Web Interface Guidelines Reviewer
vercel-labs/openreview
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my…
WCAG 2.1/2.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬. An agent skill from revfactory/harness-100.
Install Wcag Checker
$ npx skills add revfactory/harness-100 --skill wcag-checker -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install revfactory/harness-100 wcag-checker --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .claude/skills/wcag-checker && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .claude/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checkerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add revfactory/harness-100 --skill wcag-checker -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install revfactory/harness-100 wcag-checker --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .agents/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .agents/skills/wcag-checker && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .agents/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill wcag-checker -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install revfactory/harness-100 wcag-checker --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .cursor/skills/wcag-checker && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .cursor/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/revfactory/harness-100.git --path ko/36-design-system/.claude/skills/wcag-checker--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add revfactory/harness-100 --skill wcag-checker -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install revfactory/harness-100 wcag-checker --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .gemini/skills/wcag-checker && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .gemini/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install revfactory/harness-100 wcag-checkerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add revfactory/harness-100 --skill wcag-checker -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .github/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .github/skills/wcag-checker && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .github/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill wcag-checker -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install revfactory/harness-100 wcag-checker --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/ko/36-design-system/.claude/skills/wcag-checker .opencode/skills/wcag-checker && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "wcag-checker" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/36-design-system/.claude/skills/wcag-checker into .opencode/skills/wcag-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "wcag-checker", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
wcag-checker- GitHub stars
- 1.3k
- Token cost
- ~991 tokens
- SKILL.md length
- 311 words
- Files
- 1
- Skills in repo
- 464
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
WCAG 2.1/2.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬. An agent skill from revfactory/harness-100.
- Works in 4 steps: 인식 가능 (Perceivable) → 운용 가능 (Operable) → 이해 가능 (Understandable) → …
- Tasks that involve Accessibility
- SKILL.md covers 대상 에이전트, WCAG 2.1 AA 필수 기준 체크리스트, 대비비 계산 공식 and 컴포넌트별 ARIA 패턴, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Wcag Checker is an agent skill from revfactory/harness-100. WCAG 2.1/2.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬. '접근성 검증해줘', 'WCAG 체크', '대비비 확인', 'ARIA 검사', '키보드 접근성', '스크린리더 테스트' 등 접근성 검증이 필요할 때 사용한다. 단, 실제 보조기기(JAWS/NVDA) 실행, 법적 소송 자문, 접근성 인증 발급은 이 스킬의 범위가 아니다.
Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Accessibility. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Accessibility
Example prompts
- “WCAG 체크”
- “ARIA 검사”
- “/wcag-checker”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are html and markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Wcag Checker loads about 991 tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 311 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 311 words, ~991 tokens.
Download SKILL.mdSave it as
.claude/skills/wcag-checker/SKILL.md (or your agent's skills folder).- name
- wcag-checker
- description
- WCAG 2.1/2.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬. '접근성 검증해줘', 'WCAG 체크', '대비비 확인', 'ARIA 검사', '키보드 접근성', '스크린리더 테스트' 등 접근성 검증이 필요할 때 사용한다. 단, 실제 보조기기(JAWS/NVDA) 실행, 법적 소송 자문, 접근성 인증 발급은 이 스킬의 범위가 아니다.
WCAG Checker — 접근성 검증 체크리스트 + 도구
a11y-auditor 에이전트의 접근성 검증 역량을 강화하는 도메인 지식 스킬.
대상 에이전트
- a11y-auditor — 이 스킬의 체크리스트와 공식을 사용하여 컴포넌트별 접근성을 검증한다
- component-developer — 개발 시 접근성 요구사항을 사전 확인한다
WCAG 2.1 AA 필수 기준 체크리스트
1. 인식 가능 (Perceivable)
| 기준 | 항목 | 검증 방법 | 심각도 |
|---|---|---|---|
| 1.1.1 | 비텍스트 콘텐츠에 대체 텍스트 | img에 alt, 장식 이미지에 alt="" | P0 |
| 1.3.1 | 정보와 관계 프로그래밍 방식 전달 | 시맨틱 HTML, ARIA role | P0 |
| 1.3.2 | 의미 있는 순서 | DOM 순서 = 시각적 순서 | P1 |
| 1.4.1 | 색상만으로 정보 전달 금지 | 아이콘/텍스트 보조 표시 | P0 |
| 1.4.3 | 대비비 최소 4.5:1 (일반), 3:1 (대형) | 대비비 공식 계산 | P0 |
| 1.4.4 | 200% 확대 시 콘텐츠 손실 없음 | rem/em 단위 사용 | P1 |
| 1.4.11 | 비텍스트 UI 대비비 3:1 이상 | 포커스 링, 테두리, 아이콘 | P0 |
2. 운용 가능 (Operable)
| 기준 | 항목 | 검증 방법 | 심각도 |
|---|---|---|---|
| 2.1.1 | 키보드 접근 가능 | Tab/Enter/Space/Esc/Arrow 동작 | P0 |
| 2.1.2 | 키보드 트랩 없음 | 모든 요소에서 Tab out 가능 | P0 |
| 2.4.3 | 포커스 순서 논리적 | tabindex 양수 금지 | P0 |
| 2.4.7 | 포커스 시각적 표시 | :focus-visible 스타일 | P0 |
3. 이해 가능 (Understandable)
| 기준 | 항목 | 검증 방법 | 심각도 |
|---|---|---|---|
| 3.1.1 | 페이지 언어 명시 | <html lang="ko"> | P0 |
| 3.2.1 | 포커스 시 컨텍스트 변경 없음 | focus만으로 페이지 이동 금지 | P0 |
| 3.3.1 | 오류 식별 텍스트 제공 | 색상 외 텍스트 에러 메시지 | P0 |
| 3.3.2 | 레이블 또는 지시문 | <label> 연결, placeholder만 사용 금지 | P0 |
4. 견고 (Robust)
| 기준 | 항목 | 검증 방법 | 심각도 |
|---|---|---|---|
| 4.1.2 | 이름, 역할, 값 프로그래밍 방식 | ARIA 속성 정확성 | P0 |
| 4.1.3 | 상태 메시지 보조기술 전달 | aria-live, role="status" | P1 |
대비비 계산 공식
상대 휘도 (Relative Luminance)
L = 0.2126 * R_lin + 0.7152 * G_lin + 0.0722 * B_lin
여기서:
- sRGB를 0~1로 정규화 (예: #FF → 1.0)
- C_lin = C_srgb <= 0.04045 ? C_srgb/12.92 : ((C_srgb+0.055)/1.055)^2.4대비비 공식
CR = (L_lighter + 0.05) / (L_darker + 0.05)
AA 기준:
- 일반 텍스트 (< 18pt 또는 < 14pt bold): CR >= 4.5
- 대형 텍스트 (>= 18pt 또는 >= 14pt bold): CR >= 3.0
- UI 컴포넌트/그래픽: CR >= 3.0
AAA 기준:
- 일반 텍스트: CR >= 7.0
- 대형 텍스트: CR >= 4.5대비비 미충족 시 자동 조정
1. 현재 전경색과 배경색의 대비비 계산
2. CR < 목표 시:
a. HSL 색공간에서 L만 조정하여 색조 유지
b. L_target 역산: (L_fg + 0.05) / target_CR - 0.05
3. 조정 전후 색상 함께 보고컴포넌트별 ARIA 패턴
Button
<button type="button" aria-label="닫기" aria-pressed="false">
<svg aria-hidden="true">...</svg>
</button>Modal/Dialog
<div role="dialog" aria-modal="true" aria-labelledby="title-id">
<h2 id="title-id">제목</h2>
<!-- 포커스 트랩: Tab은 dialog 내부에서만 순환 -->
<!-- Esc로 닫기, 닫힐 때 트리거 요소로 포커스 복귀 -->
</div>Select/Combobox
<div role="combobox" aria-expanded="false" aria-haspopup="listbox">
<input aria-autocomplete="list" aria-controls="listbox-id" />
<ul id="listbox-id" role="listbox">
<li role="option" aria-selected="true">옵션 1</li>
</ul>
</div>Tab
<div role="tablist" aria-label="설정">
<button role="tab" aria-selected="true" aria-controls="panel-1">탭1</button>
</div>
<div role="tabpanel" id="panel-1" aria-labelledby="tab-1">내용</div>키보드 인터랙션 매트릭스
| 컴포넌트 | Tab | Enter | Space | Esc | Arrow | Home/End |
|---|---|---|---|---|---|---|
| Button | 포커스 | 클릭 | 클릭 | - | - | - |
| Checkbox | 포커스 | 토글 | 토글 | - | - | - |
| Radio | 그룹포커스 | 선택 | 선택 | - | 순환 | 처음/끝 |
| Select | 포커스 | 열기 | 열기 | 닫기 | 항목이동 | 처음/끝 |
| Modal | 내부순환 | - | - | 닫기 | - | - |
| Tab | 탭포커스 | 활성화 | 활성화 | - | 탭이동 | 처음/끝 |
| Menu | 포커스 | 열기/실행 | 열기/실행 | 닫기 | 항목이동 | 처음/끝 |
| Slider | 포커스 | - | - | - | 값조정 | 최소/최대 |
검증 보고서 템플릿
## 접근성 검증 보고서
### 요약
- 검증 수준: WCAG 2.1 AA
- P0 이슈: N건 (릴리스 차단)
- P1 이슈: N건 (권고)
### P0 이슈 (필수 수정)
| # | 컴포넌트 | 기준 | 문제 | 수정 방안 |
### 대비비 매트릭스
| 전경 | 배경 | 대비비 | AA일반 | AA대형 |
### 키보드 테스트 결과
| 컴포넌트 | Tab | Enter | Space | Esc | Arrow | 결과 |© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in ko/36-design-system/.claude/skills/wcag-checker of revfactory/harness-100.
Open the folder on GitHubat commit 8e8d35c
Compare with similar skills
Wcag Checker next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Wcag Checker this skillrevfactory/harness-100 | 1.3k | — | ~991 | Automated safety check: Pass | Apache-2.0 | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 97 repos | ~308 | Automated safety check: Pass | None | |
| Accessibility Reviewmarkmead/hyperui | 12k | 1 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Web Animation DesignbaptisteArno/typebot.io | 11k | 2 repos | ~2.7k | Automated safety check: Pass | Custom licence | |
| Accessibility Fixeribelick/ui-skills | 9.5k | 4 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Wcag Audit PatternsvmDeshpande/ai-agent-automation | 178 | 11 repos | ~610 | Automated safety check: Pass | Apache-2.0 |
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- Official
Accessibility Review
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Guides easing, timing and animation choices for UI motion, based on a web animation course, and reviews existing animations in a before-and-after table.
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Audits and fixes HTML accessibility problems such as ARIA labels, keyboard navigation, focus management, contrast and form errors with minimal changes.
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Categories
Questions about Wcag Checker
What does Wcag Checker do?
WCAG 2.1/2.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬. An agent skill from revfactory/harness-100. Wcag Checker is an agent skill from revfactory/harness-100.2 접근성 검증 체크리스트와 자동 감사 방법론을 제공하는 스킬.
When should I use Wcag Checker?
Wcag Checker fits situations like: tasks that involve Accessibility.
How do I install Wcag Checker in Claude Code?
Run `npx skills add revfactory/harness-100 --skill wcag-checker -a claude-code`. Or copy the skill folder (ko/36-design-system/.claude/skills/wcag-checker in revfactory/harness-100) into .claude/skills/wcag-checker in your project. Claude Code loads it when a task matches its description.
How do I install Wcag Checker in Codex?
Run `npx skills add revfactory/harness-100 --skill wcag-checker -a codex`. Or copy the skill folder (ko/36-design-system/.claude/skills/wcag-checker in revfactory/harness-100) into .agents/skills/wcag-checker in your project. Codex loads it when a task matches its description.
Can I use Wcag Checker in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill wcag-checker -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/wcag-checker, .gemini/skills/wcag-checker, .github/skills/wcag-checker and .opencode/skills/wcag-checker in your project.
What does Wcag Checker need to run?
SKILL.md names no scripts, command-line tools or credentials: Wcag Checker is instructions for the agent only.
Does Wcag Checker access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Wcag Checker safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Wcag Checker use?
Wcag Checker is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Wcag Checker use?
About 991 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Wcag Checker?
Skills that share tags, products or a category with Wcag Checker: Web Interface Guidelines Reviewer (vercel-labs/openreview, 1.7k stars), Accessibility Review (markmead/hyperui, 12k stars), Web Animation Design (baptisteArno/typebot.io, 11k stars) and Accessibility Fixer (ibelick/ui-skills, 9.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Wcag Checker?
revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,295 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.
Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.