Source-checkedBuilding & decoration

prefab-custom-addon

by veyne · for Minecraft

A NeoForge addon for Prefab 1.20.1,1.21.1, adds custom building extension packs, works for both client and dedicated server。

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todayLast updated
MITLicense
Forge · NeoForgeLoaders

About prefab-custom-addon

From Modrinth

A NeoForge addon for Prefab 1.20.1,1.21.1, adds custom building extension packs, works for both client and dedicated server。

预制建筑附属 (Prefab Custom Addon)

Prefab 模组的附属扩展,让预制建筑模组可以自定义建筑。自定义建筑的过程完全图形化,只需要准备蓝图即可。

支持版本:1.21.1 (NeoForge) / 1.20.1 (Forge)

主要功能

建筑浏览器

  • 浏览本地拓展包中的所有建筑,支持分类、收藏、搜索
  • 3D 实时预览,鼠标悬浮可查看方块信息(配合 JEI/EMI 可查询)
  • 网站标签页:在线建筑库浏览与一键下载
  • 服务器标签页:查看服务器上可建造的建筑,一键建造

服务器建筑上传

  • 单人/多人通用:单人游戏可直接建造。多人游戏把本地建筑一键上传到服务器,上传后就能直接建造
  • 支持 .nbt / .litematic / .schem 格式,上传时自动转换打包
  • 自动检测建筑依赖,依赖缺失时阻止上传并给出提示
  • 服务器端防滥用:单文件大小限制、上传冷却、缓存总量上限
  • OP 可在管理界面删除建筑、控制玩家的上传权限

依赖检测

  • 建筑详情页会自动列出建筑用到的模组方块是否齐全
  • 缺失的依赖直接点击即可在游戏内搜索 Modrinth,找到对应模组

缺失方块占位

  • 遇到没安装的模组方块,不再凭空消失,而是显示「?」方块
  • 一眼看出建筑哪里缺东西,补上依赖后重新加载即可

建筑终端

手持建筑终端右键打开,集成了建筑相关的一切:

  • 建筑选择:浏览全部建筑并建造
  • 创建建筑:从外部文件(litematic / schem / nbt)导入,或直接在游戏内框选区域创建
  • 编辑原理图:逐方块修改建筑,支持撤销
  • 分类管理:自定义建筑分类

其他

  • 外包建筑蓝图:内置 8 个精美建筑的蓝图,合成后可预览并一键建造
  • 自定义推土机:清除区域 1~256 可调,可关闭掉落物
  • Jade 兼容:看向建筑时显示名称、尺寸、放置者
  • 材料交付:在详情页提交材料,交付进度实时显示

运行环境

| 依赖 | 说明 | |---|---| | Prefab | 必需,本模组是其附属 | | LDLib2 | 必需,界面与渲染框架 |

安装

放入 mods 文件夹即可。

服务器

多人服务器:用本模组创建的建筑,可以直接上传到服务器里,提交好材料就可以直接放置建筑。服主和管理员可以禁止玩家上传建筑,删除已上传的建筑。

Prefab Custom Addon

An addon for Prefab that lets you add custom buildings to the Prefab mod. The whole process is fully in-game and graphical — all you need is a blueprint.

Available for: 1.21.1 (NeoForge) / 1.20.1 (Forge)

Features

Building Browser

  • Browse all buildings from your local extension packs, with categories, favorites and search
  • Real-time 3D preview with hover tooltips on blocks (works with JEI/EMI lookup)
  • Website tab: browse and download buildings from an online library
  • Server tab: see which buildings are buildable on the server and build them directly

Building Upload & Sync

  • Singleplayer and multiplayer: build directly in singleplayer. On servers, upload a local building with one click and it's ready to build
  • Supports .nbt / .litematic / .schem — automatically converted and packed on upload
  • Automatically checks building dependencies; upload is blocked with a clear message if something is missing
  • Server-side anti-abuse: per-file size limit, upload cooldown, cache quota
  • Admins (OP) can delete buildings and manage per-player upload permissions in a manage screen

Dependency Detection

  • The detail page lists every modded block type a building needs, checked against your installed mods
  • Missing dependencies are clickable — search Modrinth in-game and find the mod right away

Missing Block Placeholder

  • Blocks from mods you don't have installed show up as a "?" block instead of silently vanishing
  • Instantly see what's missing and where; install the dependency and reload

Building Terminal

Right-click with the Building Terminal in hand for everything building-related:

  • Buildings: browse and build everything
  • Create: import from files (litematic / schem / nbt), or select an area in-game
  • Schematic Editor: block-by-block editing with undo
  • Categories: organize your buildings

More

  • Outsource building blueprints: 8 pre-made building blueprints included — craft, preview and build
  • Custom Bulldozer: adjustable clearing area from 1 to 256, item drops optional
  • Jade compatibility: shows building name, size and placer when looking at one
  • Material delivery: submit materials on the detail page and watch the progress

Requirements

| Dependency | Note | |---|---| | Prefab | Required — this is an addon for it | | LDLib2 | Required — UI & rendering framework |

Installation

Drop the jar into the mods folder.

Multiplayer

Multiplayer: buildings created with this mod can be uploaded straight to the server — deliver the materials and place the building. Server owners and admins can deny upload permissions for players and delete uploaded buildings.

Highlights

From source data

Game versions

Supports 2 Minecraft versions, the newest being 1.21.1.

Loaders

Runs on Forge and NeoForge.

Footprint

Rated a light load on a server.

prefab-custom-addon on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Forge, NeoForge
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2.7.1, released 2026-11-04

Game versions by loader

LoaderGame versionsNewest
Forge1.20.11.20.1
NeoForge1.21.11.21.1

From 16 recorded builds of prefab-custom-addon.

Recent builds

BuildReleasedGame versionsLoaders
2.7.12026-11-041.21.1NeoForge
3.0.12026-11-011.20.1Forge
3.0.02026-10-301.20.1Forge
2.2.02026-10-221.20.1Forge
2.7.12026-10-151.21.1NeoForge
2.1.02026-10-151.20.1Forge

Dependencies

  • Required: modrinth project pTJ1ZloG (modrinth, not in our catalogue)
  • Required: modrinth project B1CBVXHX (modrinth, not in our catalogue)

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run prefab-custom-addon on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Building & decoration

Blocks, furniture, decorations and building tools.

Runs on your server

From source side support

Modrinth lists prefab-custom-addon as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
ForgeNeoForge
Runs on
Serverrequired on the server
Game versions
1.21.1 and 1 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-11-04Open ↗
  • ✓Authorveyne, as published on Modrinth
  • ✓LicenseMITFree

prefab-custom-addon, answered

Generated from the mod’s own source data.

Do my players need to install prefab-custom-addon?

Modrinth lists prefab-custom-addon as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Forge and NeoForge.

Is it free?

Yes. prefab-custom-addon is free to download from Modrinth. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run prefab-custom-addon on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add prefab-custom-addon in one click.