Truly Modular: Modular Item API

Truly Modular: Modular Item API

This mod is the API designed for the Truly Modular mods

by
66.6K Downloads
fabricforgeneoforgequiltlibraryutility
Rent Server with this Mod

Screenshots

A small selection of the possible Items
Truly Modular: Arsenal Addon
Truly Modular: Armory Addon
Truly Modular: Archery Addon

About this Mod

Truly Modular: Miapi

Truly Modular: Modular Item API is a modern cross Platform Data Driven Modular Item API.
It allows addons/other mods to easily implement highly complex Modular Items.

Dependencies:

If you are a User, this API is basicly Contentless, consider checking

  • Arsenal a melee Weapon and Tool focused Addon

  • Archery Focousing on Bows, Crossbows and Modular Arrows

For Developers :

  • Miapi includes various default APIs to streamline cross platform mod Modular Item mod Development.
  • Material Stats and their reference:
  • You can simply add a new Key to the Material.json and reference them like this
    "armor_pen": "[material.hardness]*2.0 + 20", within the module.json
  • for Examples one can always check the arsenal, archery and armory repositories
  • usable gui apis and default extendable Crafter gui
  • complex Module Properties and custom per Property resolving
  • almost 100 default Materials and dozens of default Properties to be used
  • complex and extendable per Module Rendering allowing to easily Implement custom new model Types and by default extended 3D capabilities
  • Synergies, Property Injections and Skins, are multiple system that are able to add/modify a modules and/or items properties
  • Generative Materials: Truly Modular Automaticly tries to scan other mods content to add Materials Automaticly. Handmade Materials are obvioulsy higher quality, but this adds a good bridge while there is no dedicated Compatibility
  • if you have any additional questions, feel free to ask on our discord

FAQ:

  • What Launcher is this for? Forge? Fabric?
    • Both, check the jars
  • Backport to older versions?
    • is not planned. There are many features in Truly Modular which have a significantly higher priority than backporting. Once the list of ideas is smaller we might consider backporting.
  • is X mod supported?
    • probably? Generative Compatiblity has a high chance of working with most mods out of the box. You can check here for more informations or to report issues
  • Can i write a Addon for this?
    • Yes, for any help feel free to visit our discord or check the API wiki for additional Help
  • Can i use this in a Modpack?
    • yes

Available Versions

Truly-Modular-miapi-neoforge-2.3.7-1.21release
MC 1.21, 1.21.1neoforge
June 10, 2026
Truly-Modular-miapi-fabric-2.3.7-1.21release
MC 1.21, 1.21.1fabric, quilt
June 10, 2026
Truly-Modular-miapi-neoforge-2.3.6-1.21release
MC 1.21, 1.21.1neoforge
April 23, 2026
Truly-Modular-miapi-fabric-2.3.6-1.21release
MC 1.21, 1.21.1fabric, quilt
April 23, 2026
Truly-Modular-miapi-neoforge-2.3.5-1.21release
MC 1.21, 1.21.1neoforge
April 16, 2026

How to Install Truly Modular: Modular Item API on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Truly Modular: Modular Item API". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforgequilt

Minecraft Versions

1.21.1, 1.21, 1.20.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Truly Modular: Modular Item API server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Truly Modular: Modular Item API compatible with fabric and forge and neoforge and quilt?

Truly Modular: Modular Item API officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.21, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Truly Modular: Modular Item API – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Truly Modular: Modular Item API consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Truly Modular: Modular Item API with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-Polyform-Shield-1.0.0-
Server-side
Required

Supported Versions

1.21.11.211.20.1