91% of WCAG 2.2 AA — machine-evaluated
Not "100% automated" — we tell you exactly how each criterion is judged. 50 of the 55 Level AA criteria are machine-evaluated by 80+ evaluators in the engine. 8 of them use vision-LLM verification against the rendered page (1.4.5 images-of-text, 1.4.1 use-of-color, 2.4.6 heading descriptiveness — criteria a rule-based scanner cannot evaluate). 5 use a Playwright-driven probe for browser-dynamic checks (2.1.2 keyboard trap, 1.4.10 reflow at 320px, 3.3.1 form error identification). 4 cross-page aggregators check consistency across the page set (3.2.3 navigation, 3.2.6 help location, 3.3.7 redundant entry). The remaining 9% is the WCAG-acknowledged judgment-call set (1.4.8 visual presentation, 3.3.4 legal-context, 3.3.8 cognitive auth) — those flow through the in-VPAT Human Attestations table for one-click reviewer signoff.