Evaluate

Evaluate

Evaluate "$ARGUMENTS" for accessibility issues. Run automated and manual checks, discover barriers, and map each issue to specific WCAG success criteria.

Prerequisites

Read .metapowers/accessibility/$ARGUMENTS/01-scope.md. If this file does not exist, tell the user:

> Phase 1 (Scope) has not been completed for "$ARGUMENTS". Run /accessibility:scope $ARGUMENTS first, or use --skip-checks to bypass.

If --skip-checks is present in $ARGUMENTS, skip this check and log to .metapowers/accessibility/$ARGUMENTS/skip-log.md.

Process

1. Read context files:

• Read .metapowers/accessibility/$ARGUMENTS/01-scope.md for audit scope and target pages
• Read plugins/accessibility/shared/wcag-21-aa-criteria.md for the full criteria reference

1. Automated evaluation:

• Read the source code of the target pages/components
• Check for: missing alt text, missing form labels, heading hierarchy violations, missing ARIA attributes, color contrast issues, missing lang attribute, keyboard trap risks

1. Manual evaluation:

• Trace keyboard navigation flow — can all interactive elements be reached and operated?
• Check focus visibility — is focus indicator visible on every interactive element?
• Check reading order — does DOM order match visual order?
• Check form error handling — are errors identified and described in text?
• Check dynamic content — are updates announced via ARIA live regions?

1. Map each issue to WCAG criteria:

• For each issue found, identify the specific WCAG success criterion violated
• Classify severity: Critical (blocks access), Major (significant barrier), Minor (inconvenience)
• Note the location (file, line, component)

1. Write the artifact to .metapowers/accessibility/$ARGUMENTS/02-evaluate.md with sections:

• Issues Found — each issue with WCAG mapping, severity, location
• Conformance Status — per-principle pass/fail summary
• Critical Barriers — issues that completely block access
• Positive Findings — what's already working well

Output

The evaluation results written to .metapowers/accessibility/$ARGUMENTS/02-evaluate.md. Present a summary to the user highlighting:

• Total issues found by severity
• Critical barriers requiring immediate attention
• WCAG principles with most violations

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: bromso
• Source: bromso/metapowers
• License: MIT
• Homepage: https://bromso.github.io/metapowers/

Install and usage instructions live in the source repository linked above.