Mekanism: Mekacrafter

Recursive autocrafting works through the whole recipe tree. Asking for an item makes the machine work out every intermediate, how many of each craft is needed, and whether the stored materials are enough, then craft everything virtually out of the QIO storage. Materials are reserved before crafting starts, so a cancelled or failed job returns them. If the server restarts mid-craft, the machine returns the materials and the QIO re-plans the job.

Patterns are encoded once and can be reused. Crafting table and stonecutter recipes are supported, including stone bricks and slabs. Requests are tracked in a job queue of up to 24 entries, each showing a progress bar with its sub-jobs, total energy and time, and can be cancelled or cleared. Planning runs on its own thread, so large recipe trees do not freeze the server tick. The machine itself stores no items or energy, and the mod needs Mekanism to run. It is published for Forge and NeoForge only, across the 1.20.1 – 1.21.1 range, under All rights reserved, and is not open source.