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RainAPIMinecraft mod

Core library for RainJava featuring embedded ECJ compiler, Javassist bytecode tools, and ASM transformation pipeline. Enables dynamic Java compilation and class modification at runtime.

client and server
Latest version
1.0.2
Minecraft
no version declared
Java
follows the game
Loaders
none declared
Licence
MIT
Downloads
296
Updated
8 mo ago
Available on
Modrinth
Space NodeOur hosting

Host RainAPI servers

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

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

Download

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

Most recently published release

1.0.2release27 Feb 2026

RainAPI-1.0.2.jar · 7.2 MB · for 1.20.1 · Forge

Download this release
ba553a60eee8…
Older versions2
  • 1.0.127 Feb 20261.20.17.2 MB46 downloadsf0e867c9abd2…Get
  • 1.0.020 Feb 20261.20.17.1 MB23 downloadsa8c238172cd9…Get

Frequently asked

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

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

What licence is RainAPI 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 RainAPI?

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 RainAPI 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.

Which Minecraft versions does RainAPI work on?

The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Minecraft.

Details from Modrinth, where the author last updated it on 27 Feb 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Not indexed yet. Score 43 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .