Differentiator 03
Why you can trust the output.
Accessibility tooling has a credibility problem: confident output, unverifiable claims. Coverli's methodology is built to make an unverifiable claim structurally impossible.
Deterministic first
Mechanical checks run before any model pass. They are exact, repeatable, and cost nothing — and they secure the findings that never needed judgment in the first place.
Expert lenses second
What remains is examined through structured lenses — structure and text alternatives; keyboard, focus and dynamic behavior; and more — each one a specialist's line of questioning rather than a rule list.
The evidence rule
A finding must quote your code at file-and-line. If it cannot be quoted, it cannot be reported. That single constraint removes speculation and invented code paths.
A published severity rubric
Blocker, serious, moderate, and minor are defined in writing and applied consistently. The same defect gets the same severity on every run, on every repository.
Honest coverage
Every report states exactly what was examined — components, stories, and lenses — and says plainly when a verdict reflects a partial audit rather than the whole project.
Corroboration where it exists
Where an approved screen-reader transcript backs a finding, it is attached and labelled test-corroborated. Where it does not, we say so instead of implying it.