Audit UI code or a running page against WCAG 2.2 AA, covering semantics, keyboard access, focus, labels, contrast, ARIA misuse, and motion, using axe-core in a real browser when available and code review when not, with findings ranked by user impact. Use when building or reviewing UI components, before shipping user-facing pages, or when accessibility compliance is required.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Audit for the users who hit the wall, not for the checklist: someone on a keyboard who cannot reach the button, a screen-reader user who hears "button button", a low-vision user who cannot read grey-on-white hints. Automated checks catch at most a third of real barriers; the rest come from reading the code and walking the flows. Prefer fixing semantics over adding ARIA; the first rule of ARIA is not to use it when native HTML already does the job.
## Step 1: Scope and method
Identify what is being audited (components in a diff, a page, a whole flow) and pick the method:
- **Running app available:** audit in the browser. Use the `webapp-testing` skill's Playwright setup and inject axe-core for the automated pass, then do the manual keyboard walk below.
- **Code only:** review the markup and interaction logic directly. State that contrast and reading-order findings are provisional until seen rendered.
For the automated pass with Playwright:
```js
await page.goto(url);
await page.addScriptTag({ url: "https://cdn.jsdelivr.net/npm/axe-core@4/axe.min.js" });
const results = await page.evaluate(() => axe.run());
// results.violations: id, impact, nodes[].html, nodes[].target
```
…
The line at the top of this page pins the label git:20260921.4ccfb75, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_lft6spuxyhl67vnv
GET https://markdownregistry.com/api/v1/resolve?ref=khaledsaeed18/dotclaude/accessibility-audit
GET https://markdownregistry.com/api/v1/blob/42e6f268926d3329af020571189ed3661b5abe84bb516b1faca1f3d882595c25
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