mod
JSCoreMinecraft mod for 1.21.10
Extend your game with JavaScript, create and publish commands, menus, toggles and much more!
- Latest version
- 0.2.0.17
- Minecraft
- 1.21 to 1.21.10
- Java
- Java 21+
- Loader
- Fabric
- Licence
- AGPL-3.0-or-later
- Downloads
- 1.4k
- Updated
- 11 mo ago
- Available on
- Modrinth
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version JSCore declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.10 | Fabric | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Fabric | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Fabric | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Fabric | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Fabric | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Fabric | 21+ | declared | 8 Aug 2024 |
| 1.21 | Fabric | 21+ | declared | 13 Jun 2024 |
Download
From JSCore’s own host. Nothing is re-hosted here.
Most recently published release
jscore-0.2.0.17.jar · 2.4 MB · for 1.21.10 · Fabric
6a147cd6e1ab…Older versions6Hide older versions
- 0.2.0.1616 Nov 20251.21.102.4 MB52 downloads
370174410538…Get - 0.2.0.1518 Jul 20251.21.82.4 MB11 downloads
b9b902c784d0…Get - 0.2.0.1418 Jul 20251.21.82.4 MB11 downloads
6091908e9d43…Get - 0.2.0.1314 Jul 20251.21.72.4 MB15 downloads
95fa92dd03f3…Get - 0.2.09 Jul 20251.21.52.4 MB19 downloads
0510ad5c3cc1…Get - 0.1.223 May 20251.21.51.4 MB42 downloads
df1811e6cbea…Get
Frequently asked
Does JSCore work on Minecraft 1.21.10?
Yes. 1.21.10 is the newest Minecraft version JSCore 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 JSCore support?
Everything the author has declared, from 1.21 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 JSCore on the client or the server?
The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.
Which platform or loader does JSCore 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 JSCore?
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 JSCore under?
AGPL-3.0-or-later, 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 JSCore?
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 JSCore 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? .