DECI-lib
ModCreate custom mobs with different attacks and behaviors.
Why gradeA
How grades workStrengths
Points lost
- First release only 6 months ago−4 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.3 months ago (7 Aug 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.1.21.1 on Fabric and NeoForge. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3. 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.2 of the 20 modpacks with two or more versions removed it in a later one (10%) 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 points7 / 7Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · cleannrooster/deci-lib 7 / 7Place 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 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.41,360 3 / 4Track record
4 points lost4 / 8AgeHow long the project has existed. It counts less when no new file came out recently.6 months, 23 releases 4 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
49.6 of the 55 points that apply = 90 out of 100. The points above are rounded to whole numbers.
Images
About
DECI-lib is a data-driven framework for creating custom mobs with datapacks, letting authors define their behavior, combat timing, and presentation in JSON rather than writing entity logic in code. Mob definitions combine discrete features such as wandering, melee attacks, sweeping strikes, charges, and ambushes, with attacks organized around windup, release, and recovery stages. Features use priorities and cooldowns to govern which abilities run and when, while data-defined movement, targeting, and positional constraints make mobs respond to their surroundings in predictable ways. Animation hooks can accompany behavior at different action stages, and the framework separates mob logic from its animation backend so definitions can work with systems such as AzureLib or GeckoLib, or alternative rendering approaches. The Apex Predator demonstrates a heavy beast with a radial ground slam, an arc swipe, and a basic melee attack, while Shadow Fist is a faster skirmisher that can vanish, reposition behind a target, dash, and sweep. Example spawn data places Apex Predator and Shadow Fist in dark, forested Overworld areas, with Shadow Fist also able to appear in small groups in dark forests. Authors can also configure mob archetypes, hitbox size, stat presets or explicit attributes, sounds, animation loops, and particle effects, and choose from behavior patterns including shockwaves and charges that can release damage in a radial burst or arc.
Written from CurseForge and the GitHub README . How we write it
In-game changes
Does not change the game's code directly.
Adds 7 items and 7 mobs.
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 30Details
- Creator
- cleannrooster
- License
- Not known
- Downloads
- 41K
- Created
- 3 May 2026
- Official page
- CurseForge
- Links
- Source code
Security
No harmful code found
We checked its files and read their code, without running it.
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.
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.2 latest files: the newest file for each Minecraft version and loader. Both 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
- 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
- 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 both files, 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 texts, files and images and found none.
We have not read its 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
- 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 found40 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 found41 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 file249 code files read
Compatibility
See all 23 filesPoint at or tap a version to see its loaders.
Modpacks using this project
Find modpacks with itModpacks that include DECI-lib in at least one of their versions, most downloaded first.
Fantasy MC Fabric1.9M downloadslast version with it 20 Jul 2026
Guild Adventures145K downloadslast version with it 20 Oct 2026
Ruthless Frontiers - A Diabolical RPG4K downloadslast version with it 17 Aug 2026
SKD MineColonies3.8K downloadslast version with it 25 Sep 2026
Savaru IV - Kohtalon Mies2.8K downloadslast version with it 22 Oct 2026
MacedCraft2.8K downloadslast version with it 2 Oct 2026
Create - The World(Arcane)1.3K downloadslast version with it 9 May 2026
Other Light (fantasy)1K downloadslast version with it 19 Oct 2026
Grandia Dungeons [Modpack]921 downloadslast version with it 7 Jun 2026
Steamland - SP786 downloadslast version with it 25 May 2026Often in the same modpacks
Mods that modpacks often add together with DECI-lib. Share: how many of the modpacks with DECI-lib also have that mod.
Trial GuardiansBModin 96% of the modpacks with DECI-lib
AccessoriesAModin 79% of the modpacks with DECI-lib
Explorer's CompassAModin 67% of the modpacks with DECI-lib
AmendmentsAModin 67% of the modpacks with DECI-lib
Dungeons and TavernsBModin 63% of the modpacks with DECI-lib
Reese's Sodium OptionsAModin 63% of the modpacks with DECI-lib
Loot IntegrationsAModin 58% of the modpacks with DECI-lib
fix GPU memory leakAModin 58% of the modpacks with DECI-lib
Towns and TowersBModin 58% of the modpacks with DECI-lib
LithiumAModin 58% of the modpacks with DECI-libLatest 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.