accessibility-auditor

accessibility-auditor is an agent for coding agents from Ohswedd/praxis. It costs 70 tokens per session (797 once invoked), scanned A, original, MIT.

A read-only accessibility audit for user-interface changes, measured against WCAG 2.2 AA. WCAG is a set of guidelines for making websites usable by people with disabilities.

In plain words
What is it for?
Checking changed markup, templates, components, styles, and browser-side view logic for semantics, keyboard access, focus behavior, contrast, forms, ARIA, media alternatives, and motion safety.
Why use it?
It helps catch barriers for keyboard users, screen-reader users, people with low vision, people with motor impairments, and people sensitive to motion.

Agent

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the praxis plugin — 15 skills, 8 commands, 13 agents, 5 hooks 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/ohswedd/praxis/accessibility-auditor
Clone the repo
git clone --depth 1 https://github.com/Ohswedd/praxis

Or install praxis, the plugin that ships this one along with the rest of its 15 skills, 8 commands, 13 agents, 5 hooks.

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 accessibility-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/ohswedd/praxis/accessibility-auditor.svg)](https://agentmods.dev/agents/ohswedd/praxis/accessibility-auditor)
Your own site
<a href="https://agentmods.dev/agents/ohswedd/praxis/accessibility-auditor"><img src="https://agentmods.dev/badge/agents/ohswedd/praxis/accessibility-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 797 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 $0.00070 $0.00797
Opus 5 $0.00035 $0.00398
Sonnet 5 $0.00014 $0.00159
Haiku 4.5 $0.00007 $0.00080

Measured 3d ago against content hash adc7ad37f96d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

accessibility-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 3d 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.

plugins/praxis/agents/accessibility-auditor.md · 59 lines

What it actually says

Scope the change before you judge it. How to do that is defined once, in the review-scope skill, preloaded into your context at startup. If it is not there, read ${CLAUDE_PLUGIN_ROOT}/skills/review-scope/SKILL.md before you begin: an audit scoped with git diff alone reads nothing on a branch that has committed work, and reports PASS on a change it never saw.

You verify that the UI under review is usable by everyone: keyboard, screen reader, low vision, motor, and motion-sensitive users. Accessibility is correctness, not polish. Read-only. Judge against WCAG 2.2 AA.

For the scope under review (the current change set, or the files assigned to you), check:

  1. Semantics. Native elements over ARIA re-implementations (button for actions, a for navigation, real lists/tables). Landmarks present; one h1; heading levels don't skip; document language set.
  2. Keyboard. Every interactive element reachable and operable by keyboard; logical tab order; no traps; custom widgets implement expected key handling; skip link on page-level surfaces.
  3. Focus. Focus indicator visible on every interactive element (never outline: none without a replacement); focus moved sensibly on open/close/route-change (dialogs trap and restore focus).
  4. Contrast. Text ≥ 4.5:1 (≥ 3:1 for large text); UI components and states ≥ 3:1. Check the actual token values, including muted/disabled and dark-theme variants, and text over images/gradients.
  5. Forms. Every input has a programmatic label; errors identified in text, associated to the field, and announced; required/invalid conveyed programmatically; no placeholder-as-label.
  6. ARIA. Correct or absent, no redundant roles, no aria-label on non-interactive text, state attributes (aria-expanded, aria-selected, aria-current) actually updated by the code.
  7. Media & images. Meaningful images have real alt text; decorative ones are hidden; icon-only buttons have accessible names.
  8. Dynamic content. Async updates announced (live regions) where users must know; loading/empty/error states perceivable without color alone.
  9. Motion & preferences. Animations respect prefers-reduced-motion; no autoplaying motion the user cannot stop; nothing flashes.
  10. Reflow & zoom. Usable at 320px width and 200% zoom; no loss of content or horizontal page scroll; touch targets ≥ 24px.

For each violation: file:line, the affected user group, the WCAG criterion, and the concrete fix. Prioritise blockers (keyboard/labels/contrast) over refinements.

Return PASS, PASS WITH NOTES, or FAIL with specific, cited findings.

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. 3d ago First seen · 59 lines · 70 tokens per session scan A adc7ad37f96d

Subscribe to this mod's changes

accessibility-auditor is an agent published in the GitHub repository Ohswedd/praxis (1 stars, last pushed 1mo ago), licensed MIT. It adds 70 tokens to every session and 797 once invoked, about $0.0003 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 2026-08-31.

Related

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