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    2,054,849 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 2026.269,417 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Petrolpark's Library

    Mod

    Shared code that helps the author's other mods work.

    A90/ 100
    • OverviewA
    • SecurityPassed
    • PrivacySends data
    • AIPossible AI tool
    • CompatibilityUp to 1.21.1
    • ModpacksIn 1,204
    • ReleasesLatest 19 Oct

    Download

    petrolpark-1.21.1-1.5.11.jar

    Released 14 Sep 2026 · 6.8 MB

    Passed: our checks found nothing harmful in this file.

    A newer beta from 19 Oct 2026 is in Releases.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

    • Security checks passed
    • Regular releases for Minecraft 1.21.1, a version many recently updated mods still support
    • Public source code and issue tracker
    • Widely used
    • Around for years

    Points lost

    • Many modpacks removed it−4 points
    • Releases replaced within 3 days to fix a problem−3 points
    All 11 criteria

    • Maintenance

      Full points27 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 days ago (19 Oct 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.1.21.1 on NeoForge, 1.20.1 on Forge. 65% of the 995 popular NeoForge mods updated in the last 6 months also have files for 1.21.1. 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.Releases in 20 of the last 24 months 6 / 6

    • Stability

      7 points lost15 / 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.83 of the 379 modpacks with two or more versions removed it in a later one (22%) See the 83 modpacks6 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.16 of its 66 releases in 2 years needed a quick fix (24%) See the 16 releases4 / 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 · petrolpark/Create-Library 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · petrolpark/Create-Library 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.3,200,959 4 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.2 years, 76 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 5 latest files for recent Minecraft versions. See Security
    Total90 / 100

    63.6 of the 71 points that apply = 90 out of 100. The points above are rounded to whole numbers.

    About

    Petrolpark's Library is a shared code and data-driven API library for mod and modpack developers, providing reusable systems for projects including Create add-ons; it can run without Create, with Create-specific features disabled when Create is absent. Its Flags can be attached to item and fluid stacks and some other objects, persist through crafting and other supported processing, and can be used to carry properties such as poison from ingredients into crafted items. Items can also decay over time, transforming into another item or having their components changed, while ageing recipes let items in a barrel or compatible container begin a decay that stops when they are removed. The library provides a Teams system for associating data with groups of players, including team-bound items and block entities that let members share information. For data-driven recipes and loot systems, it adds more expressive ingredient APIs with descriptions and improved example stacks for recipe viewers, along with number providers that can draw on item, entity, and team properties. Its wood API supports items and blocks made from vanilla or modded wood, with models that adapt their textures to the chosen wood type.

    Written from Modrinth . How we write it

    In-game changes

    Changes the game's code in 10 areas, as a library other mods build on: Mobs and their behaviorChanges 17 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Inventory and itemsChanges 14 game code files in this area: items, chests and other containers, crafting and enchanting., Blocks and fluidsChanges 7 game code files in this area: how blocks, fluids and redstone work., User interfaceChanges 3 game code files in this area: menus, screens, tooltips, the chat window and the in-game overlay., PlayerChanges 3 game code files in this area: your character: movement, abilities, hunger and controls., Rendering and graphicsChanges 2 game code files in this area: drawing mobs, items, particles and textures on screen., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., Game optionsChanges 1 game code file in this area: settings, key bindings and the option screens., 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 Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses..

    Libraries packed inside it change 13 more game code files: Flywheel and Ponder.

    Adds 1 block: Tube Segment; 4 items: Order, Order Book, Recipe Book and Shulker Belt; 1 biome: Unknown Biome; 1 key binding: Ponder; 32 recipes, 13 advancements and 13 loot tables.

    Counted from the names and data files in the mod, so the list may not be complete.

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

    Often used with it

    See all 29
    Create: Copycats+ACreate: Enchantment IndustryACreate: ConnectedACreate DecoBCreate Slice & DiceA

    Details

    Creator
    petrolpark
    License
    All rights reserved
    Downloads
    3.2M
    Created
    25 Aug 2024
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Wiki , Discord

    Security

    No harmful code found

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

    What it can do on your computer

    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. Found in the mod's own code and in commons-math3, a library it includes. See Privacy
    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them.

    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 5 latest files checked, last on 17 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.
      5 latest files: the newest file for each Minecraft version and loader. All 5 are 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.
    • 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

    Sent to badges.petrolpark.co.uk and us-central1.gcp.data.mongodb-api.com.

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

    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 5 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 5 files, for recent Minecraft versions. See each file in Releases
    • badges.petrolpark.co.uk
      Downloads badges for your account. Talks to the mod's badge service.Explained by AI (may be wrong)Explained by an AI from the code. May be wrong.
      Your player ID
    • us-central1.gcp.data.mongodb-api.com
      Purpose not known.
      Your player ID
    • 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

    An AI tool may have been used

    GitHub Copilot is named in the ignore list of its repository.

    This does not show that it was used to make the files you download.

    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 · 6 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.
      Possible signThe tool was seen around the project. This does not show that it was used to make the files you download.: GitHub Copilot files listed in its ignore list .github/copilot-instructions.md
    • 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
      39 of 40 changelogs read
    • 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
      96 images 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
      2,789 code files read

    Compatibility

    See all 76 files
    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.
    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 1.21.1. Many recently updated mods still support 1.21.1.

    Related projects

    Projects that need Petrolpark's Library to work.

    ProjectTypeDownloadsGrade
    Petrol's PartsAMod2.8M downloadsDestroyDMod247K downloadspqualityAMod2.7K downloadsCreate: kinetics limitationsDMod103 downloads

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    2001000
    Oct 2024: 77 modpacksNov 2024: 77 modpacksDec 2024: 89 modpacksJan 2025: 96 modpacksFeb 2025: 99 modpacksMar 2025: 68 modpacksApr 2025: 83 modpacksMay 2025: 107 modpacksJun 2025: 108 modpacksJul 2025: 101 modpacksAug 2025: 98 modpacksSep 2025: 84 modpacksOct 2025: 93 modpacksNov 2025: 73 modpacksDec 2025: 112 modpacksJan 2026: 101 modpacksFeb 2026: 108 modpacksMar 2026: 119 modpacksApr 2026: 125 modpacksMay 2026: 110 modpacksJun 2026: 95 modpacksJul 2026: 85 modpacksAug 2026: 82 modpacksSep 2026: 76 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202477
    Nov 202477
    Dec 202489
    Jan 202596
    Feb 202599
    Mar 202568
    Apr 202583
    May 2025107
    Jun 2025108
    Jul 2025101
    Aug 202598
    Sep 202584
    Oct 202593
    Nov 202573
    Dec 2025112
    Jan 2026101
    Feb 2026108
    Mar 2026119
    Apr 2026125
    May 2026110
    Jun 202695
    Jul 202685
    Aug 202682
    Sep 202676

    1,204 modpacks include Petrolpark's Library in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    All of Create1.9M downloadslast version with it 20 Jan 2026Linggango - [V6.5 IS OUT]1.3M downloadslast version with it 17 Jul 2026SUPERIOR - RPG513K downloadslast version with it 26 Jul 2025命运齿轮FOM机械动力航空学【Fate's Machinery】403K downloadslast version with it 19 Oct 2026Ages Of War (Nukes,Bombs and Guns!!)350K downloadslast version with it 6 Jan 2026All The Mods - Gravitas² 213K downloadslast version with it 19 Apr 2026MineColonies - Create & Conquer159K downloadslast version with it 4 Oct 2026Agmundr - Zombie Apocalypse122K downloadslast version with it 11 Jul 2026Day of the Dead (Zombie Apocalypse)84K downloadslast version with it 16 Apr 2025Mystic's Monstrosity84K downloadslast version with it 26 Jan 2025
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Petrolpark's Library. Share: how many of the modpacks with Petrolpark's Library also have that mod.

    ProjectTypeShareGrade
    Create: Copycats+AModin 83% of the modpacks with Petrolpark's LibraryCreate: Enchantment IndustryAModin 83% of the modpacks with Petrolpark's LibraryCreate: ConnectedAModin 78% of the modpacks with Petrolpark's LibraryCreate DecoBModin 67% of the modpacks with Petrolpark's LibraryCreate Slice & DiceAModin 67% of the modpacks with Petrolpark's LibraryCreate: Bells & WhistlesCModin 66% of the modpacks with Petrolpark's LibraryCreate Stuff 'N AdditionsAModin 61% of the modpacks with Petrolpark's LibraryAmendmentsAModin 60% of the modpacks with Petrolpark's LibraryCreate: InteriorsAModin 57% of the modpacks with Petrolpark's LibraryCreate EncasedAModin 57% of the modpacks with Petrolpark's Library
    1 to 10 of 29123

    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
    1.21.1·NeoForge1.5.111.5.11 · petrolpark-1.21.1-1.5.11.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·NeoForge1.5.101.5.10 · petrolpark-1.21.1-1.5.10.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·NeoForge1.4.251.4.25 · petrolpark-1.20.1-1.4.25-all.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·NeoForge1.4.41.4.4 · petrolpark-1.20.1-1.4.4-all.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·Forge1.4.271.4.27 · petrolpark-1.20.1-1.4.27-all.jarSends: Player IDRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    76 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1·NeoForge1.5.121.5.12 · petrolpark-1.21.1-1.5.12.jar (main file, 2 other files in this version not shown)Beta·19 Oct 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.8 MB
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.5.111.5.11 · petrolpark-1.21.1-1.5.11.jar (main file, 2 other files in this version not shown)·14 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 6.8 MB
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.5.101.5.10 · petrolpark-1.21.1-1.5.10.jar (main file, 2 other files in this version not shown)·7 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 6.7 MB
    1.21.1·NeoForge1.5.91.5.9 · petrolpark-1.21.1-1.5.9.jar (main file, 2 other files in this version not shown)Beta·6 Sep 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.7 MB
    1.21.1·NeoForge1.5.81.5.8 · petrolpark-1.21.1-1.5.8.jar (main file, 2 other files in this version not shown)Beta·5 Sep 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.7 MB
    1.21.1·NeoForge1.5.71.5.7 · petrolpark-1.21.1-1.5.7.jar (main file, 2 other files in this version not shown)Beta·5 Sep 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.7 MB
    1.21.1·NeoForge1.5.61.5.6 · petrolpark-1.21.1-1.5.6.jar (main file, 2 other files in this version not shown)Beta·23 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.5.51.5.5 · petrolpark-1.21.1-1.5.5.jar (main file, 2 other files in this version not shown)Beta·21 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.5.41.5.4 · petrolpark-1.21.1-1.5.4.jar (main file, 2 other files in this version not shown)Beta·21 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.5.31.5.3 · petrolpark-1.21.1-1.5.3.jar (main file, 2 other files in this version not shown)Beta·20 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.5.21.5.2 · petrolpark-1.21.1-1.5.2.jar (main file, 2 other files in this version not shown)Beta·16 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.5.11.5.1 · petrolpark-1.21.1-1.5.1.jar (main file, 2 other files in this version not shown)·2 Aug 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 6.6 MB
    1.21.1·NeoForge1.5.01.5.0 · petrolpark-1.21.1-1.5.0.jar (main file, 2 other files in this version not shown)Beta·24 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.6 MB
    1.21.1·NeoForge1.4.361.4.36 · petrolpark-1.21.1-1.4.36.jar (main file, 2 other files in this version not shown)Beta·15 Jun 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.351.4.35 · petrolpark-1.21.1-1.4.35.jar (main file, 2 other files in this version not shown)Beta·16 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.341.4.34 · petrolpark-1.21.1-1.4.34.jar (main file, 2 other files in this version not shown)Beta·9 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.331.4.33 · petrolpark-1.21.1-1.4.33.jar (main file, 2 other files in this version not shown)Beta·8 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.321.4.32 · petrolpark-1.21.1-1.4.32.jar (main file, 2 other files in this version not shown)Beta·25 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.311.4.31 · petrolpark-1.21.1-1.4.31.jar (main file, 2 other files in this version not shown)Beta·23 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 6.2 MB
    1.21.1·NeoForge1.4.301.4.30 · petrolpark-1.21.1-1.4.30.jar (main file, 2 other files in this version not shown)Beta·22 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 4.0 MB
    1 to 20 of 761234

    Quick fixes

    In the last 2 years, 16 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 3 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.16

    • 1.21.1-1.5.107 Sep 2026Bug Fixes - Update to latest JEI
    • 1.21.1-1.5.96 Sep 2026Bug Fixes - Crash on dedicated server - Couldn't place Coaxial…
    • 1.21.1-1.5.85 Sep 2026Bug Fixes - Unable to load worlds
    • 1.21.1-1.5.623 Aug 2026Bug Fixes - Crash when mining multi-part blocks in survival…
    • 1.21.1-1.5.421 Aug 2026Bug Fixes - Various crashes when pquality not installed
    • 1.21.1-1.5.521 Aug 2026Bug Fixes - Harness models missing
    • 1.21.1-1.4.349 May 2026Bug Fixes - Various crashes associated with propagating rotation…
    • 1.21.1-1.4.3225 Apr 2026Bug Fixes - Some tags broken
    • 1.21.1-1.4.3022 Mar 2026Bug Fixes - Crash on startup
    • 1.20.1-1.4.2125 Oct 2025Bug Fixes - Crash when placing Create kinetic machines (1.20.1)…
    • 1.21.1-1.4.192 Oct 2025Bug Fixes - Server crash ([RoootTheFox…
    • 1.21.1-1.4.1619 Aug 2025Bug Fixes - Crash when processing in Millstone
    • 1.21.1-1.4.1516 Aug 2025Bug Fixes - Unable to load worlds with Iron Spells n' Spellbooks…
    • 1.21.1-1.4.631 Mar 2025Bug Fixes - Crash when assembling Contraptions (1.21.1)…
    • 1.20.1-1.3.421 Jan 2025Bug Fixes - Crashes with library dependencies that do not have…
    • 1.20.1-1.2.110 Jan 2025