023 |
| 1.20 | Quilt, Fabric | 17+ | declared | 2 Jun 2023 |
| 1.19.4 | Quilt, Fabric | 17+ | declared | 14 Mar 2023 |
Download
From Command Debug Service’s own host. Nothing is re-hosted here.
For Minecraft 1.21.5
Choose the loader you use before downloading.
- Choose file on publisher ↗
Fabric, Quilt
4.1.1 · 2 Apr 2025
Multiple loaders are listed; verify the file before downloading.
Most recently published release
cmdkit-4.1.1-1.21.5.jar · 31 KB · for 1.21.5 · Fabric, Quilt
8e10410c6eb0…Older versions17Hide older versions
- 4.1.023 Mar 20251.21.431 KB76 downloads
871d31e792a1…Choose file on publisher ↗ - 4.0.117 Mar 20251.21.430 KB38 downloads
50aac13e782c…Choose file on publisher ↗ - 4.0.016 Mar 20251.21.436 KB52 downloads
f596c0a8cb13…Choose file on publisher ↗ - 3.2.08 Mar 20251.21.426 KB43 downloads
747c998c0274…Choose file on publisher ↗ - 3.1.223 Jun 20241.21, 1.20.6, 1.20.526 KB229 downloads
8283df232289…Choose file on publisher ↗ - 3.1.121 Jun 20241.21, 1.20.6, 1.20.524 KB78 downloads
b7af27bc8816…Choose file on publisher ↗ - 3.1.020 Jun 20241.2123 KB64 downloads
ddb892b26b0a…Choose file on publisher ↗ - 3.0.520 Jun 20241.20.423 KB103 downloads
fa1cb73a9ec5…Choose file on publisher ↗ - 3.0.412 Dec 20231.20.423 KB163 downloads
81062747d8cc…Choose file on publisher ↗ - 3.0.214 Nov 20231.20.2, 1.20.1, 1.20, 1.19.425 KB220 downloads
8c123cd52f09…Choose file on publisher ↗ - 3.0.113 Nov 20231.2025 KB86 downloads
7f724b2e89c7…Choose file on publisher ↗ - 3.0.09 Nov 20231.20.225 KB93 downloads
b16551d9230a…Choose file on publisher ↗ - 3.0.0-rc.16 Nov 20231.20.220 KB91 downloads
1589668d92df…Choose file on publisher ↗ - 2.0.324 Sept 20231.20.219 KB115 downloads
559b8a270b65…Choose file on publisher ↗ - 2.0.224 Sept 20231.20.118 KB84 downloads
665364e4d433…Get - 2.0.12 Sept 20231.20.118 KB102 downloads
8bb2ab0e01e6…Get - 2.0.023 Aug 20231.20.119 KB84 downloads
7bdd7e413c18…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 platform or loader does Command Debug Service support?
Quilt, 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 Command Debug Service?
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.
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?
Start with the author's page on Modrinth, 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.
Is this information wrong or missing something? .