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Agenta

A authserver and skin fix for legacy versions of minecraft.

FabricForgeQuiltBukkit
Loaders
FabricForgeQuiltBukkit
Downloads on Modrinth
7.9K
Followers on Modrinth
19
versions
5
Updated
March 29, 2026Mar 29
Published
in 2024
1.2.5 — What obscure version will you test it on? · swipe

At a glance

Runs on Fabric, Forge, Quilt and Bukkit
For Minecraft 1.0–1.7.10
Works on either side — install it in the game, on the server, or both
Latest version — 1.9.1 from March 29, 2026
License MIT — free
Where it's needed
In gameoptionalOn serveroptional

Works both in the game and on the server — install where you need it

Game versions1.0–1.7.10

Agenta

A authserver and skin fix for legacy versions of minecraft.

Compatibility

Requires Java 7. (In theory this can be built for Java 5, but I lack the build tools required for that.) If running this on Java 12 and newer, please add the following JVM argument: --add-exports java.base/sun.net.www.protocol.http=ALL-UNNAMED

  1. As a mod: The same Jar will run on forge, bukkit and Risugami's modloader for Minecaft versions Alpha 1.0.4 to Minecraft release 1.7.10 (These are merely the versions I tested)
  2. As a JavaAgent: Add the following JVM argument: -javaagent:{path}/agent.jar (replace path with the location of the agent.jar)
  3. Inline/static: In this setup, Agenta is essentially taking over the role of Launching minecraft. Add the following JVM argument and change out {mainClass} as needed depending on which minecraft version you are launching: -Dagenta.main.class={mainClass}
  4. As a Bukkit plugin (Tested with bukkit for Minecraft Beta 1.2_01)

JVM/Congig settings

Non of these are needed to launch Agenta. The available contexts are
"*" => ALL
"static" => When Agenta is launched as the main class with the expectation of chainloading another class manually.
"config" => Only appears in the config file.

ContextpropertyArgumentdescription
*agenta.assets.fml-Dagenta.assets.fml={value}A link to an archive Agenta should forward legacy forge download requests to
*agenta.assets.index-Dagenta.assets.index={value}The URL for the asset index Agenta should use as a base
*agenta.assets.routing-Dagenta.assets.routing=trueShould agenta reroute requests the mojang's asset servers? (default: "true")
*agenta.assets.url-Dagenta.assets.url={value}The URL for the resource server Agenta should pull assets from
*agenta.prt.color-Dagenta.prt.color=falsePass the value 'false' to disable colour printing.
*agenta.prt.debug-Dagenta.prt.debug=falseShould agenta show debug messages?
*agenta.save.file-Dagenta.save.file=saves.jsonWhen handling saving for certain versions of old Minecraft that relied on long dead mojang endpoints, what should agenta call the save file? (default: "saves.json")
*agenta.skin.resize-Dagenta.skin.resize=trueShould agenta try to resize skins from 64x64 to 64x32 for better compatibility? (default: "true")
*agenta.skin.merge-Dagenta.skin.merge=trueShould Agenta take multi layered skins and attempt to flatten the layers down? (default: "true")
*agenta.skin.cache-Dagenta.skin.cache=trueShould agenta cache skin lookups? (default: "true")
configagenta.config.versionThe version of agenta that generated a set config file. Will be used to detect if agenta should upgrade a set config file
staticagenta.main.class-Dagenta.main.class={value}The class Agenta should try to load next when running in static/inline mode

Fixes

  • Skin support for pre 1.7.10 versions
  • Cape support for pre 1.7.10 versions
  • Sound for versions of the game that predate 1.6
  • World savings for certain pre-alpha builds (experimental)
  • Forge 1.5.2 being unable to fetch it's library files (experimental)

Note

  • The same jar will work for almost every version of minecraft that predates Release 1.8
  • Any miscellaneous fabric based modloader should be supported.
  • NilLoader can load Agenta. (Agenta doesn't meet the criteria of a NilLoader mod)
  • Some ancient versions of Forge/modloader may require you to load Agenta as a jar mod.
  • LiteLoader inforces compatibility checks and so can never be fully supported

FAQ

How to install Agenta?

Install Fabric for your Minecraft version, download Agenta for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Agenta support?

Agenta has builds for Minecraft 1.0–1.7.10.

Is Agenta needed on the server?

Works on either side — install it in the game, on the server, or both

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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