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Use valid values for ARIA attributes — measured AI agent skill | DecimalAI

thedaviddias/aria-valid-attr-value

SkillScore100Maintained

Use when reviewing rendered HTML, interactive components, or design-system patterns related to Use valid values for ARIA attributes. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.

by thedaviddias

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Frontend / UI pack

decimalai skills pull thedaviddias-aria-valid-attr-value

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/thedaviddias-aria-valid-attr-value/SKILL.md

Raw file: /s/thedaviddias-aria-valid-attr-value/SKILL.md ↗ · machine-readable summary at /s/thedaviddias-aria-valid-attr-value.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 3d ago

Yes — +5% lift · at higher cost+29% tokens0% turns100% of whole cases pass with skill (22/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-01	✗→✓	▲ Improved	48%	0%
case-06	✓→✓	＝ Same ✓	0%	0%
case-07	✓→✓	＝ Same ✓	40%	0%
case-12	✓→✓	＝ Same ✓	31%	0%
case-02	✓→✓	＝ Same ✓	24%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

thedaviddias / front-end-checklist

skills/aria-valid-attr-value/SKILL.md

View on GitHub ↗

Imported 8/3/2026Version v1Bundled 1 file

Skill contents

references/

SKILL.md

Use valid values for ARIA attributes

Invalid attribute values cause ARIA properties to be ignored or misinterpreted by assistive technologies, leading to a broken or confusing user experience.

Quick Reference

Ensure ARIA attribute values (like aria-expanded="true") are valid
Avoid using "yes/no" where "true/false" is required
Check that IDs referenced in aria-labelledby or aria-owns actually exist

Check

Validate that all ARIA attribute values conform to the allowed types (boolean, integer, ID list, etc.).

Fix

Correct any invalid ARIA attribute values to match the expected format defined in the ARIA specification.

Explain

Explain why precise attribute values are necessary for browsers to correctly communicate element states to assistive technology.

Code Review

Review the rendered markup and interactive states that affect Use valid values for ARIA attributes. Flag exact elements, roles, labels, focus behavior, or keyboard interactions that violate the rule, and note how to verify the fix with browser accessibility tooling or assistive tech.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/accessibility/aria-valid-attr-value

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