Alexandria Lib
by ShiftTheDev
Alexandria Lib is a shared foundation for other mods, supplying utilities and helper code that dependent mods reuse instead of writing their own.
What it does
Alexandria Lib adds no gameplay of its own. Its job is to hold code that several mods need, so developers call one shared implementation rather than keeping copies in each project. Installing it alone changes nothing visible in the game; it becomes useful when a mod that depends on it is added.
The library is built for mod developers and the players who install their work. Players who add a dependent mod such as Pickable Pets, Pickable Villagers or Pickable Piglins also need Alexandria Lib present, and the dependency list of each of those mods names it. Installation requires Architectury API, Cloth Config API and Fabric API, and Mod Menu is optional. It runs on client and server, so both sides need it. Builds are published for Fabric and NeoForge for 1.21.1.
The latest files, 1.0.3.4 for 1.21.1, were published on 2026-09-30, and the project first appeared on 2025-09-13. The code is licensed under All rights reserved and is not open source, so redistribution is not granted by default.
Key features
Shared utilities
A set of reusable helper methods and utility classes that dependent mods can call instead of writing their own.
Common data structures
Shared data structures used across mods, so each project does not need its own implementation of the same containers.
Reduced duplicate code
Common code is kept in a single library, which reduces copies of the same logic spread through several mods.
Modding foundation
Exposes APIs that other mods build on, giving a central base that developers can depend on for shared behavior.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Optional 1
Required by 3 mods
Use cases
Who it’s for: The library suits mod developers who want shared utilities, and players who run mods that depend on it. Players who only want new gameplay content will not gain anything from installing it by itself.
Questions
Does Alexandria Lib need other mods installed?
Does Alexandria Lib have to be installed on both sides?
Which loaders does Alexandria Lib support for 1.21.1?
In the catalog
Alexandria Lib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
Alexandria is a lightweight library mod built to provide common utilities and abstractions for other mods. Named after the ancient Library of Alexandria, it serves as a central foundation of shared code, making development simpler and more efficient. 📚 Shared Utilities – A collection of reusable helpers, data…
Official listing
- Modrinth page
- modrinth.com/mod/alexandria-lib
- Owner
- ShiftTheDev
- Published
- 2025-09-13
- Updated on Modrinth
- 2026-09-30
- Facts verified
- 2026-10-15