accesslint-scan

accesslint-scan is a skill for Claude Code from sickn33/agentic-awesome-skills. It costs 32 tokens per session (737 once invoked), scanned A, original, MIT.

A live-page accessibility scanner that finds WCAG violations and points to the exact page selectors where they occur. WCAG is a set of guidelines for making digital products usable by people with disabilities.

In plain words
What is it for?
Scanning a URL, reporting issues by impact, showing evidence such as missing attributes or poor contrast, and producing a selector-based fix list.
Why use it?
It gives developers a precise list of accessibility problems without changing the page or code.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./node_modules/.bin/accesslint-chrome ensure > "$session_file".

Part of the agentic-awesome-skills plugin — 257 skills shipped together

Good fit Scanning a URL, reporting issues by impact, showing evidence such as missing attributes or poor contrast, and producing a selector-based fix list.

Compare 6 skills from other repositories ↓
About the project

AAS Core is a local control plane for coding agents that lets them search a large catalogue of skills, choose a stack, validate it, and create a reproducible plan. It is used to assemble and review agent workflows through its CLI, local MCP server, catalogue, plugins, and Workbench. The catalogue add-ons provide the skills, plugins, bundles, and workflows that AAS Core helps agents select and validate.

sickn33/agentic-awesome-skills · 48,622 stars · on GitHub · aaskills.tech

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills
agentmods
npx agentmods add skills/sickn33/agentic-awesome-skills/accesslint-scan

Made for: Claude Code.

Or install agentic-awesome-skills, the plugin that ships this one along with the rest of its 257 skills.

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 accesslint-scan

README.md
[![agentmods](https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/accesslint-scan/github.svg)](https://agentmods.dev/skills/sickn33/agentic-awesome-skills/accesslint-scan)
Your own site
<a href="https://agentmods.dev/skills/sickn33/agentic-awesome-skills/accesslint-scan"><img src="https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/accesslint-scan/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.

agentmods 80×15 button for accesslint-scan

Your own site · 80×15
<a href="https://agentmods.dev/skills/sickn33/agentic-awesome-skills/accesslint-scan"><img src="https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/accesslint-scan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 737 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. Third-party audits
  • Snyk warn 7 Sept 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 17
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 36
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 18
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00032 $0.00737
Opus 5.5 $0.00013 $0.00295
Sonnet 5.5 $0.00006 $0.00147
Haiku 4.5 $0.00003 $0.00074

Measured 13d ago against content hash 4046dbec34ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

accesslint-scan 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 13d 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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

plugins/agentic-awesome-skills-claude/skills/accesslint-scan/SKILL.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Audit a live page and report what's broken and where. Locate; don't fix. If no URL in $ARGUMENTS, ask for one.

When to Use

  • A supplied page needs an automated contrast, accessible-name, or semantic-markup audit.
  • You need selector-grounded findings after a UI change, without modifying the application.
  • Manual assistive-technology checks or site-wide conformance assessment are separate work.

1. Audit

Use an already reviewed, project-pinned installation of @accesslint/chrome and @accesslint/cli; confirm their local binaries and CLI help before execution. Do not silently download and execute @latest. Confirm the URL and whether browser access could expose authenticated or sensitive content.

For a project whose locked installation exposes these binary names:

session_file="$(mktemp)"
./node_modules/.bin/accesslint-chrome ensure > "$session_file"

Read the complete JSON result once, record port and managed, and substitute the returned port in ./node_modules/.bin/accesslint scan "<target>" --port "<returned-port>" --format json. Never parse arbitrary stdout chunks as complete JSON. Confirm the actual binary names from the installed packages; they may differ by version. The current upstream command shape is scan <target> --port <port> --format json.

Flags as needed: --selector, --wait-for "<selector>", --include-aaa, --disable <rules>.

2. Report

Counts by impact, then one entry per violation:

  • where — selector verbatim + file:line (symbol) if source is present — never fabricate. If no violation has source, note "source mapping unavailable — located by selector only".
  • evidence — contrast ratio, missing attribute, empty name
  • fix — mechanical change or NEEDS HUMAN

Return the worklist without editing. Remediation requires a separate authorized task; current upstream names it accesslint:accessibility-fix, which may not be installed in this host.

3. Tear down

Stop only the managed browser session created for this audit, using the installed helper's supported session/port-specific stop operation. If it only supports stop --all, check for other managed sessions first and do not terminate unrelated audits. Skip teardown of an unmanaged browser.

Read the full file on GitHub · 64 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. 13d ago Changed · +16 lines 4046dbec34ff
  2. 1mo ago First seen · 48 lines · 32 tokens per session scan A ed6f7bce4d22

Subscribe to this mod's changes

accesslint-scan is a skill published in the GitHub repository sickn33/agentic-awesome-skills (48,622 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 737 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 2026-08-30.