How we test our tools

Every number our tools give you comes from a method we can show you. These pages explain how the Commander Bracket Calculator is tested, what changed in each engine version, and where its secondary scores come from.

Bracket calculator validation report

How we measure the calculator against decks whose brackets were set by people, not software: the decklists, the labels, how often the calculator matches them, and where it is weakest.

Engine changelog

Every version of the bracket engine, what changed, and which decks a change moved.

How the salt score works

What the salt score on your results means, where the ratings come from, and why salt never changes your bracket.

Sources and corrections

Card data comes from Scryfall and rules from Wizards of the Coast’s own announcements. Our editorial policy explains how we check claims and keeps a dated log of corrections.