PhLib

PhLib provides utility functions that Hex Casting addons can call instead of writing their own. It includes helpers for registering patterns, for creating common action types such as constant actions and literals, and for propagating mishaps that some casting environments would otherwise re-throw. Lani's gambits are also included among its contents. Hex Casting is required, and it is the only mod PhLib depends on.

Addon authors can build on PhLib in Scala or Java, and it also contains miscellaneous utility functions shared between projects. A command for adding iotas with arbitrary data is restricted to level 2 operators, so server owners control who can use it. PhLib runs on Fabric and is server-side only, so the server alone needs it and players join without installing anything. Files target 1.20.1 only, and the latest Fabric build is 0.1.4, released on 2026-08-08.

PhLib is open source under the GNU Lesser General Public License v3.0 or later. Two other catalog mods require it, Hexic and Iotaworks, which use it to convert and handle map iotas. Players install PhLib only as a dependency of those mods or of a Hex Casting addon, not on their own.