structure

structure is a skill for Claude Code from Owl-Listener/inclusive-design-skills. It costs 57 tokens per session (509 once invoked), scanned A, original, MIT.

A guide for organising pages so screen readers and other assistive tools can understand and navigate them. Screen readers read page structure, headings, landmarks, images, forms, and tables aloud or through a braille display.

In plain words
What is it for?
Use it to plan headings, page regions, image descriptions, form labels, and table structure for new pages or content templates.
Why use it?
It prevents users from encountering content as an unstructured stream or missing important context.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the accessible-content plugin — 9 skills shipped together

Good fit Use it to plan headings, page regions, image descriptions, form labels, and table structure for new pages or content templates.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/owl-listener/inclusive-design-skills/structure
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 Owl-Listener/inclusive-design-skills --skill structure
Clone the repo
git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills

Made for: Claude Code.

Or install accessible-content, the plugin that ships this one along with the rest of its 9 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 structure

README.md
[![agentmods](https://agentmods.dev/badge/skills/owl-listener/inclusive-design-skills/structure/github.svg)](https://agentmods.dev/skills/owl-listener/inclusive-design-skills/structure)
Your own site
<a href="https://agentmods.dev/skills/owl-listener/inclusive-design-skills/structure"><img src="https://agentmods.dev/badge/skills/owl-listener/inclusive-design-skills/structure/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 structure

Your own site · 80×15
<a href="https://agentmods.dev/skills/owl-listener/inclusive-design-skills/structure"><img src="https://agentmods.dev/badge/skills/owl-listener/inclusive-design-skills/structure.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 509 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 $0.00057 $0.00509
Opus 5 $0.00028 $0.00254
Sonnet 5 $0.00011 $0.00102
Haiku 4.5 $0.00006 $0.00051

Measured 10d ago against content hash 390b7cf43828, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

structure 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.

accessible-content/skills/structure/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Structure for Assistive Technology

Build content structure that assistive technology can parse, navigate, and present meaningfully — so the structure you designed is the structure every user experiences.

Process

Step 1: Define the Document Outline

Using heading-structure, design the heading hierarchy:

  • One H1 describing the page purpose
  • H2s for major sections
  • H3s for subsections within those
  • Verify: does reading only the headings tell the full story?

Step 2: Identify Landmarks

Map the page regions that assistive technology uses for navigation:

  • banner — site header and branding
  • navigation — primary and secondary nav
  • main — the primary content area
  • complementary — sidebars and related content
  • contentinfo — footer
  • search — search functionality
  • form — significant forms (use aria-label to distinguish multiples)

Every page should have at minimum: banner, navigation, main, contentinfo.

Step 3: Structure Images and Media

Using alt-text-design, assign alt text strategy for every image:

  • Decorative: empty alt
  • Functional: alt describes the action
  • Informative: alt describes the information
  • Complex: short alt plus extended description

Step 4: Structure Data

Using table-accessibility, for every table:

  • Assign headers with proper scope
  • Add caption describing the table's content
  • Plan responsive behaviour for small screens

Step 5: Structure Forms

Using form-labelling, for every form:

  • Associate every input with a visible label
  • Group related fields with fieldset/legend
  • Plan error message association
  • Define required field indication strategy

Step 6: Define Reading Order

  • Verify that the DOM order matches the visual order
  • Content should make sense when read linearly top to bottom
  • Avoid CSS that visually rearranges content away from DOM order
  • Tab order should follow reading order

Output

Deliver a structural specification that includes:

  • Document outline (heading hierarchy)
  • Landmark map
  • Image alt text strategy per image type
  • Table structure specification
  • Form labelling specification
  • Reading order confirmation

Read the full file on GitHub · 68 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 First seen · 68 lines · 57 tokens per session scan A 390b7cf43828

Subscribe to this mod's changes

structure is a skill published in the GitHub repository Owl-Listener/inclusive-design-skills (98 stars, last pushed 3mo ago), licensed MIT. It adds 57 tokens to every session and 509 once invoked, about $0.0003 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.

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