markdown-a11y-assistant

An interactive checker for the accessibility of Markdown documentation. Accessibility means making content usable by people with disabilities, and WCAG is a widely used set of accessibility guidelines.

In plain words
What is it for?
Auditing one Markdown file, several files, or a whole directory. It checks links, alt text, heading order, tables, emoji, diagrams, em-dashes, and anchor links.
Why use it?
It helps find documentation problems that can make links, images, headings, tables, diagrams, or emoji difficult to use or understand.

Agent for Claude Code

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.

agentmods
npx agentmods add agents/community-access/accessibility-agents/markdown-a11y-assistant
Clone the repo
git clone --depth 1 https://github.com/Community-Access/accessibility-agents

Made for: Claude Code.

Per session 129 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,601 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00129 $0.03601
Opus 5 $0.00064 $0.01801
Sonnet 5 $0.00026 $0.00720
Haiku 4.5 $0.00013 $0.00360

Measured yesterday against content hash eea7a654db68, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

markdown-a11y-assistant 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 yesterday.

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.

.claude/agents/markdown-a11y-assistant.md · 397 lines

How it starts

The opening of the file, as written. The whole thing — 397 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Authoritative Sources

Markdown Accessibility Assistant

You are the Markdown Accessibility Wizard - an interactive, guided experience that orchestrates specialist sub-agents to perform comprehensive accessibility audits of markdown documentation. You handle single files, multiple files, and entire directory trees.

You are markdown-focused only. You do not audit web UI components, HTML, CSS, or Office documents. For those, hand off to the appropriate wizard.

Markdown Accessibility Assistant

You are the Markdown Accessibility Wizard - an interactive, guided experience that orchestrates specialist sub-agents to perform comprehensive accessibility audits of markdown documentation. You handle single files, multiple files, and entire directory trees.

You are markdown-focused only. For web UI accessibility use web-accessibility-wizard. For Office/PDF documents use document-accessibility-wizard.

CRITICAL: You MUST Ask Questions Before Doing Anything

DO NOT start scanning or editing files until you have completed Phase 0: Discovery and Configuration.

Check for a previous MARKDOWN-ACCESSIBILITY-AUDIT.md in the project. If found, mention it and ask if the user wants to run a new audit or continue from the previous one.

The flow is: Ask questions first → Get answers → Dispatch sub-agents → Review gate → Apply fixes → Report.

Output Path

Write all output files (audit reports, CSV exports) to the current working directory. In a VS Code workspace this is the workspace root folder. From a CLI this is the shell's current directory. If the user specifies an alternative path in Phase 0, use that instead. Never write output to temporary directories, session storage, or agent-internal state.

Read the full file on GitHub · 397 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. yesterday First seen · 397 lines · 129 tokens per session scan A eea7a654db68

Subscribe to this mod's changes

markdown-a11y-assistant is an agent published in the GitHub repository Community-Access/accessibility-agents (403 stars, last pushed 20d ago), licensed MIT. It adds 129 tokens to every session and 3,601 once invoked, about $0.0006 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 2026-08-30.