Eunomia
ModA library mod that handles networking (including packages, serialization and comms) as well as providing means to build native-looking user interfaces more easily.
- Security
- Passed
- Privacy
- Goes online
- Runs on
- Varies by version
- Loaders
- Fabric, Forge, NeoForge, Quilt
- Minecraft versions
- Up to 26.3
Why gradeB
How grades workStrengths
Points lost
- First release only 2 months ago−6 points
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
Full points21 / 21Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 weeks ago (21 Sep 2026) 12 / 12Supports 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.26.3 (latest) on NeoForge, Fabric and Quilt, 1.20.1 on Forge 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Does not apply. The project is under 6 months old.Stability
Full points15 / 15Removed 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.1 of the 35 modpacks with two or more versions removed it in a later one (3%) 10 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Does not apply. The project is under 6 months old.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 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · zannagh/eunomia 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · zannagh/eunomia 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.182,618 3 / 4Track record
6 points lost2 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2 months, 363 releases 2 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 19 latest files for recent Minecraft versions. See Security
50.7 of the 58 points that apply = 87 out of 100. The points above are rounded to whole numbers.
About
Eunomia is a developer library that helps Minecraft mods and plugins communicate between clients and servers and build synchronized configuration systems, rather than adding standalone gameplay content. Its packet framework lets developers define packets as plain Java classes, register handlers, and send messages from clients to servers, to individual players, or by broadcast, with direction checks to catch mismatched sends. The framework also negotiates server capabilities when a client joins, so mods can check whether Eunomia and a particular packet receiver are available before choosing how to communicate. For player-specific settings, Eunomia can store configurations by authenticated player UUID, synchronize them through packets, and save them to disk so they persist across restarts. The same communication definitions and wire format are designed to work across Fabric, NeoForge, and Paper-based servers, including Bukkit and Purpur.
Written from Modrinth , CurseForge and the GitHub README . How we write it
In-game changes
Changes the game's code in 6 areas, as a library other mods build on: Networking and multiplayerChanges 2 game code files in this area: connections, the server list and what is sent between your game and a server., Rendering and graphicsChanges 1 game code file in this area: drawing mobs, items, particles and textures on screen., User interfaceChanges 1 game code file in this area: menus, screens, tooltips, the chat window and the in-game overlay., PlayerChanges 1 game code file in this area: your character: movement, abilities, hunger and controls., Game data and resourcesChanges 1 game code file in this area: recipes, tags, advancements, language files and other game data. and Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Details
- Creator
- zannagh
- License
- MIT License
- Downloads
- 183K
- Created
- 15 Aug 2026
- 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.
The author declares on Modrinth that this mod interacts with your system outside the game.
What it can do on your computer
- 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 to 26.3; NeoForge 1.21 to 26.3; Forge 1.20.1.
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. Only in its files for Fabric 1.20 to 26.3; NeoForge 1.21 to 26.3; Forge 1.20.1. See Privacy
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
- 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.23 latest files: the newest file for each Minecraft version and loader. The answer above is about the 19 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
- 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
We found nothing it sends about you
We read its code without running it: it contacts 1 web address while you play.
Like any connection, each address it contacts sees your IP address.
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
- 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 19 files, for recent Minecraft versions. See each file in Releases
- Address built while the game runsThe code builds this address while the game runs: it is not written in the file.Purpose not known.
- 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
An instructions file for AI instructions file (AGENTS.md) is in 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
- 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.: A AI instructions file (AGENTS.md) file
AGENTS.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 found20 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 found1 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 file215 code files read
Compatibility
See all 363 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need Eunomia to work.
Modpacks using this project
Find modpacks with it49 modpacks include Eunomia in at least one of their versions. Here are the 30 most downloaded.
Better OneBlock [One Block]794K downloadslast version with it 25 Oct 2026
TNP Limitless 8 - LL8333K downloadslast version with it 25 Oct 2026
CastCrafter CA14 Mische56K downloadslast version with it 19 Oct 2026
Craft Attack 137.8K downloadslast version with it 10 Oct 2026
Server PLUS4.6K downloadslast version with it 22 Oct 2026
BastiGHG Modpack3K downloadslast version with it 10 Oct 2026
Optimized Project3K downloadslast version with it 24 Oct 2026
Vanilla+ Game2.8K downloadslast version with it 23 Oct 2026
Kart's Chaotic Kit1.9K downloadslast version with it 21 Oct 2026
Everleaf1.5K downloadslast version with it 6 Oct 2026Often in the same modpacks
Mods that modpacks often add together with Eunomia. Share: how many of the modpacks with Eunomia also have that mod.
LithiumAModin 78% of the modpacks with Eunomia
LambDynamicLights - Dynamic LightsAModin 69% of the modpacks with Eunomia
Mod MenuAModin 65% of the modpacks with Eunomia
FerriteCoreAModin 65% of the modpacks with Eunomia
Sodium ExtraAModin 59% of the modpacks with Eunomia
Chat HeadsAModin 59% of the modpacks with Eunomia
Zoomify (Zoom)AModin 49% of the modpacks with Eunomia
Reese's Sodium OptionsAModin 49% of the modpacks with Eunomia
Particle RainBModin 47% of the modpacks with Eunomia
Dynamic FPSAModin 47% of the modpacks with EunomiaLatest 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.