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    2,046,932 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 24 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 24 Oct 2026.269,480 projects gradedProjects with a letter from A to F. Counted on 24 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    LazuLib

    Mod

    Modding library used in Endor H mods.

    D55/ 100
    • OverviewD
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.20.1
    • ModpacksIn 61
    • ReleasesLatest Jan 2024

    Download

    lazulib-1.20.1-1.2.1.jar

    Released 24 Jan 2024 · 548.9 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade D

    How grades work

    Strengths

    • Security checks passed
    • Public source code

    Points lost

    • No release in 2.7 years−26 points
    • Some modpacks removed it−1 point
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      18 points lost9 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.2.8 years ago (24 Jan 2024) 0 / 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.1.20.1 on Forge and NeoForge. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. 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.No release in the last 24 months 0 / 6

    • Stability

      1 point lost14 / 15
      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.6 of the 52 modpacks with two or more versions removed it in a later one (12%) See the 6 modpacks9 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      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 points7 / 7
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · endorh/lazulib 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.Does not apply. CurseForge links are not in our data.

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.68,089 3 / 4

    • Track record

      8 points lost0 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.4.1 years, 16 releases 0 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file for recent Minecraft versions. See Security
    Total55 / 100

    33.4 of the 61 points that apply = 55 out of 100. The points above are rounded to whole numbers.

    About

    LazuLib is a reusable library of common utilities for Endor H mods and other Minecraft mod developers, and some mods may require players to install it as a dependency. Its math tools parse expressions with custom variables and functions, provide syntax highlighting, and support dynamic expressions for datapack formats. NBT utilities convert JSON to NBT, navigate or create paths through NBT data, compare values at selected paths, and define serializable predicates for matching numeric, string, list, and compound data. A shaped-recipe base type lets developers mark ingredients as NBT sources, merging their data into the crafted result while allowing result data to override inherited values. Networking base classes carry player or world references between client and server, and distributed player packets can be validated on the server before being relayed to other players. The library also includes mutable 3D vector and color utilities, failure-tolerant reflection helpers, audio fading and player-attached tickable sounds, and text tools for splitting and formatting multiline components. Its injected events give mod developers hooks for player travel and turning, remote-player movement, player-model rotations, cape rendering, elytra speed checks, End ship item frames, and texture-atlas registration.

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

    In-game changes

    Changes the game's code in 5 areas, as a library other mods build on: Rendering and graphicsChanges 3 game code files in this area: drawing mobs, items, particles and textures on screen., PlayerChanges 2 game code files in this area: your character: movement, abilities, hunger and controls., World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created., Networking and multiplayerChanges 1 game code file in this area: connections, the server list and what is sent between your game and a server. and Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act..

    Adds no new blocks, items or other content.

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

    Often used with it

    See all 30
    Elytra SlotCAerobatic ElytraEBetter Fps - Render DistanceBL_Ender's CataclysmBTowns and TowersB

    Details

    Creator
    endor8
    License
    MIT License
    Downloads
    68K
    Created
    11 Sep 2022
    Official page
    CurseForge
    Links
    Source code

    Security

    No harmful code found

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

    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 7 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.
      7 latest files: the newest file for each Minecraft version and loader. The answer above is about the one for a recent version. 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
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    We read its code without running it: it contacts no web address while you play.

    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 · Its one file 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 its one file, for recent Minecraft versions. See each file in Releases

    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 · 4 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.
      Not on Modrinth.
    • 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
      342 code files read

    Compatibility

    See all 16 files
    NeoForge
    Forge
    1.161.191.2126.1

    Point at or tap a version to see its loaders.

    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.Nothing
    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 1.20.1. Many recently updated mods still support 1.20.1.

    Modpacks using this project

    Find modpacks with it

    61 modpacks include LazuLib in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    The Pioneers218K downloadslast version with it 16 Feb 2024Basic VR Immersion13K downloadslast version with it 14 Jan 2024Nugget Pack: Rebirthed7.5K downloadslast version with it 8 Jan 2023Create pack2.8K downloadslast version with it 21 Oct 2024Lost Midgard2.1K downloadslast version with it 17 Nov 2024WhovianCraft (Doctor Who)2K downloadslast version with it 12 Oct 2024Arcane Mechanica1.5K downloadslast version with it 28 Apr 2024A Withered Tale (1.18.2)1.5K downloadslast version with it 6 Jan 2023Jimmu's Factory1.4K downloadslast version with it 29 Jan 2024Softis Selection1.3K downloadslast version with it 6 Nov 2024
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with LazuLib. Share: how many of the modpacks with LazuLib also have that mod.

    ProjectTypeShareGrade
    Elytra SlotCModin 57% of the modpacks with LazuLibAerobatic ElytraEModin 54% of the modpacks with LazuLibBetter Fps - Render DistanceBModin 54% of the modpacks with LazuLibL_Ender's CataclysmBModin 52% of the modpacks with LazuLibTowns and TowersBModin 52% of the modpacks with LazuLibAttributeFixAModin 52% of the modpacks with LazuLibServer Performance - Smooth Chunk SaveAModin 51% of the modpacks with LazuLibApotheosisAModin 46% of the modpacks with LazuLibYUNG's Better Ocean MonumentsAModin 46% of the modpacks with LazuLibBlueprintAModin 46% of the modpacks with LazuLib
    1 to 10 of 30123

    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
    1.20 to 1.20.1·NeoForge, Forge1.2.11.2.1 · lazulib-1.20.1-1.2.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.19.4·Forge1.0.11.0.1 · lazulib-1.19.4-1.0.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.19.3·Forge1.0.11.0.1 · lazulib-1.19.3-1.0.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.19 to 1.19.2·Forge1.0.11.0.1 · lazulib-1.19.2-1.0.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.18 to 1.18.2·Forge1.0.21.0.2 · lazulib-1.18.2-1.0.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.17 to 1.17.1·Forge1.0.21.0.2 · lazulib-1.17.1-1.0.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.16.3 to 1.16.5·Forge1.0.21.0.2 · lazulib-1.16.5-1.0.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    16 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20 to 1.20.11.20 to 1.20.1The latest file for its Minecraft version and loader·NeoForge, Forge1.2.11.2.1 · lazulib-1.20.1-1.2.1.jar·24 Jan 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 548.9 KB
    1.20 to 1.20.11.20 to 1.20.1·NeoForge, Forge1.2.01.2.0 · lazulib-1.20.1-1.2.0.jar·29 Dec 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 548.9 KB
    1.20 to 1.20.11.20 to 1.20.1·NeoForge, Forge1.0.11.0.1 · lazulib-1.20.1-1.0.1.jar·11 Oct 2023PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 527.2 KB
    1.19.4The latest file for its Minecraft version and loader·Forge1.0.11.0.1 · lazulib-1.19.4-1.0.1.jar·11 Oct 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 527.2 KB
    1.19.3The latest file for its Minecraft version and loader·Forge1.0.11.0.1 · lazulib-1.19.3-1.0.1.jar·11 Oct 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 527.2 KB
    1.18 to 1.18.21.18 to 1.18.2The latest file for its Minecraft version and loader·Forge1.0.21.0.2 · lazulib-1.18.2-1.0.2.jar·11 Jan 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 524.3 KB
    1.17 to 1.17.11.17 to 1.17.1The latest file for its Minecraft version and loader·Forge1.0.21.0.2 · lazulib-1.17.1-1.0.2.jar·11 Jan 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 524.3 KB
    1.16.3 to 1.16.51.16.3 to 1.16.5The latest file for its Minecraft version and loader·Forge1.0.21.0.2 · lazulib-1.16.5-1.0.2.jar·11 Jan 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 519.7 KB
    1.19 to 1.19.21.19 to 1.19.2The latest file for its Minecraft version and loader·Forge1.0.11.0.1 · lazulib-1.19.2-1.0.1.jar·10 Jan 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 526.9 KB
    1.18 to 1.18.21.18 to 1.18.2·Forge1.0.11.0.1 · lazulib-1.18.2-1.0.1.jar·10 Jan 2023PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 524.3 KB
    1.17 to 1.17.11.17 to 1.17.1·Forge1.0.11.0.1 · lazulib-1.17.1-1.0.1.jar·10 Jan 2023PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 524.3 KB
    1.16.3 to 1.16.51.16.3 to 1.16.5·Forge1.0.11.0.1 · lazulib-1.16.5-1.0.1.jar·10 Jan 2023PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 519.7 KB
    1.16.5·Forge1.0.01.0.0 · lazulib-1.16.5-1.0.0.jar·29 Sep 2022PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 519.6 KB
    1.17.1·Forge1.0.01.0.0 · lazulib-1.17.1-1.0.0.jar·29 Sep 2022PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 524.2 KB
    1.18 to 1.18.21.18 to 1.18.2·Forge1.0.01.0.0 · lazulib-1.18.2-1.0.0.jar·29 Sep 2022PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 524.1 KB
    1.19 to 1.19.21.19 to 1.19.2·Forge1.0.01.0.0 · lazulib-1.19.2-1.0.0.jar·29 Sep 2022PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 526.7 KB