How Albion Codex Calculates

Three sources, each answering a different question. Recipes and formulas come from the game. Prices come from the market. Neither is guessed at or typed in by hand.

The third one is why our coverage is wider than the public API alone. Players who run the Codex Client contribute the prices their own game client already receives when they browse a market. As of 30 August 2026 that network holds 163,779 price captures and 803,281 historical price points from 155 contributors. It fills gaps the public API leaves - an item nobody has reported to AODP may still have been seen by a Codex Client. We are not the only Albion project that captures its own data, but the combination of both sources is what widens the coverage you see here.

A crafting calculator is only worth the accuracy of its return-rate and focus maths. Ours are validated three ways, in increasing order of what they prove.

Against the game itself. The focus and return-rate models were checked by performing the actual crafts in game and comparing the numbers the client showed against what the engine predicts. That is how the food and potion focus model was confirmed, how the gear model was corrected, and how questions a formula cannot answer were settled - whether an enchantment material is returned by the return rate, for instance, is a fact about the game that only a real craft can establish. Several of our own assumptions were proved wrong that way and changed.

Against published reference tables. The hideout production bonus is matched across every zone-quality and power-level combination, and the refining focus costs reproduce the community "max level crafter" table exactly.

Continuously, by test. A verification harness re-derives 13 formula cases on every run, alongside 1,633 automated tests across 109 files. Figures printed in our guides are not typed in: the rates in the return rate guide are re-derived from the same function the calculator calls, and the refining table in the focus budget guide is generated by the refining calculator itself. If the engine changes and a guide does not, the build fails.

Most items on this site are priced from real trades. Some are not - an item nobody has listed recently has no price, and the honest answer is often a dash rather than a number. Where we can model one, it is labelled Est. and is never mixed into observed data.

Those estimates are scored rather than assumed. A daily backtest draws a random, tier-stratified sample from the 1,626-item craftable universe, hides the most recent day, predicts it blind, and compares against what actually happened. The most recent run scored a 11.2% median error, with 73.1% of predictions inside 25% (175 scored items). Each estimate also carries a confidence level, and the confidence ordering is checked in the same run - a high-confidence estimate really is more accurate than a low one, or the report says so.

The gaps matter as much as the coverage, and most tools in this space do not mention theirs.

• Directional demand is not published. The market API reports top-of-book prices and a single undirected trade count, so nobody - us included - can tell you how much of an item was sold into buy orders against bought from sell orders.
• Bid and ask history does not exist. Price history is a traded average only, so charts show what changed hands, not what was being asked.
• Capture coverage follows players. Our network sees a market when somebody visits it, so quieter servers and cities are thinner. Where data is thin we say so on the number rather than smoothing over it.
• Black Market profit assumes selling into buy orders. That is the reliable case. Listing into the Black Market can also fill, and we hold no record of what those listings achieve, so we do not model them.
• Prices are a snapshot, not a promise. Every price on the site carries its age. A profit figure calculated on a three-day-old price is a three-day-old profit figure.

Market data is provided by the Albion Online Data Project under the Open Database License. Item images and game data are property of Sandbox Interactive GmbH. Albion Codex is a fan-made project and is not affiliated with or endorsed by Sandbox Interactive.

Found something that looks wrong? That is genuinely useful - several corrections on this site started as a player saying a number did not match their game. The Discord is the fastest way to reach us.