defCoreLib

⭐ — (1 endorsements) 📥 351 downloads 📌 v0.3.2 📅 7/5/2026
🟡 Updated this year

By def9a2a4 · library

⬇ Download Mod Source: Modrinth ↗ 📅 Updated: 7/24/2026 📅 Created: 7/5/2026

🔍 Analysis

  • 🏆 #1 of 25 library mods in this game by downloads

📋 About This Mod

# DefCoreLib Shared core library for the (https://def9a2a4.github.io/) plugin family - a data-driven custom-block engine plus demo content. On its own it only ships the engine and some command-only demo items; other plugins build their features on top of it. See https://def9a2a4.github.io/defCoreLib-docs/ (https://modrinth.com/plugin/defcorelib) ## What it provides - **Custom-block engine** - YAML-driven player-head blocks with states, redstone behavior, particles, light, storage, and animated display entities. In particular, the use of custom heads and display entities allows cool visuals ***without any mods or resource packs!*** - **Custom items & heads, recipe registration, and persistence** (chunk scan + self-healing) that companion plugins reuse instead of reimplementing. - **Mechanism engine** - turns groups of blocks into moving display entities + colliders: glue-based doors/drawbridges and mechanism minecarts. - **Recipe gating** - companion plugins switch their content's recipes on by namespace, so installing one adds a coherent, craftable feature set. - ~20 **command-only** demo blocks (candles, redstone/binary displays, storage barrels, alarms, spinning/pulsing decorations) - grab them with `/defcorelib give`. Not meant to be useful, just there for testing the functionality. ## Used by DefCoreLib is a dependency other plugins install alongside: - **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/vslab.md)** - vertical slabs - **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/bbanners.md)** - flag banners + large/huge banners - **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/mech.md)** - rotation mechanisms, glue, mechanism minecarts - **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/redstonedisplays.md)** - redstone power indicator heads - **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/pipes.md)** - item-transport pipes ## Gallery | Plugin | Preview | | --- | --- | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/vslab.md) | <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/vslab/vslabs.png" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/vslab/catalog.png" width="220"> | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/bbanners.md) | <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/bbanners/all.png" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/bbanners/huge.png" width="220"> | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/mech.md) | <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/mech/mech.gif" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/mech/mech-ingame.gif" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/mech/catalog-1.png" width="220"> | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/redstonedisplays.md) | <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/rsd/indicators-wall.png" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/rsd/indicators-lectern.png" width="220"> | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/pipes.md) | <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/pipes/demo-1.png" width="220"> <img src="https://def9a2a4.github.io/defCoreLib-docs/readmes/assets/pipes/demo-2.png" width="220"> | ## Commands Permission `corelib.admin`. | Command | Description | | --- | --- | | `/defcorelib give <id> ` | Give a custom item (`namespace:id` or shorthand; `give glue` -> glue brush) | | `/defcorelib list` | List all registered block ids | | `/defcorelib colliders` | Toggle mechanism collider glow visualization | | `/defcorelib cleanorphans ` | Find (and, with `confirm`, remove) orphaned display entities | ## Requires Nothing - this is the base plugin. ## Links - Docs & item catalog: https://def9a2a4.github.io/defCoreLib-docs/ - Repository: https://github.com/def9a2a4/defCoreLib/ - Issues: https://github.com/def9a2a4/defCoreLib/issues

# DefCoreLib

Shared core library for the [def9a2a4](https://def9a2a4.github.io/) plugin family - a data-driven custom-block engine plus demo content. On its own it only ships the engine and some command-only demo items; other plugins build their features on top of it. See https://def9a2a4.github.io/defCoreLib-docs/

(https://modrinth.com/plugin/defcorelib)

## What it provides

  • Custom-block engine - YAML-driven player-head blocks with states, redstone behavior, particles, light, storage, and animated display entities. In particular, the use of custom heads and display entities allows cool visuals without any mods or resource packs!
  • Custom items & heads, recipe registration, and persistence (chunk scan + self-healing) that companion plugins reuse instead of reimplementing.
  • Mechanism engine - turns groups of blocks into moving display entities + colliders: glue-based doors/drawbridges and mechanism minecarts.
  • Recipe gating - companion plugins switch their content's recipes on by namespace, so installing one adds a coherent, craftable feature set.
  • ~20 command-only demo blocks (candles, redstone/binary displays, storage barrels, alarms, spinning/pulsing decorations) - grab them with `/defcorelib give`. Not meant to be useful, just there for testing the functionality.

DefCoreLib is a dependency other plugins install alongside:

  • (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/vslab.md)** - vertical slabs
  • (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/bbanners.md)** - flag banners + large/huge banners
  • (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/mech.md)** - rotation mechanisms, glue, mechanism minecarts
  • (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/redstonedisplays.md)** - redstone power indicator heads
  • **(https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/pipes.md)** - item-transport pipes

| Plugin | Preview | | --- | --- | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/vslab.md) | | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/bbanners.md) | | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/mech.md) | | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/redstonedisplays.md) | | | (https://github.com/def9a2a4/defCoreLib/blob/main/docs/readmes/pipes.md) | |

## Commands

Permission `corelib.admin`.

| Command | Description | | --- | --- | | `/defcorelib give ` | Give a custom item (`namespace:id` or shorthand; `give glue` -> glue brush) | | `/defcorelib list` | List all registered block ids | | `/defcorelib colliders` | Toggle mechanism collider glow visualization | | `/defcorelib cleanorphans ` | Find (and, with `confirm`, remove) orphaned display entities |

## Requires

Nothing - this is the base plugin.

  • Docs & item catalog: https://def9a2a4.github.io/defCoreLib-docs/
  • Repository: https://github.com/def9a2a4/defCoreLib/
  • Issues: https://github.com/def9a2a4/defCoreLib/issues
🤖 AI-enhanced — based on mod data

📊 Mod Details

Game
Minecraft Plugins
Author
def9a2a4
Version
0.3.2
Downloads
351
Endorsements
1
Category
library
Created
7/5/2026
Updated
7/24/2026
Game Versions
1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4
Tags
library

🔧 How to Install Minecraft Plugins Mods

Download from Modrinth. Use Prism Launcher or drop into your mods folder.

📖 Full step-by-step install guide for Minecraft Plugins →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Minecraft Plugins commands, item IDs, and more.

❓ Frequently Asked Questions

Which Minecraft Plugins versions does defCoreLib support?

The author lists 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5. Other versions may work but are untested by the author.

What is the latest version of defCoreLib?

Version 0.3.2, published 2026-07-24 with 351 downloads recorded at the source.

Keep browsing — more Minecraft Plugins mods await

📋 All Minecraft Plugins Mods 🏆 Top 25 📂 More library 👤 More by def9a2a4 🔎 Similar Mods 🌐 Best library (All Games) 🔀 Check Compatibility ⚖️ Compare Mods 🆕 New Mods