A11y

What it does

When your agent uses it

• The user wants to check
• Improve accessibility
• Fix WCAG issues
• Pass an a11y review

Example prompts

• “/a11y”

Requirements

• Node.js
• Pre-approved tools (allowed-tools): Bash, Read, Edit, Grep, Glob

Workflow steps

5 steps, taken from the step headings in SKILL.md.

1. 1Scan
2. 2Report
3. 3Fix (use the Edit tool on the source files)
4. 4Escalate to a rendered scan (contrast, focus, reading order)
5. 5Verify

What it can do on your machine

Read from SKILL.md and the folder at commit ed232cb. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash
  • Read
  • Edit
  • Grep
  • Glob

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • node
  • npx

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

  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

A11y loads about 1.2k tokens when it runs. Until then it costs about 79 tokens; SKILL.md has 538 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~79

When it runs · the whole SKILL.md, loaded when a task matches

~1.2k

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

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash, Read, Edit, Grep, Glob

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 Houseofmvps/ultraship at commit ed232cb, republished under its MIT licence (© Houseofmvps). 538 words, ~1,230 tokens.

name

a11y

description

Accessibility audit + auto-fix (WCAG 2.2 A/AA). Scans built/static HTML for screen-reader, keyboard, and structure failures, fixes the deterministic ones, and escalates to a rendered scan for contrast and focus. Use when the user wants to check or improve accessibility, fix WCAG issues, or pass an a11y review.

allowed-tools

Bash, Read, Edit, Grep, Glob

argument-hint

<url-or-directory>

paths

**/*.html, **/*.htm, **/index.html

node ${CLAUDE_PLUGIN_ROOT}/tools/a11y-scanner.mjs <project-directory>

# Pa11y (axe + htmlcs runners). Use --runner axe for axe-core rules.
npx --yes pa11y --standard WCAG2AA <url>

# or the axe CLI directly
npx --yes @axe-core/cli <url>

node ${CLAUDE_PLUGIN_ROOT}/tools/a11y-scanner.mjs <project-directory>
node ${CLAUDE_PLUGIN_ROOT}/tools/audit-history.mjs save <project-dir> a11y <score>

© Houseofmvps, MIT. 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 skills/a11y of Houseofmvps/ultraship.

Open the folder on GitHubat commit ed232cb