aria-authoring-patterns SKILL.md skillA
aria-authoring-patterns from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add testland/qa/aria-authoring-patterns@git:20260813.84b37f4Pins git:20260813.84b37f4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- testland/qa
- Path
plugins/qa-accessibility/skills/aria-authoring-patterns/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260813.84b37f4, committed Aug 13, 2026
- First version recorded
- Jun 11, 2026
- Size
- 13,679 bytes
- Repository stars
- 11
- License
- MIT
Reference for the W3C ARIA Authoring Practices Guide (APG) - covers the 31 canonical interactive-widget patterns (Combobox, Dialog, Menu, Tabs, Tree, etc.), their required ARIA roles and states, the keyboard-interaction model per pattern, and the canonical-violations to watch for. Use when authoring a custom interactive widget that doesn't have a native HTML equivalent, or when reviewing one for ARIA correctness.
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
# aria-authoring-patterns ## Overview The W3C ARIA Authoring Practices Guide (APG) is the canonical reference for **how** to build accessible custom widgets - patterns where native HTML doesn't have a single matching element ([apg-patterns][apg]). [apg]: https://www.w3.org/WAI/ARIA/apg/patterns/ The APG documents 31 patterns; each one specifies: - The required `role` attribute. - Required and optional `aria-*` states (e.g. `aria-expanded`, `aria-selected`, `aria-current`). - The full keyboard-interaction model (Tab / Arrow keys / Enter / Escape / Home / End / Type-ahead). - DOM structure conventions. - Common pitfalls. ## When to use - Authoring a custom widget (Combobox, Tabs, Tree, Carousel, etc.). - Reviewing a third-party UI library's component for ARIA correctness. - Adding ARIA to an existing widget that was hand-rolled without it. - Configuring assertions in `axe-a11y` (or its pa11y reference) to enforce per-pattern conventions. ## The first rule of ARIA The APG (and WAI more broadly) consistently emphasizes: > **No ARIA is better than bad ARIA.** Native HTML elements with > built-in semantics are preferred over custom widgets whenever > possible. …
Read the whole file at its exact version.
How to install
mdr add testland/qa/aria-authoring-patterns@sha256:c5c5d616400fc7e1The line at the top of this page pins the label git:20260813.84b37f4, 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.
[](https://markdownregistry.com/a/art_qrhddd3lrvb4rbp2)
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Versions
The registry has recorded 4 versions of this file, between Jun 11, 2026 and Aug 13, 2026, about one every 21 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260813.84b37f4 latest | 2026-08-13 | 84b37f4 | 13,679 B | A | view · diff |
| git:20260724.d4db756 | 2026-07-24 | d4db756 | 13,600 B | A | view · diff |
| git:20260706.4e1409c | 2026-07-06 | 4e1409c | 13,868 B | A | view · diff |
| git:20260611.007ae6c | 2026-06-11 | 007ae6c | 13,885 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13679 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qrhddd3lrvb4rbp2 GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/aria-authoring-patterns GET https://markdownregistry.com/api/v1/blob/c5c5d616400fc7e1e7d43e3974dced6af005a85936d3771757839aa25fcbb1c7
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.