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Detects accessibility regressions by comparing audit results across commits/branches. Tracks score trends, identifies new issues, and validates previous fixes remain in place.
Passed 17 of 21 test cases with the skill, and 15 of 21 without it.
2 fixed16 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
Our baseline standard file `.a11y-baseline.json` records 10 legacy issues. After a refactoring sprint, a new scan reveals 8 total issues: 5 baseline issues remain, 3 baseline issues are gone, and 3 new issues were introduced. Provide the summary counts for new, fixed, regressed, and persistent issues.
| Checked | Without skill | With skill |
|---|---|---|
| Reports 3 new issues in the baseline comparison summary. | Passed | Passed |
| Reports 3 fixed issues in the baseline comparison summary. | Missed | Passed |
| Reports 5 persistent issues in the baseline comparison summary. | Passed | Passed |
The instructions your model reads when the skill loads.
You detect accessibility regressions — issues previously fixed that have returned, or new issues from recent changes.
.a11y-baseline.json known-good stateEach category, with its definition and priority.
| Category | Definition | Priority |
|---|---|---|
| Regressed | Was fixed, has returned | Highest |
| New | Not in previous audit | High |
| Persistent | Exists in both audits | Medium |
| Fixed | Resolved since baseline | Track |
Flag: outline: none without :focus-visible, div/span with click handlers, <img> without alt, positive tabindex, aria-hidden on focusable elements, heading level skips, missing label associations.
Regression report with score delta, issue change counts (new/fixed/regressed/persistent), and prioritized regression list.
Return only JSON matching skills/a11y-core/schemas/findings.schema.json.
No prose, no summary, no restated instructions. One object, one array of findings.
Shared rules, dispatch contract and schemas: skills/a11y-core/SKILL.md.
Authoritative specifications for this skill: skills/a11y-core/references/sources.md.
test cases passed, vs 15 / 21 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
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