THE FACTORY, DIAGNOSED IN CHAT

Your Factorio factory, diagnosed in Claude.

The Savecraft Export mod pushes your factory on every save -- production rates, power, science. Eleven calculators answer from the game's own data, and the factory doctor reads your actual numbers. Works with Claude and ChatGPT.

ADD FACTORIO SEE THE CALCULATORS
Factory health diagnosis showing Factory Stalled -- 5 critical bottlenecks, steel plate producing 38/min against 1,175/min consumed, copper cable needing one more Assembling Machine 3
Claude walking the research path to Artillery -- 7 technologies remaining, 12h 30m of research time, 172 already completed, with Vulcanus-tagged prerequisites listed in order
Production ratio calculator for electronic circuits -- machine counts by tier with belt requirements, computed from the game's recipe data
Savecraft Export mod on the Factorio mod portal Eleven calculators -- ratios, oil, power, trains, quality Factory health diagnosis from your own save Alpha -- vanilla recipe data
MOD-POWERED

Install the mod. The factory reports in.

Factorio's saves aren't readable mid-session, so Savecraft ships an in-game mod: it exports structured factory state to script-output, and the local daemon pushes it on every save.

Install once Grab the Savecraft Export mod from the Factorio mod portal and add it to your save. The Savecraft daemon watches script-output and does the rest -- no exports to run by hand.
Where the edges are This is an early (alpha) release. Reference calculators run on vanilla and official expansion data -- modded recipes and items aren't reflected yet. Your save's sections still capture modded state; the calculators answer for unmodded mechanics.
ELEVEN CALCULATORS

Ratios you don't have to alt-tab for.

Recipes, tech routes, ratios, oil, power, blueprints, evolution, modules, quality, trains -- computed from the game's own data files, so answers match the real recipes.

Recipe & Item Lookup

INSTANT

Look up any item, recipe, entity, or technology by exact name. Supports reverse lookups (what uses X, what produces Y). Returns exact ingredients, products, craft time, machine category, and allowed modules. Prevents hallucination on recipe data.

Tech Tree Navigator

INSTANT

Traverse technology prerequisite chains with total science pack costs. Given a target technology and completed research, compute the optimal research path and total cost by pack type.

Production Ratio Calculator

INSTANT

Given a target item and production rate, compute the full dependency tree: machine counts by tier, belt lane requirements, raw material input rates. Accounts for module effects, beacon transmission (distribution_efficiency / sqrt(n)), and productivity bonuses. Pass save_id to compare against your actual factory and identify bottlenecks.

Oil Processing Balancer

INSTANT

Given target fluid products and rates, compute optimal refinery and cracking plant counts for basic, advanced, or coal liquefaction processing. Returns machine counts, water and crude input rates, and surplus byproducts. Pass save_id to compare against your actual factory and identify bottlenecks.

Power Generation Calculator

INSTANT

Given power demand in MW, compute optimal generation setup for steam (boiler/engine ratios), solar (panel/accumulator ratios), or nuclear (reactor neighbor bonuses, heat exchanger and turbine counts, fuel cell consumption).

Blueprint Analyzer

INSTANT

Decode a Factorio blueprint string (version byte + base64 + zlib + JSON), extract the entity list, and evaluate production ratios, belt throughput, module usage, and inserter adequacy against baked-in recipe data.

Evolution & Threat Tracker

INSTANT

Analyze biter evolution and defense posture from save data. Returns evolution factor with source breakdown, enemy tier prediction, spawn weight distribution, and defense summary including turret counts, walls, and nearby enemy bases.

Module & Beacon Optimizer

INSTANT

Given a machine type, recipe, and production target, recommend optimal module and beacon configuration. Compares speed, productivity, and efficiency module combinations with beacon count trade-offs.

Factory Health Diagnosis

INSTANT

Diagnose factory health by cross-referencing production rates with recipe, machine, and technology data. Computes deficit causes, machine gaps, cascade risks, and tech unlock impacts. Pass save_id to analyze your factory.

Quality Tier Calculator

INSTANT

Compute quality tier probability distributions from module setup, including geometric re-roll chains. Calculate expected materials per legendary output and recycler loop efficiency for Space Age quality mechanics.

Train Throughput Calculator

INSTANT

Compute train network throughput between stations given train composition, fuel type, distance, inserter configuration, and signal spacing. Returns round-trip time breakdown and bottleneck identification.

THE DIFFERENCE

What changes

WITHOUT SAVECRAFT
YOU My factory feels slow. What's wrong with it?
AI Common causes are belt throughput, inserter speed, or not enough assemblers. Check that your belts aren't backed up and consider upgrading to fast inserters. Adding more machines usually helps!

A checklist of maybes. It has never seen your factory.

FACTORY HEALTH -- REAL DIAGNOSIS
YOU |

The factory health module, run on your save's measured rates.

HOW YOU USE IT

An engineer on call

Diagnosis from your rates, routes from the tech tree, ratios from the recipes.

* FACTORY DOCTOR
YOU What do I fix first?
AI Steel. Producing at three percent of consumption blocks four downstream items -- and your iron surplus of +1,960 a minute means the fix is furnaces, not mining. The copper cable gap is one machine. Everything else is noise until those two are done.
= SCIENCE PLANNER
YOU How far am I from Artillery?
AI Seven technologies and about 12h 30m of research time at your current labs -- you've already completed 172. The path runs through calcite processing, tungsten carbide, and the foundry before artillery itself. Want the full ordered list with science pack costs?
+ POWER PLANNER
YOU I need 100 more megawatts. Steam, solar, or nuclear?
AI The power calculator sizes all three from the game's numbers -- boiler-to-engine ratios for steam, panel and accumulator counts for solar, reactor layouts for nuclear -- with fuel consumption per option so you can price the ongoing cost, not just the build.
FROM SAVE TO DIAGNOSIS

Three steps to a factory that confesses.

The mod exports; the daemon pushes; the calculators do recipe math.

Install mod + daemon

The Savecraft Export mod from the Factorio mod portal, plus the Savecraft daemon watching script-output. One-time setup.

Play. Save. Done.

Every save exports production rates, power, science progress, evolution, and more -- structured, not screenshots.

Ask the hard questions

"What's my bottleneck?" runs the diagnosis. Ratios, oil splits, train throughput, and quality odds come from the game's own data.

METHODOLOGY

We show our work

Your measured rates, the game's real recipes.

Your save's measured rates The diagnosis reads production and consumption rates the game itself recorded in your save -- not estimates, and never a guess about what your factory 'probably' looks like.
The game's data files Recipes, technologies, machine speeds, module effects, and quality math are generated from Factorio's own data, per game version. Ratio answers match what the assembler tooltip would tell you.
Honest edges Vanilla and official content only for now -- modded recipes aren't reflected. Modded factory state still surfaces in your save's sections. When this changes, this page changes.

The factory must grow.

Works with Claude and ChatGPT. Install the mod and your next save gets diagnosed.

ADD FACTORIO