PandaLib
PandaLib is a library mod that gives other mod developers ready-made APIs for configs, networking, events and registration.
What it does
Developers use PandaLib as a shared base instead of writing their own configuration, synchronization and registration code. Its feature list covers a Config API, a Synchronization API, a JSON format preset, an Event and Listener API, a Deferred registration API, a Networking API and support for the play phase. A Multi-Loader Framework is listed as a work in progress.
Mods that depend on PandaLib need Architectury API and Fabric API installed beside it, and the library itself is published for Fabric, Forge and NeoForge. Because it is a library, it only has to be present where a dependent mod loads, and it can be run on a client, a server, or both. The files target 1.19.2 – 1.21.11 across 20 release versions, and the mod is open source under the GNU Lesser General Public License v3.0 only.
The description notes that the library is written in Kotlin, and that some of its APIs may not be fully supported from Java. Development is currently targeted at 1.21.10. Public links exist for the source code and the issue tracker.
Key features
Config API
A configuration API that lets a mod declare and load its settings through one shared interface.
Synchronization API
Helpers for keeping data in step between the server and connected clients.
Networking API
Packet handling for sending custom messages between the client and the server.
Event and listener API
A system for mods to publish events and let other code subscribe to them.
Deferred registration API
Registration of blocks, items and other objects that is resolved after the loader has started.
JSON format preset
A built-in JSON format that mods can use for their data files.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Required by 1 mod
Use cases
Who it’s for: The library is aimed at mod developers who want shared APIs for configuration, networking and registration. Players mainly meet it as a dependency of other mods.
How it compares
Brick Lib API covers Fabric, Forge and NeoForge for 1.18.2 – 1.21.5 and is open source under the Apache License 2.0, so it reaches older versions than PandaLib. NoxaFrame is a client-side only option for 1.20.1 – 1.21.1 under the Mozilla Public License 2.0. EventsLib is NeoForge only for 1.21 – 1.21.5 and is not open source, and the environment is client and server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| PandaLib | Fabric, Forge and NeoForge | 1.19.2 – 1.21.11 | Client or server, optional | 2026-09-01 |
| Brick Lib API | Fabric, Forge and NeoForge | 1.18.2 – 1.21.5 | Not published | 2026-03-22 |
| NoxaFrame | Fabric and NeoForge | 1.20.1 – 1.21.1 | Client-side only | 2026-04-20 |
| EventsLib | NeoForge | 1.21 – 1.21.5 | Client and server | 2025-05-21 |
Questions
Does PandaLib need other mods installed?
Which loaders does PandaLib support?
Must PandaLib be installed on a server?
In the catalog
PandaLib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
PandaLib is a library mod for Minecraft that provides various APIs and utilities to simplify mod development. The library is written in Kotlin, and some APIs might not be fully supported by Java.
Official listing
- Modrinth page
- modrinth.com/mod/pandalib
- Owner
- ThePandaOliver
- Published
- 2024-02-16
- Updated on Modrinth
- 2026-09-01
- Facts verified
- 2026-10-15