ModsFinder

TrueUUID

by YuWan030

TrueUUID lets premium Minecraft players join offline-mode servers while keeping their real UUID and skin, and it verifies accounts without exposing their access tokens.

FabricForgeNeoForgeClient and serverGNU Lesser General Public License v3.0 onlyOpen source1.20.1 – 1.21.11

What it does

Servers that run in offline mode normally let anyone join under any name. Servers that run in offline mode gain an account check from TrueUUID, which lets a premium player confirm ownership through a Mojang session while the server gets just the login proof required to confirm the UUID and skin. The access token stays on the player's own computer.

Players whose accounts verify keep their UUID, username casing and signed skin properties, and a green verified marker appears on the HUD. Offline players still join normally. Names that belong to premium accounts can be blocked from offline reuse, and once a verified login completes, the name cannot fall back to offline mode. Both the server and every player need the same TrueUUID JAR, built for the exact Minecraft version and loader.

The mod is open source under the GNU Lesser General Public License v3.0 only and is published for Fabric, Forge and NeoForge, with Paper and Spigot also listed as server platforms. Files cover 1.20.1 – 1.21.11, and the latest builds, 1.3.0, are dated 2026-09-13. Setup involves setting the server to offline mode, starting it once to generate the configuration, and placing the matching JAR in the mods folder of the server and each client. Fabric and Forge/NeoForge use different builds, and the TOML and JSON settings differ by loader.

Key features

  1. Verified premium logins

    Premium players keep their real Minecraft UUID and skin on an offline-mode server.

  2. Offline players still allowed

    Players without a verified account can still join, and unknown names can be left to offline fallback.

  3. Verified HUD marker

    A green verified indicator on the HUD shows that a login completed through the check.

  4. Admin commands and migration

    Commands and an offline-to-verified data migration help server owners move existing player data.

Compatibility

Latest build for each game version and loader.

1.21.x12 of 12 versions with builds
1.21.111.3.0+fabric-1.21.111.3.0+forge-1.21.111.3.0+neoforge-1.21.11
1.21.101.3.0+fabric-1.21.101.3.0+forge-1.21.101.3.0+neoforge-1.21.10
1.21.91.3.0+fabric-1.21.91.3.0+forge-1.21.91.3.0+neoforge-1.21.9
1.21.81.3.0+fabric-1.21.81.3.0+forge-1.21.81.3.0+neoforge-1.21.8
1.21.71.3.0+fabric-1.21.71.3.0+forge-1.21.71.3.0+neoforge-1.21.7
1.21.61.3.0+fabric-1.21.61.3.0+forge-1.21.61.3.0+neoforge-1.21.6
1.21.51.3.0+fabric-1.21.51.3.0+forge-1.21.51.3.0+neoforge-1.21.5
1.21.41.3.0+fabric-1.21.41.3.0+forge-1.21.41.3.0+neoforge-1.21.4
1.21.31.3.0+fabric-1.21.31.3.0+forge-1.21.31.3.0+neoforge-1.21.3
1.21.21.3.0+fabric-1.21.2Not available1.3.0+neoforge-1.21.2
1.21.11.3.0+fabric-1.21.11.3.0+forge-1.21.11.3.0+neoforge-1.21.1
1.211.3.0+fabric-1.211.3.0+forge-1.211.3.0+neoforge-1.21
1.20.x6 of 6 versions with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Required by 1 mod

OfflineAuth1.20.1 – 1.20.6

How it compares

Full comparison

OfflineCommands is server-side only, under the MIT License, and runs on Fabric and Quilt for 1.20.1 – 26.3. Offline Players is open source under the GNU Lesser General Public License v3.0 or later, is Fabric only, and covers 1.20.1 – 1.21.1. Allow Offline Lan Join works on Fabric, Forge and NeoForge for 1.8.9 – 26.1.2, is client and server, and is not open source.

ModLoadersGame versionsEnvironmentUpdated
TrueUUIDFabric, Forge and NeoForge1.20.1 – 1.21.11Client and server2026-09-13
OfflineCommandsFabric and Quilt1.20.1 – 26.3Server-side only2026-09-24
Offline PlayersFabric1.20.1 – 1.21.1Server required, client optional2025-07-16
Allow Offline Lan JoinFabric, Forge and NeoForge1.8.9 – 26.1.2Client and server2026-05-03

Questions

Does TrueUUID have to be installed on the client?

Yes. Both the server and every player's client have to run the identical TrueUUID JAR, since the mod is used on each side.

Which build should a server use with Fabric or Forge?

Fabric uses the remapped JAR from build/libs, and Forge or NeoForge uses its own loader JAR. Each JAR must match the exact Minecraft version and loader.

Can a server run without TrueUUID in offline mode?

Yes, offline mode works without it, but TrueUUID adds the account check and verified UUID and skin handling that plain offline mode lacks.

In the catalog

TrueUUID is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Library mods3,514Fabric modsMods for 1.21.1119,862

More from YuWan030

All projects
ClearDrops1.20 – 1.20.4Banitems1.20 – 1.20.6SafeFarmland1.20.1 – 1.20.5OfflineAuth1.20.1 – 1.20.6CraftAudit1.20.1 – 1.20.5SimpleLocks1.20.1 – 1.20.6

Similar mods

Fabric API1.14 – 26.3Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3

What the author says

TrueUUID adds account verification to modded Minecraft servers that run in offline mode. A premium player's access token stays on their own computer; the server receives only the login proof needed to verify their UUID and skin. The same TrueUUID JAR must be installed on the client and server. Always choose the JAR…
YuWan030, on the Modrinth page

Official listing

Owner
YuWan030
Published
2025-09-07
Updated on Modrinth
2026-09-13
Facts verified
2026-10-15

Tags

LibraryManagementUtilityGame mechanicsSocial
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