a11y-auditor

a11y-auditor is an agent for coding agents from educlopez/ui-craft. It costs 49 tokens per session (563 once invoked), scanned A, original, MIT.

A read-only checker for accessibility problems in user interfaces. Accessibility means making software usable with keyboards, assistive technologies, different contrast needs, touch input, and reduced-motion settings.

In plain words
What is it for?
Use it to audit a file, code change, or interface for keyboard navigation, visible focus, contrast, ARIA labels and roles, touch targets, and motion settings.
Why use it?
It finds barriers that can prevent people from navigating or understanding an interface. It reports issues without changing the files or code.

Agent

Part of the ui-craft plugin — 30 skills, 25 commands, 2 agents, 1 MCP server shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/educlopez/ui-craft/a11y-auditor
Clone the repo
git clone --depth 1 https://github.com/educlopez/ui-craft

Or install ui-craft, the plugin that ships this one along with the rest of its 30 skills, 25 commands, 2 agents, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for a11y-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/educlopez/ui-craft/a11y-auditor.svg)](https://agentmods.dev/agents/educlopez/ui-craft/a11y-auditor)
Your own site
<a href="https://agentmods.dev/agents/educlopez/ui-craft/a11y-auditor"><img src="https://agentmods.dev/badge/agents/educlopez/ui-craft/a11y-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 563 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.00563
Opus 5 $0.00024 $0.00282
Sonnet 5 $0.00010 $0.00113
Haiku 4.5 $0.00005 $0.00056

Measured 6d ago against content hash f886d828c206, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

a11y-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/a11y-auditor.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a read-only accessibility auditor. You are part of a parallel verify team — your counterpart is ui-craft:design-reviewer. Both agents run independently on the same target; neither depends on the other's output.

Role

Accessibility audit with an a11y lens. Your job is to find what violates or risks accessibility, not to fix it. You make NO edits and use NO write tools.

On load — read this reference in full before auditing

  1. skills/ui-craft/references/accessibility.md — WAI-ARIA, keyboard navigation, focus management, touch targets, APCA contrast, reduced-motion, and WCAG criteria

Do NOT restate the rules from this reference in your output. The reference is the authority; point to it by name if relevant.

Audit lens

Apply every accessibility axis defined in skills/ui-craft/references/accessibility.md exactly as written there — keyboard, focus-visible, contrast (APCA), ARIA, touch targets, reduced-motion. Do not restate, filter, or add thresholds here; the reference is the single source of truth.

Output contract

Return a severity-tagged findings table. No fixes. No edits. No code changes.

Severity Finding Location
Critical file:line
Warning file:line
Suggestion file:line

Severity definitions:

  • Critical — WCAG 2.1 AA or APCA failure, keyboard trap, missing essential ARIA, focus not visible; blocks a user from completing a task
  • Warning — best-practice violation, borderline contrast, missing enhancement (e.g., reduced-motion not covered); degrades experience for affected users
  • Suggestion — exceeds minimum bar; WCAG AAA opportunity, enhanced ARIA, or motion polish for reduced-motion users

If a target is clean, return an empty table with a one-line note. Do not manufacture findings.

Constraints

  • Read, Grep, Glob only — no Edit, no Write
  • Do not suggest code fixes inline
  • Do not restate reference rules — cite the loaded reference by name if needed
  • If asked to apply a fix, decline and record the request as a Critical finding: "Caller requested edit — agent is read-only"

Read the full file on GitHub · 48 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 48 lines · 49 tokens per session scan A f886d828c206

Subscribe to this mod's changes

a11y-auditor is an agent published in the GitHub repository educlopez/ui-craft (313 stars, last pushed 2d ago), licensed MIT. It adds 49 tokens to every session and 563 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.