accesslint-diff

accesslint-diff is a skill for Claude Code from iradoweck/antigravity-awesome-skills. It costs 68 tokens per session (782 once invoked), scanned A, a copy of accesslint-diff, MIT.

An accessibility comparison tool that checks how a live page's accessibility problems changed against a baseline.

In plain words
What is it for?
Use it to compare uncommitted changes or a branch, and report accessibility violations added, fixed, or left over.
Why use it?
It shows newly introduced and fixed violations without making you review every existing issue again.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Part of the agentic-awesome-skills plugin — 255 skills shipped together

Good fit Use it to compare uncommitted changes or a branch, and report accessibility violations added, fixed, or left over.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/iradoweck/antigravity-awesome-skills/accesslint-diff
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 iradoweck/antigravity-awesome-skills --skill accesslint-diff
Clone the repo
git clone --depth 1 https://github.com/iradoweck/antigravity-awesome-skills

Made for: Claude Code.

Or install agentic-awesome-skills, the plugin that ships this one along with the rest of its 255 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-diff

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/iradoweck/antigravity-awesome-skills/accesslint-diff"><img src="https://agentmods.dev/badge/skills/iradoweck/antigravity-awesome-skills/accesslint-diff.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 782 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 100% copy Near-identical to another mod 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 $0.00068 $0.00782
Opus 5.5 $0.00027 $0.00313
Sonnet 5.5 $0.00014 $0.00156
Haiku 4.5 $0.00007 $0.00078

Measured 10d ago against content hash dd434b5f07e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

accesslint-diff 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 10d 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

This is a copy

100% identical to accesslint-diff — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/agentic-awesome-skills-claude/skills/accesslint-diff/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to Use

  • Compare a requested page's accessibility findings between verified base and candidate revisions.
  • Report introduced, fixed and still-present findings without changing application source.

1. Establish isolated snapshots

This package does not bundle the CLI or browser. Verify the current installed tool schema or a reviewed pinned package version first. Do not evaluate $ARGUMENTS or branch/URL text as shell syntax.

  1. Resolve the requested base and head to full commit SHAs; identify whether staged, unstaged or untracked content belongs to the candidate.
  2. Preserve the user's checkout. Prefer isolated worktrees or recoverable snapshots for base and candidate; do not switch their branch or pop an unrelated stash. A branch mode comparing only committed HEAD must disclose excluded local changes.
  3. Use each revision's reviewed lockfile and authorized build procedure. Serve base and candidate on separate local ports, wait for a deterministic ready selector and verify which revision each page actually serves. A fixed sleep is not a readiness check.
  4. Audit matching URLs, account state, viewport, selectors, engine version and rule configuration. Keep private snapshots in a fresh owner-only directory, not a predictable shared /tmp filename. Capture the baseline and candidate using the actual supported CLI flags; do not invent commands when integration is unavailable.
  5. Compare findings and inspect selector drift or removed content. Record inaccessible states and manual WCAG checks separately. Never promise full restoration without verifying file status and content.

2. Report

Accessibility diff — http://localhost:3000/ vs main (94 rules, live DOM)
2 new · 1 fixed · 4 pre-existing hidden

New — Critical
- color-contrast — 2.1:1 (needs 4.5:1), #bbb on #fff
    where: main > p.subtitle   fix: darken to #767676
Fixed
- img-alt — <img src="old.jpg"> (no longer present)

Each new violation: where (selector verbatim + file:line (symbol) if source present — never fabricate), evidence, fix (mechanical change or NEEDS HUMAN).

Read the full file on GitHub · 56 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. 10d ago Changed · -32 lines dd434b5f07e8
  2. 1mo ago First seen · 88 lines · 68 tokens per session scan A 604484bc1757

Subscribe to this mod's changes

accesslint-diff is a skill published in the GitHub repository iradoweck/antigravity-awesome-skills (30 stars, last pushed 4d ago), licensed MIT. It adds 68 tokens to every session and 782 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to accesslint-diff, differing in 0 lines, and is treated as a copy.

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