An accessibility audit that checks a web page for problems affecting people with disabilities. It reports the selector for each failing element and suggests a fix.

Use it to inspect a page for accessibility failures, find the affected HTML or component, and apply the reported correction.

It identifies concrete page elements that need attention instead of giving only a general accessibility score. The selector helps a developer locate the problem in the code.

check-a11y — Skill for Claude Code by Ge0rg3/vscode-prompt-studio

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.

Any agent

npx skills add Ge0rg3/vscode-prompt-studio --skill check-a11y

Clone the repo

git clone --depth 1 https://github.com/Ge0rg3/vscode-prompt-studio

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ge0rg3/vscode-prompt-studio/check-a11y/github.svg)](https://agentmods.dev/skills/ge0rg3/vscode-prompt-studio/check-a11y)

Your own site

<a href="https://agentmods.dev/skills/ge0rg3/vscode-prompt-studio/check-a11y"><img src="https://agentmods.dev/badge/skills/ge0rg3/vscode-prompt-studio/check-a11y/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ge0rg3/vscode-prompt-studio/check-a11y"><img src="https://agentmods.dev/badge/skills/ge0rg3/vscode-prompt-studio/check-a11y.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 480 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00019	$0.00480
Opus 5.5	$0.00008	$0.00192
Sonnet 5.5	$0.00004	$0.00096
Haiku 4.5	$0.00002	$0.00048

Measured 2mo ago against content hash 3418bddde362, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

check-a11y 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 2mo 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.

demo/.claude/skills/check-a11y/SKILL.md · 41 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

2mo ago First seen · 41 lines · 19 tokens per session scan A 3418bddde362

Subscribe to this mod's changes

check-a11y is a skill published in the GitHub repository Ge0rg3/vscode-prompt-studio (6 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 19 tokens to every session and 480 once invoked, about $0.0001 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 2026-08-31.

Claude Code Frontend developer-tools prompt-engineering prompt-management vscode-extension

check-a11y next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
check-a11yGe0rg3/vscode-prompt-studio	Skill	6	1mo ago	GPL-3.0	A	19	Claude Code
my-skillsyyy805/my-skills	Skill	2	3mo ago	none	C	160	Claude Code
workthreadsspecstoryai/getspecstory	Skill	1.4k	yesterday	Apache-2.0	A	126	Claude Code
happiness-skillkangarooking/cangjie-skill	Skill	12k	1mo ago	MIT	A	136	Claude Code, Codex
setup-matt-pocock-skillsdevcxl/mattpocock-skills-zh	Skill	530	3d ago	MIT	A	43	Claude Code, Codex
config-validatorjmagly/aiwg	Skill	229	yesterday	MIT	A	15	Claude Code, Codex
aiwg-regenerate-copilotjmagly/aiwg	Skill	229	yesterday	MIT	A	25	Claude Code, Codex