AutoEMC

Automatic, safe EMC value generation for ProjectE.

AutoEMC scans your modpack's item registry and recipes on startup and fills in missing ProjectE EMC values automatically, so you're not stuck with a Table of Existence full of "unlearnable" items. It's built for large kitchen-sink modpacks where manually pricing every item is unrealistic.

What it does

• Solves EMC from recipes first. AutoEMC walks your loaded recipes and derives EMC values from known inputs before ever guessing, so pricing stays internally consistent wherever possible.
• Falls back intelligently when there's no recipe. Items with no recipe path are priced using:
  • Bundled baseline values pulled directly from ProjectE Integration's shipped data (Botania, EnderIO, and dozens of other mods).
  • Material/tag-based fallback (ore, ingot, dust, block, raw forms, etc.), matched against forge, mekanism, create, and other configurable tag namespaces.
  • Rarity-based fallback as a last resort, with a reverse-recipe floor so cheap raw materials can't end up worth less than the processed goods made from them.
• Understands NBT-tagged items. A pluggable NBT material resolver framework (with built-in support for things like Avaritia singularities) prices NBT-variant items based on their embedded material, instead of lumping them all into one generic value. This can run both as a pre-scan pass and as a live ProjectE conversion source that resolves on demand.
• Protects the economy from itself. Several safety layers work together:
  • Creative-only and no-recipe technical items are locked to 1 EMC so they can never become a cheap source of infinite value if they somehow leak into survival.
  • A large-drop guard blocks any single-run change that would crash an already-priced item's value by more than a configurable ratio, and logs it to a quarantine report instead of silently applying it.
  • An ownership arbiter decides, item by item, whether AutoEMC should keep tracking a value or hand it off to ProjectE/a pack author's manual entry — so legitimate overrides are respected but ProjectE simply echoing AutoEMC's own last value can't cause ownership (and the entry) to be deleted.
• Batched and adaptive. Every scan phase runs in small, adaptively-sized chunks across ticks instead of freezing the server on startup, even on packs with thousands of items.
• Transparent. Every generated value is logged with its source (baseline, tag-material, rarity-fallback, reverse-recipe-floor, creative-no-recipe, etc.), and the mod writes out diagnostic reports each scan:
  • generated_entries.json — everything AutoEMC currently owns
  • underpriced_inputs_report.json — non-owned items that look priced too low relative to what they're used to craft
  • quarantined_drops.json — value changes that were blocked for looking unsafe

Requirements

• Minecraft 1.16.5, Forge
• ProjectE (required)
• ProjectE Integration (required — AutoEMC's bundled baseline data is sourced from it, and it must be present for those integrations to actually function in-game)

Configuration highlights

All of the following are configurable in autoemc-common.toml:

• scanNbtVariants — scan NBT-tagged item variants (on by default)
• useNbtMaterialResolvers / useLiveNbtMaterialResolution — enable material-aware NBT pricing, pre-baked and/or live
• giveCreativeNoRecipeItemsOneEmc — toggle the creative-item safety floor (on by default)
• largeDropProtectionThreshold / maxAllowedDropRatio — tune the large-drop guard
• ownershipSmallDifferenceRatio — how much difference between AutoEMC's and ProjectE's value counts as "just noise"
• tagFallbackNamespaces — which tag namespaces are checked during material fallback
• consistencyWarnMinRatio / consistencyWarnMinAbsoluteDelta — thresholds for the underpriced-input report

Notes

• AutoEMC never overwrites a value that's already correctly priced by ProjectE or a pack author unless it's confident the change is safe.
• If you're auditing a pack's economy, the debug log and JSON reports in config/autoemc/ are the fastest way to see exactly what was priced, how, and why.