How do I install the Aria Valid Attr Value skill?

Run npx skillmds@latest add thedaviddias/aria-valid-attr-value in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Aria Valid Attr Value safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Aria Valid Attr Value?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Aria Valid Attr Value free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Aria Valid Attr Value?

thedaviddias (@thedaviddias) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Aria Valid Attr Value by thedaviddias

Name: Aria Valid Attr Value
Author: thedaviddias

Aria Valid Attr Value

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.

thedaviddias a25034f 2 files · 4.0 KB Updated Sep 17, 2026

File contents

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

Frequently asked questions