AutoEMC

AutoEMC scans the item registry and loaded recipes when the game starts, and fills in any missing ProjectE EMC values. It solves EMC recipes first, deriving values for items from known inputs before it falls back to any guess. Pricing stays internally consistent wherever possible, so items made from priced ingredients follow from them. Bundled baseline values are taken from ProjectE Integration's shipped data, and the mod also covers items from Botania, EnderIO and dozens of other mods.

For items without a usable recipe path, AutoEMC applies a material or tag-based fallback, matching ore, ingot, dust, block and raw forms against Forge tags. Mekanism, Create and other configurable tag namespaces are included in that matching. As a final fallback, a rarity-based estimate applies, and a reverse-recipe floor keeps raw materials from being priced below the refined goods crafted out of them.

The mod also protects the economy. Multiple protective layers operate side by side: technical items that exist only in creative mode and have no recipe are fixed at 1 EMC, which stops them from becoming an inexpensive infinite-value source that spreads into survival play. Configuration lives in autoemc-common.toml. AutoEMC is client and server, so the server and every player need it. It is published for Forge and NeoForge, for 19 game versions 1.12.2 – 1.21.11, and is released under All rights reserved, so it is not open source.