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 klovaaxel/web-a11y-agent-skills --skill web-a11y-formsgit clone --depth 1 https://github.com/klovaaxel/web-a11y-agent-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/klovaaxel/web-a11y-agent-skills/web-a11y-forms)<a href="https://agentmods.dev/skills/klovaaxel/web-a11y-agent-skills/web-a11y-forms"><img src="https://agentmods.dev/badge/skills/klovaaxel/web-a11y-agent-skills/web-a11y-forms/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/klovaaxel/web-a11y-agent-skills/web-a11y-forms"><img src="https://agentmods.dev/badge/skills/klovaaxel/web-a11y-agent-skills/web-a11y-forms.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00042 | $0.00278 |
| Opus 5 | $0.00021 | $0.00139 |
| Sonnet 5 | $0.00008 | $0.00056 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
web-a11y-forms 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 11d 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.
What it actually says
Web A11y Forms
Form Rules
For label and validation examples, see EXAMPLES.md.
- Every field needs a persistent programmatic label.
- Placeholder text must not be the only label or instruction.
- Use native inputs and controls unless a custom widget is truly required.
- Group related controls with
fieldsetandlegendwhen the group label matters. - Associate help, constraints, and errors with the relevant control.
- Preserve user input and focus context after validation failures.
Checklist
Forms checklist
- [ ] Labels are explicit and durable
- [ ] Required/optional state is clear
- [ ] Help text and constraints are discoverable
- [ ] Errors are specific, linked to fields, and recoverable
- [ ] Error summary supports quick navigation when useful
- [ ] Search exposes query context, result count, and no-result guidance
- [ ] Multi-step forms expose current step and progress
Output
Document labeling strategy, validation flow, error recovery, focus behavior, and test steps for invalid and corrected input.
What ships with it
1 file 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.
- 11d ago First seen · 36 lines · 42 tokens per session scan A 254b66707c89
web-a11y-forms is a skill published in the GitHub repository klovaaxel/web-a11y-agent-skills (5 stars, last pushed 4mo ago), licensed MIT. It adds 42 tokens to every session and 278 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 2026-08-31.
Other skills, from other repositories
Accessibility A11y Enhanced
Comprehensive WCAG compliance and accessibility testing covering ARIA, keyboard navigation, screen readers, color contrast, and automated a11y validation.
Axe-core Accessibility Testing
Accessibility testing skill using axe-core and Playwright for automated WCAG 2.1 compliance auditing, custom rules, and accessibility reporting.
Accessibility Audit Helper
Reviews UI code and components for WCAG 2.1 accessibility violations and provides specific fixes.
accessibility
Accessibility patterns for WCAG 2.2 compliance, keyboard focus management, React Aria component patterns, cognitive inclusion, native HTML-first philosophy, and user preference honoring. Use when implementing screen reader support, keyboard navigation, ARIA patterns, focus traps, accessible component libraries…
Accessibility Auditor
Comprehensive WCAG 2.1 AA compliance testing combining automated axe-core scans with manual keyboard navigation, screen reader compatibility, and focus management verification.
axe-core Accessibility Automation
Automated accessibility testing with axe-core integrated into CI pipelines, including custom rule configuration, issue prioritization, and remediation guidance.