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.
npx skills add petrkindlmann/qa-skills --skill accessibility-testinggit clone --depth 1 https://github.com/petrkindlmann/qa-skillsWrote 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.
[](https://agentmods.dev/skills/petrkindlmann/qa-skills/accessibility-testing)<a href="https://agentmods.dev/skills/petrkindlmann/qa-skills/accessibility-testing"><img src="https://agentmods.dev/badge/skills/petrkindlmann/qa-skills/accessibility-testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/petrkindlmann/qa-skills/accessibility-testing"><img src="https://agentmods.dev/badge/skills/petrkindlmann/qa-skills/accessibility-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00145 | $0.04547 |
| Opus 5.5 | $0.00058 | $0.01819 |
| Sonnet 5.5 | $0.00029 | $0.00909 |
| Haiku 4.5 | $0.00015 | $0.00455 |
Grade A, and why
accessibility-testing 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.
How it starts
The opening of the file, as written. The whole thing — 302 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Discovery Questions
Check .agents/qa-project-context.md first — if it exists, use it as the foundation and skip
anything already answered.
Requirements and compliance (sets the target level and audit obligations)
- What WCAG conformance level is required — A, AA, or AAA? AA is the practical legal default.
- What laws apply — ADA, EAA/EN 301 549, Section 508, AODA? Each maps to a WCAG level.
- Is there a VPAT or accessibility statement to maintain, or contractual a11y clauses from enterprise/government customers?
Current state (tells you whether you're auditing or preventing regressions)
- Has an audit run before? What were the findings, and what's already in the backlog?
- Does the design system carry accessibility guidance and accessible components?
Testing infrastructure (determines what you can automate vs. must do by hand)
- Is automated a11y testing already in CI?
- Which screen readers does the team test with — VoiceOver, NVDA, JAWS, TalkBack?
Core Principles
- Automated testing catches 30-40% of issues — no more. axe-core finds missing alt text, low contrast, missing labels, and invalid ARIA. It cannot tell you whether alt text is meaningful, whether tab order is logical, or whether a custom widget is operable. Passing axe is necessary, not sufficient. Crucially, axe ships no automated rule for several WCAG 2.2 success criteria (2.4.11 focus-not-obscured, 2.5.7 dragging movements, and 2.5.8 target-size only partially) — a green axe run does not equal 2.2 AA conformance.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 3d ago Changed · +8 lines a50f053494b7
- 1mo ago First seen · 294 lines · 145 tokens per session scan A 04f0a8faffba
accessibility-testing is a skill published in the GitHub repository petrkindlmann/qa-skills (208 stars, last pushed 2d ago), licensed MIT. It adds 145 tokens to every session and 4,547 once invoked, about $0.0006 per session on Opus 5.5. 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.
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