Arc Lib
Arc Lib is a library for mod developers that connects actions, conditions and rewards through a data-driven framework.
What it does
Arc Lib implements the Action, Reward and Condition framework for other mods to build on. A developer defines an in-game event as an action, attaches checks on the game state, and assigns a reward such as items, experience or an effect that is granted once those checks pass.
The library is open source under the Apache License 2.0 and publishes builds for Fabric, Forge and NeoForge across 14 release versions, 1.19.2 – 26.2. Its required dependencies are Architectury API, SuperMartijn642's Config Lib, UI Lib and YAML Config. Five catalog mods require it, including Item Restrictions, Jobs+, Questlines, Challenges and Jobs+ Harvest Addon. Servers that run it need every player to install it too.
Key features
Data-driven actions
Actions are triggered by in-game events such as block placement, item use, entity interaction and mob defeats.
Configurable conditions
Conditions can check the state of the world at the moment an action fires, such as its surroundings or the time of day.
Configurable rewards
Rewards can grant items, experience points, buffs or other effects when a condition is satisfied.
Developer framework
Other mods can declare their own actions, conditions and rewards on top of the shared framework.
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x8 of 8 versions with builds
1.20.x1 of 1 version 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 3
Required by 5 mods
Use cases
Quest and progression mods
Mods such as Questlines and Challenges can use actions and rewards to track player progress.
Job systems
Job mods can tie rewards to block breaking, crafting or mob kills defined through the framework.
Who it’s for: Mod developers who want to add data-driven actions, conditions and rewards to their own mods, and server owners who run packs that include those mods.
How it compares
NoxaFrame is client-side only, open source under the Mozilla Public License 2.0, and covers 1.20.1 – 1.21.1 on Fabric and NeoForge. Rules4Worlds is server-side only, open source under the Apache License 2.0, and covers 1.19 – 1.21.1 on Fabric. Data Criteria is server-side only, open source under the MIT License, and covers 1.18.2 – 1.20.1 on Fabric and Quilt.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Arc Lib | Fabric, Forge and NeoForge | 1.19.2 – 26.2 | Client and server | 2026-09-12 |
| NoxaFrame | Fabric and NeoForge | 1.20.1 – 1.21.1 | Client-side only | 2026-04-20 |
| Rules4Worlds | Fabric | 1.19 – 1.21.1 | Server-side only | 2024-08-17 |
| Data Criteria | Fabric and Quilt | 1.18.2 – 1.20.1 | Server-side only | 2023-07-17 |
Questions
Does Arc Lib need to be installed on the server?
Which dependencies does Arc Lib require?
Which game versions does Arc Lib support?
In the catalog
Arc Lib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 13,894 mods support Minecraft 26.2.
More from DAQEM Studios
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What the author says
Arc is a powerful and versatile data-driven action mod library specifically designed for mod developers in Minecraft. This comprehensive library empowers developers to incorporate dynamic actions, conditions, and rewards into their own mods, providing a seamless and customizable experience for players. With Arc, mod…
Official listing
- Modrinth page
- modrinth.com/mod/arc
- Owner
- DAQEM Studios
- Published
- 2023-07-04
- Updated on Modrinth
- 2026-09-12
- Facts verified
- 2026-10-15