ada-wcag

ada-wcag is a skill for Claude Code from bromso/metapowers. It costs 18 tokens per session (1,449 once invoked), scanned A, original, MIT.

An assessment of website accessibility against ADA Title III, a US law covering public services and businesses, and WCAG 2.2 AA, a widely used accessibility standard.

In plain words
What is it for?
Use it to review web accessibility, assess whether the rules apply, examine enforcement requirements, and plan fixes.
Why use it?
It helps identify barriers that could prevent people with disabilities from using a website and highlights related legal risks.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: positional $N argument.

Part of the compliance plugin — 12 skills, 1 MCP server shipped together

Good fit Use it to review web accessibility, assess whether the rules apply, examine enforcement requirements, and plan fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bromso/metapowers/ada-wcag
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 bromso/metapowers --skill ada-wcag
Clone the repo
git clone --depth 1 https://github.com/bromso/metapowers

Made for: Claude Code.

Or install compliance, the plugin that ships this one along with the rest of its 12 skills, 1 MCP server.

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 ada-wcag

README.md
[![agentmods](https://agentmods.dev/badge/skills/bromso/metapowers/ada-wcag/github.svg)](https://agentmods.dev/skills/bromso/metapowers/ada-wcag)
Your own site
<a href="https://agentmods.dev/skills/bromso/metapowers/ada-wcag"><img src="https://agentmods.dev/badge/skills/bromso/metapowers/ada-wcag/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 ada-wcag

Your own site · 80×15
<a href="https://agentmods.dev/skills/bromso/metapowers/ada-wcag"><img src="https://agentmods.dev/badge/skills/bromso/metapowers/ada-wcag.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,449 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 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 $0.00018 $0.01449
Opus 5 $0.00009 $0.00724
Sonnet 5 $0.00004 $0.00290
Haiku 4.5 $0.00002 $0.00145

Measured 9d ago against content hash f7bb484bec18, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ada-wcag 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 9d 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/compliance/skills/ada-wcag/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADA / WCAG 2.2 Assessment

Assess ADA Title III and WCAG 2.2 Level AA compliance for "$ARGUMENTS". Evaluate web accessibility legal requirements, enforcement trends, and remediation planning with attention to heightened state requirements.

Prerequisites

Read .metapowers/compliance/$ARGUMENTS/00-scope.md. If this file does not exist, tell the user:

Phase 0 (Scope) has not been completed for "$ARGUMENTS". Run /compliance:regulatory-landscape $ARGUMENTS first, or use --skip-checks to bypass.

If --skip-checks is present in $ARGUMENTS, skip this check.

Process

  1. Read context files:

    • Read plugins/compliance/shared/grc-lifecycle-guide.md for GRC methodology reference
    • Read plugins/compliance/shared/assessment-template.md for output structure
    • Read .metapowers/compliance/$ARGUMENTS/00-scope.md for scope and control framework context
  2. ADA Title III applicability assessment:

    • Determine if the organization operates a "place of public accommodation" with digital presence
    • Assess DOJ rulemaking and guidance on web accessibility under ADA Title III
    • Evaluate applicability of DOJ's April 2024 final rule on web and mobile accessibility (State and local governments under Title II; private sector guidance under Title III)
    • Review Section 508 applicability for federal-facing services
    • Assess state-level accessibility laws (California Unruh Civil Rights Act, New York State Human Rights Law)
  3. WCAG 2.2 Level AA assessment:

    • Assess against all WCAG 2.2 Level AA success criteria across four principles:
      • Perceivable: text alternatives (1.1.1), captions (1.2.2), audio description (1.2.5), info and relationships (1.3.1), meaningful sequence (1.3.2), sensory characteristics (1.3.3), orientation (1.3.4), input purpose (1.3.5), contrast (1.4.3), resize text (1.4.4), images of text (1.4.5), reflow (1.4.10), non-text contrast (1.4.11), text spacing (1.4.12), content on hover/focus (1.4.13)
      • Operable: keyboard (2.1.1), no keyboard trap (2.1.2), timing adjustable (2.2.1), pause/stop/hide (2.2.2), three flashes (2.3.1), bypass blocks (2.4.1), page titled (2.4.2), focus order (2.4.3), link purpose (2.4.4), multiple ways (2.4.5), headings and labels (2.4.6), focus visible (2.4.7), focus not obscured minimum (2.4.11), dragging movements (2.5.7), target size minimum (2.5.8)
      • Understandable: language of page (3.1.1), language of parts (3.1.2), on focus (3.2.1), on input (3.2.2), consistent navigation (3.2.3), consistent identification (3.2.4), error identification (3.3.1), labels (3.3.2), error suggestion (3.3.3), error prevention (3.3.4), redundant entry (3.3.7), accessible authentication minimum (3.3.8)
      • Robust: parsing (4.1.1 — obsolete in 2.2), name/role/value (4.1.2), status messages (4.1.3)
    • Document pass/fail per success criterion with severity assessment

Read the full file on GitHub · 83 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. 9d ago First seen · 83 lines · 18 tokens per session scan A f7bb484bec18

Subscribe to this mod's changes

ada-wcag is a skill published in the GitHub repository bromso/metapowers (1 stars, last pushed 4mo ago), licensed MIT. It adds 18 tokens to every session and 1,449 once invoked, about $0.0001 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.

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