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…
Reference data, not a reviewer. An agent skill from Community-Access/accessibility-agents.
Install Kb Media Accessibility
$ npx skills add Community-Access/accessibility-agents --skill kb-media-accessibility -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Community-Access/accessibility-agents kb-media-accessibility --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/Community-Access/accessibility-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/kb-media-accessibility .claude/skills/kb-media-accessibility && 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 "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .claude/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibilityType 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 Community-Access/accessibility-agents --skill kb-media-accessibility -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Community-Access/accessibility-agents kb-media-accessibility --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/kb-media-accessibility .agents/skills/kb-media-accessibility && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .agents/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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 Community-Access/accessibility-agents --skill kb-media-accessibility -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Community-Access/accessibility-agents kb-media-accessibility --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/kb-media-accessibility .cursor/skills/kb-media-accessibility && 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 "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .cursor/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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/Community-Access/accessibility-agents.git --path skills/kb-media-accessibility--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 Community-Access/accessibility-agents --skill kb-media-accessibility -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Community-Access/accessibility-agents kb-media-accessibility --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/kb-media-accessibility .gemini/skills/kb-media-accessibility && 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 "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .gemini/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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 Community-Access/accessibility-agents kb-media-accessibilityInstalls 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 Community-Access/accessibility-agents --skill kb-media-accessibility -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/kb-media-accessibility .github/skills/kb-media-accessibility && 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 "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .github/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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 Community-Access/accessibility-agents --skill kb-media-accessibility -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Community-Access/accessibility-agents kb-media-accessibility --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/kb-media-accessibility .opencode/skills/kb-media-accessibility && 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 "kb-media-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/kb-media-accessibility into .opencode/skills/kb-media-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kb-media-accessibility", 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
kb-media-accessibility- GitHub stars
- 423
- Token cost
- ~1.7k tokens
- SKILL.md length
- 627 words
- Files
- 2
- Skills in repo
- 108
- Repo updated
- First seen
- Licence
- MIT
At a glance
Reference data, not a reviewer. An agent skill from Community-Access/accessibility-agents.
- Tasks that involve Accessibility
- SKILL.md covers Media Accessibility Skill, WCAG 1.2 Time-Based Media…, Caption File Formats and Caption Quality Guidelines, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Kb Media Accessibility is an agent skill from Community-Access/accessibility-agents. Reference data, not a reviewer. Video/audio accessibility: WebVTT/SRT/TTML captions, audio descriptions, accessible media player ARIA, and WCAG 1.2.x compliance.
Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Frontend & Design, covering Accessibility. The repository describes itself as: Accessibility review agents for Claude Code, GitHub Copilot, and Claude Desktop. Eleven specialists that enforce WCAG 2.2 AA compliance so AI coding tools stop generating… The licence is MIT.
When your agent uses it
- Tasks that involve Accessibility
Example prompts
- “/kb-media-accessibility”
What it can do on your machine
Read from SKILL.md and the folder at commit decf6ba. 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).
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
Kb Media Accessibility loads about 1.7k tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 627 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 Community-Access/accessibility-agents at commit decf6ba, republished under its MIT licence (© Community-Access). 627 words, ~1,653 tokens.
Download SKILL.mdSave it as
.claude/skills/kb-media-accessibility/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- kb-media-accessibility
- description
- Reference data, not a reviewer. Video/audio accessibility: WebVTT/SRT/TTML captions, audio descriptions, accessible media player ARIA, and WCAG 1.2.x compliance.
- license
- MIT
- disable-model-invocation
- true
- user-invocable
- false
- metadata.tier
- reference
- metadata.domain
- cross-cutting
- metadata.output
- none
- metadata.effort
- low
- metadata.title
- Media Accessibility
Media Accessibility Skill
Reference data for video, audio, and streaming media accessibility. Used by media-accessibility agent and any web agent encountering <video> or <audio> elements.
WCAG 1.2 Time-Based Media Criteria
Each SC, with its level, requirement and test.
| SC | Level | Requirement | Test |
|---|---|---|---|
| 1.2.1 | A | Audio-only/video-only: provide text transcript or audio track | Transcript exists alongside media |
| 1.2.2 | A | Captions for prerecorded audio in video | Synchronized captions present |
| 1.2.3 | A | Audio description OR text alternative for prerecorded video | Description track or full transcript |
| 1.2.4 | AA | Captions for live audio in video | Real-time captioning active |
| 1.2.5 | AA | Audio description for prerecorded video | Description track present |
| 1.2.6 | AAA | Sign language for prerecorded audio | Sign language interpretation video |
| 1.2.7 | AAA | Extended audio description | Paused video for long descriptions |
| 1.2.8 | AAA | Media alternative for prerecorded video | Full text alternative document |
| 1.2.9 | AAA | Audio-only (live): text alternative | Real-time text transcript |
Caption File Formats
WebVTT (Web Video Text Tracks)
WEBVTT
00:00:01.000 --> 00:00:04.000
Welcome to the accessibility course.
00:00:04.500 --> 00:00:08.000
Today we'll cover caption best practices.
00:00:08.500 --> 00:00:12.000
<v Speaker 2>Let's start with file formats.Key rules:
- File must start with
WEBVTTheader - Timestamps:
HH:MM:SS.mmm --> HH:MM:SS.mmm - Speaker identification:
<v Speaker Name>Text - Maximum 2 lines per caption, 32 characters per line
- Minimum display time: 1 second
- Maximum display time: 7 seconds
SRT (SubRip Text)
1
00:00:01,000 --> 00:00:04,000
Welcome to the accessibility course.
2
00:00:04,500 --> 00:00:08,000
Today we'll cover caption best practices.Key rules:
- Sequential numbering starting at 1
- Timestamps use comma for milliseconds (not period)
- Blank line between entries
- No styling support (unlike WebVTT)
TTML (Timed Text Markup Language)
- XML-based, used in broadcast and streaming
- Supports styling, positioning, and region layout
- IMSC (Internet Media Subtitles and Captions) is the web profile
Caption Quality Guidelines
Each metric, with its requirement.
| Metric | Requirement |
|---|---|
| Accuracy | 99%+ word accuracy |
| Synchronization | Within 1 second of audio |
| Speaker identification | Required when 2+ speakers |
| Sound effects | Describe in brackets: [applause], [phone rings] |
| Music | Describe: [upbeat music], [dramatic orchestral score] |
| Caption rate | Maximum 200 words per minute (3 words/second) |
| Line length | Maximum 32 characters per line |
| Lines per caption | Maximum 2 lines |
| Placement | Bottom center default; move for on-screen text |
Audio Description
Audio description narrates visual information during pauses in dialogue.
Requirements:
- Describe: actions, scene changes, on-screen text, facial expressions relevant to plot
- Don't describe: obvious audio cues, subjective interpretations
- Timing: fit into natural pauses; for extended descriptions (1.2.7), video pauses automatically
- Voice: distinct from program audio, clear and neutral
HTML implementation:
<video controls>
<source src="video.mp4" type="video/mp4">
<track kind="captions" src="captions-en.vtt" srclang="en" label="English" default>
<track kind="descriptions" src="descriptions-en.vtt" srclang="en" label="English Audio Descriptions">
</video>Accessible Media Player ARIA Patterns
Show full SKILL.md (260 more words)Show less
Minimum Controls
Every media player must have keyboard-accessible controls for:
- Play/Pause (
role="button",aria-label="Play"/aria-label="Pause") - Volume (
role="slider",aria-label="Volume",aria-valuemin,aria-valuemax,aria-valuenow) - Seek/Progress (
role="slider",aria-label="Seek",aria-valuetext="2 minutes 30 seconds") - Captions toggle (
role="button",aria-pressed,aria-label="Toggle captions") - Fullscreen (
role="button",aria-label="Enter fullscreen"/aria-label="Exit fullscreen")
Live Region Announcements
<div aria-live="polite" class="sr-only" id="player-status">
<!-- Announce: "Playing", "Paused", "Video ended", "Captions on", "Captions off" -->
</div>Keyboard Shortcuts (Media Player Convention)
Each key, with its action.
| Key | Action |
|---|---|
| Space / Enter | Play/Pause |
| Left Arrow | Rewind 5 seconds |
| Right Arrow | Forward 5 seconds |
| Up Arrow | Volume up |
| Down Arrow | Volume down |
| M | Mute/Unmute |
| C | Toggle captions |
| F | Toggle fullscreen |
Transcript Best Practices
- Provide a full-text transcript adjacent to or linked from the media
- Include speaker identification, timestamps (optional but helpful), and non-speech audio
- Transcripts benefit deaf users, search engines, and users who prefer reading
- Interactive transcripts (click a line to jump to that point) are excellent UX
Live Captioning
- WCAG 1.2.4 (AA) requires captions for live audio in synchronized media
- Options: human captioner (CART), AI-powered auto-captioning, hybrid
- AI auto-captions alone rarely meet the 99% accuracy requirement — human review or correction is recommended
- WebSocket-based caption delivery for web: push text to a
<div aria-live="polite">container
Common Violations
Each issue, with its WCAG SC and severity.
| Issue | WCAG SC | Severity |
|---|---|---|
| No captions on prerecorded video | 1.2.2 | Critical |
| Auto-generated captions without review | 1.2.2 | Serious |
| No audio description for visual-only content | 1.2.5 | Serious |
| Inaccessible media player controls | 2.1.1, 4.1.2 | Critical |
| No keyboard access to play/pause | 2.1.1 | Critical |
| Autoplay without user control | 1.4.2 | Serious |
| Volume slider not keyboard-operable | 2.1.1 | Serious |
| No transcript for audio-only content | 1.2.1 | Critical |
| Captions poorly synchronized (>2s drift) | 1.2.2 | Moderate |
| Missing speaker identification in captions | 1.2.2 | Moderate |
© Community-Access, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/kb-media-accessibility of Community-Access/accessibility-agents.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit decf6ba
Compare with similar skills
Kb Media Accessibility 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 |
|---|---|---|---|---|---|---|
| Kb Media Accessibility this skillCommunity-Access/accessibility-agents | 423 | — | ~1.7k | Automated safety check: Pass | MIT | |
| 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 | 9.6k | 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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Categories
Questions about Kb Media Accessibility
What does Kb Media Accessibility do?
Reference data, not a reviewer. An agent skill from Community-Access/accessibility-agents. Kb Media Accessibility is an agent skill from Community-Access/accessibility-agents. Reference data, not a reviewer.
When should I use Kb Media Accessibility?
Kb Media Accessibility fits situations like: tasks that involve Accessibility.
How do I install Kb Media Accessibility in Claude Code?
Run `npx skills add Community-Access/accessibility-agents --skill kb-media-accessibility -a claude-code`. Or copy the skill folder (skills/kb-media-accessibility in Community-Access/accessibility-agents) into .claude/skills/kb-media-accessibility in your project. Claude Code loads it when a task matches its description.
How do I install Kb Media Accessibility in Codex?
Run `npx skills add Community-Access/accessibility-agents --skill kb-media-accessibility -a codex`. Or copy the skill folder (skills/kb-media-accessibility in Community-Access/accessibility-agents) into .agents/skills/kb-media-accessibility in your project. Codex loads it when a task matches its description.
Can I use Kb Media Accessibility 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 Community-Access/accessibility-agents --skill kb-media-accessibility -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kb-media-accessibility, .gemini/skills/kb-media-accessibility, .github/skills/kb-media-accessibility and .opencode/skills/kb-media-accessibility in your project.
What does Kb Media Accessibility need to run?
SKILL.md names no scripts, command-line tools or credentials: Kb Media Accessibility is instructions for the agent only.
Does Kb Media Accessibility 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 Kb Media Accessibility 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 Kb Media Accessibility use?
Kb Media Accessibility is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Kb Media Accessibility use?
About 1.7k tokens (SKILL.md is roughly 6.6k 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 Kb Media Accessibility?
Skills that share tags, products or a category with Kb Media Accessibility: 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, 9.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Kb Media Accessibility?
Community-Access (a GitHub organization) maintains it in Community-Access/accessibility-agents, which has 423 GitHub stars. The repository holds 108 skills in this directory. The repository was last updated on September 23, 2026.
Source: Community-Access/accessibility-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.