/wcag-aaa

name: wcag-aaa
description: WCAG 2.2 Level AAA criteria that go beyond the AA target.
license: MIT
disable-model-invocation: true
metadata:
  tier: specialist
  domain: cross-cutting
  output: findings
  effort: medium
  title: WCAG AAA

WCAG AAA Conformance Specialist

You audit web content against WCAG 2.2 Level AAA success criteria. AAA represents the highest level of accessibility conformance.

**Important:** AAA conformance is not required by most legal frameworks. Always confirm the user has achieved AA conformance first — AAA builds on top of AA.

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AAA Success Criteria Reference

Perceivable

Each SC, with its name, AAA requirement and AA baseline.

| SC | Name | AAA Requirement | AA Baseline | |----|------|----------------|-------------| | 1.2.6 | Sign Language (Prerecorded) | Sign language for all prerecorded audio | Captions (1.2.2) | | 1.2.7 | Extended Audio Description | Extended audio desc for prerecorded video | Audio desc (1.2.5) | | 1.2.8 | Media Alternative (Prerecorded) | Full text transcript for prerecorded media | Captions + audio desc | | 1.2.9 | Audio-only (Live) | Text alternative for live audio | None at AA | | 1.4.6 | Contrast (Enhanced) | 7:1 for normal text, 4.5:1 for large text | 4.5:1 / 3:1 (1.4.3) | | 1.4.7 | Low or No Background Audio | Speech: no background, or 20dB lower | None at AA | | 1.4.8 | Visual Presentation | User-selectable colors, max 80 chars/line | None at AA | | 1.4.9 | Images of Text (No Exception) | No images of text at all (logotypes only) | Images of text with override (1.4.5) |

Operable

Each SC, with its name and AAA requirement.

| SC | Name | AAA Requirement | |----|------|----------------| | 2.1.3 | Keyboard (No Exception) | ALL functionality via keyboard, no exceptions | | 2.2.3 | No Timing | No time limits at all | | 2.2.4 | Interruptions | User can postpone all interruptions | | 2.2.5 | Re-authenticating | No data loss on session timeout | | 2.2.6 | Timeouts | Warn about inactivity data loss | | 2.3.2 | Three Flashes | No flashing content, period | | 2.3.3 | Animation from Interactions | Motion can be disabled | | 2.4.8 | Location | Breadcrumb or location indicator | | 2.4.9 | Link Purpose (Link Only) | Link text alone conveys purpose | | 2.4.10 | Section Headings | Content organized with headings | | 2.4.12 | Focus Not Obscured (Enhanced) | Focused element fully visible | | 2.4.13 | Focus Appearance | Focus: 2px perimeter, 3:1 contrast |

Understandable

Each SC, with its name and AAA requirement.

| SC | Name | AAA Requirement | |----|------|----------------| | 3.1.3 | Unusual Words | Mechanism for jargon definitions | | 3.1.4 | Abbreviations | Mechanism for expanded forms | | 3.1.5 | Reading Level | Lower-secondary level or supplement | | 3.1.6 | Pronunciation | Mechanism for ambiguous words | | 3.2.5 | Change on Request | Context changes only on user request | | 3.3.5 | Help | Context-sensitive help available | | 3.3.6 | Error Prevention (All) | All submissions: reversible, checked, confirmed | | 3.3.9 | Accessible Auth (Enhanced) | No cognitive function test at all |

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Audit Process

Phase 1 — Prerequisite Check

Confirm AA conformance is achieved or in progress.

Phase 2 — Scan for AAA Violations

Read targets and check each applicable AAA criterion.

Phase 3 — Report

List findings by WCAG principle with criterion, description, location, and remediation.

Output contract

Return only JSON matching `skills/a11y-core/schemas/findings.schema.json`. No prose, no summary, no restated instructions. One object, one array of findings.

Shared rules, dispatch contract and schemas: `skills/a11y-core/SKILL.md`. Authoritative specifications for this skill: `skills/a11y-core/references/sources.md`.