dataLib

About Advanced Minecraft Java datapack library for storage, predicates, events, and utilities. Topics minecraft

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About this Mod

dataLib

dataLib is a mod framework for Minecraft Java Edition datapack developers. It provides a structured macro execution system, modular API modules, and multi-version compatibility — no mods required.

Features

Feature	Description
Macro Execution	Call parametric functions with dynamic variable injection via `datalib:input` storage
Modular API	Ready-to-use modules for math, strings, player data, scheduling, hooks, flags, lists, and timers
Multi-Version	Compatible with 1.20.3 through 26.1 via overlay-based version system
Multiplayer-Safe	No global state conflicts — designed for concurrent player use
Permissions	Built-in `datalib:api/perm` module for role-based access control
Dialog System	Storage-driven UI dialogs via `datalib:api/dialog/open` (1.21.6+)
Hook System	Bind and fire custom events across datapacks

Who Is This For?

dataLib is built for datapack developers who need a reliable, reusable foundation instead of rewriting boilerplate from scratch. Suitable for admin tools, minigame systems, or complex player interaction logic.

Installation

Requires Minecraft Java Edition 26.1.2+

Download the latest .jar from Releases
Place the .jar into .minecraft/mods/
Run /datalib load yes
Grant yourself admin tag: /tag @s add datalib.admin

Available Versions

dataLib 5.1.2release

MC 1.20.3, 1.20.4, 23w51a, 23w51b, 24w03a, 24w03b, 24w04a, 24w05a, 24w05b, 24w06a, 24w07a, 24w09a, 24w10a, 24w11a, 24w12a, 24w13a, 24w14a, 1.20.5-pre1, 1.20.5-pre2, 1.20.5-pre3, 1.20.5-pre4, 1.20.5-rc1, 1.20.5-rc2, 1.20.5-rc3, 1.20.5, 1.20.6, 24w18a, 24w19a, 24w19b, 24w20a, 24w21a, 24w21b, 1.21-pre1, 1.21-pre2, 1.21-pre3, 1.21-pre4, 1.21-rc1, 1.21, 1.21.1, 24w33a, 24w34a, 24w35a, 24w36a, 24w37a, 24w38a, 24w39a, 24w40a, 1.21.2-pre1, 1.21.2-pre2, 1.21.2, 1.21.3, 24w44a, 24w45a, 24w46a, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric

May 27, 2026

dataLib 5.1.2release

May 27, 2026

How to Install dataLib on Your Server

Order Server

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

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.11).

Install Mod

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

Compatibility

Mod Loaders

datapackfabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+59 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

dataLib server crashes on startup – what to do?

Most common cause: wrong datapack 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 (1.21.11). You can switch loaders with one click in the panel.

Is dataLib compatible with datapack and fabric?

dataLib officially supports datapack, fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with dataLib – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if dataLib 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.