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    2,054,198 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,438 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    TrueUUID

    Mod

    Lets premium and offline players join the same server together.

    B80/ 100
    • OverviewB
    • SecurityPassed
    • PrivacySends data
    • AINone found
    • CompatibilityUp to 1.21.11
    • ModpacksIn 10
    • ReleasesLatest 13 Sep

    Download

    trueuuid-1.3.0-fabric-1.21.11.jar

    Released 13 Sep 2026 · 244.1 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 1.21.11 · Fabric (release 0.141.6)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker
    • Around for years

    Points lost

    • Many modpacks removed it−10 points
    • Releases replaced within 3 days to fix a problem−2 points
    • Releases in only 7 of the last 24 months−1 point
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      1 point lost26 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.6 weeks ago (13 Sep 2026) 12 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.21.11 on Forge, Fabric and NeoForge. 16% of the 516 popular Forge mods updated in the last 6 months also have files for 1.21.11. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 7 of the last 24 months 5 / 6

    • Stability

      12 points lost10 / 22
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.5 of the 10 modpacks with two or more versions removed it in a later one (50%) See the 5 modpacks0 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.3 of its 15 releases in 2 years needed a quick fix (20%) See the 3 releases5 / 7
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · YuWan-030/TrueUUID 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · YuWan-030/TrueUUID 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.78,985 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.14 months, 109 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 32 latest files for recent Minecraft versions. See Security
    Total80 / 100

    56.8 of the 71 points that apply = 80 out of 100. The points above are rounded to whole numbers.

    About

    TrueUUID lets premium and offline-mode players share an offline-mode Minecraft server while verifying premium accounts during login, so premium players retain their verified UUID, username casing, and signed skin properties. The client answers a one-time server challenge using its local session, and the server checks the proof with Mojang without receiving the player’s access token; configured, allowlisted Yggdrasil services can also be used on supported targets. Server policy controls whether players without a premium session may fall back to offline access, while protection for previously verified names can prevent offline reuse of those identities. A small account-status badge distinguishes verified premium logins from offline fallback, alongside localized login feedback. Administrators can back up and migrate same-name offline player data to a verified UUID after confirmation, and use commands to manage UUIDs; the server-side API also lets addons query account status, register login callbacks, and inspect verified names. The project is available as a mod for Forge, Fabric, and NeoForge, and as a server plugin for Spigot and Paper 1.20.1; the plugin supports matching TrueUUID clients as well as normal Mojang login for premium players without the mod.

    Written from Modrinth , CurseForge and the GitHub README . How we write it

    In-game changes

    Changes the game's code in 2 areas, as a library other mods build on: Networking and multiplayerChanges 6 game code files in this area: connections, the server list and what is sent between your game and a server. and User interfaceChanges 2 game code files in this area: menus, screens, tooltips, the chat window and the in-game overlay..

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Details

    Creators
    YuWan030, wish131400 and F1xGOD
    License
    GNU Lesser General Public License v3.0 only
    Downloads
    79K
    Created
    7 Sep 2025
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues
    Removed from CurseForge
    24 Sep 2026

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Uses your Minecraft account login
    It can use the login of your Minecraft account, for example to join a server. Only in its files for Fabric 1.20.1 to 1.21.11; NeoForge 1.20.1 to 1.21.11; Forge 1.20.1 to 1.21.11.Not a Warning: we read its code and found no login token sent anywhere but Mojang.
    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. It contacts 1 web address. See Privacy
    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them. Only in its files for Fabric 1.20.1 to 1.21.11; NeoForge 1.20.1 to 1.21.11; Forge 1.20.1 to 1.21.11.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · All 55 latest files checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      55 latest files: the newest file for each Minecraft version and loader. The answer above is about the 32 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.
      Nothing declared about your system outside the game.
    • Uses your Minecraft account login
      Uses your account login to join a server.
    • Looked for, not foundWe looked for these in the file and did not find them.
      Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    Sends your player ID, and uses your Minecraft login

    Sent to sessionserver.mojang.com.

    Only some of its files send your player ID.

    We found this in its code, read without running it.

    Its files for older Minecraft versions (1.20.5) also send your player name.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · All 32 files read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of all 32 files, for recent Minecraft versions. See each file in Releases
    • sessionserver.mojang.com
      Talks to the Minecraft login service.
      Login check with Mojang
    • Address built while the game runsThe code builds this address while the game runs: it is not written in the file.
      Purpose not known.
      Nothing about you
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its description, files and images and found none.

    We have not read its changelogs and code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 5 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      No AI content or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found in the description
      Changelogs not read yet
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      1 image read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      157 code files read

    Compatibility

    See all 109 files
    Fabric
    NeoForge
    Forge
    1.201.2126.126.3

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Needed in your game and on the server, or you cannot join.
    ServersThe server software its plugin build is made for.Also published as a plugin for Paper and Spigot.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.
    Fabric APIon FabricA
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 1.21.11. Many recently updated mods still support 1.21.11.

    Related projects

    Projects that need TrueUUID to work.

    ProjectTypeDownloadsGrade
    OfflineAuthDMod4.2K downloads

    Modpacks using this project

    Find modpacks with it

    Modpacks that include TrueUUID in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Create: Delight Remake138K downloadslast version with it 21 Sep 2026Create: SatisFactory3.5K downloadslast version with it 22 Aug 2026StokedHeat2.2K downloadslast version with it 14 Sep 2026WindCrest War SMP1.7K downloadslast version with it 27 Aug 2026Monsters&Machines1.5K downloadslast version with it 15 Sep 2026[FID]Fly In ur Dream1.1K downloadslast version with it 7 Aug 2026CUNICULUM1K downloadslast version with it 10 Jul 2026CozyGamers - SMP304 downloadslast version with it 2 Jul 2026ArchWar225 downloadslast version with it 16 Jul 2026World of Finalia - an RPG Adventure190 downloadslast version with it 11 Jul 2026

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.21.11·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.11.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.11.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.11.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.10.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.10.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.10.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.9.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.9.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.9.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.8·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.8.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 55123456

    109 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.6The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.6.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 254.3 KB
    1.20.2The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.20.2.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 242.1 KB
    1.20.1The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.20.1.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 289.5 KB
    1.20.3The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.20.3.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 242.1 KB
    1.20.4The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.20.4.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 235.2 KB
    1.21.9The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.9.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 255.3 KB
    1.20.1The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.20.1.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 242.1 KB
    1.21.7The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.7.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 243.7 KB
    1.21.10The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.10.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 235.9 KB
    1.21.8The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.8.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 243.7 KB
    1.20.3The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.20.3.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 238.3 KB
    1.21.6The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.6.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 243.7 KB
    1.21.6The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.6.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 235.7 KB
    1.21The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 254.0 KB
    1.20.1The latest file for its Minecraft version and loader·Loader not stated1.3.0-paper1.3.0-paper · trueuuid-1.3.0-paper-1.20.1.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 328.0 KB
    1.21.8The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.8.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 255.6 KB
    1.21.4The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · trueuuid-1.3.0-neoforge-1.21.4.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 235.7 KB
    1.21.1The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.21.1.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 254.2 KB
    1.21.5The latest file for its Minecraft version and loader·Fabric1.3.01.3.0 · trueuuid-1.3.0-fabric-1.21.5.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 243.7 KB
    1.20.6The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · trueuuid-1.3.0-forge-1.20.6.jar (main file)·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthRemoved from CurseForge on 24 Sep 2026Download · Stable · 236.0 KB
    1 to 20 of 109123456

    Quick fixes

    In the last 2 years, 3 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 2 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.3

    • trueuuid-1.0.8-neoforge1.21.1.jar16 May 2026
    • 1.0.29 Sep 2025Fix Bug
    • 1.0.18 Sep 2025…clearer offline fallback chat message. Fixed - Client sometimes only showed “Disconnected” without…