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aesthetic-usability-effect

aesthetic-usability-effect is a skill for Claude Code from Deibler/universal-design-principles. It costs 133 tokens per session (3,474 once invoked), scanned A, original, no licence file.

A design review guide for interfaces where users quickly judge quality, such as consumer products, marketing pages, onboarding, and first-use screens.

In plain words
What is it for?
Reviewing consumer-facing screens, marketing surfaces, onboarding flows, and other first-impression experiences.
Why use it?
It helps identify design friction that users may tolerate less when they are forming an early opinion of a product.

Skill for Claude Code

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

Part of the aesthetics-and-emotion-principles plugin — 17 skills shipped together

not rated 14repo +2 6mo ago A scan 133 tokens custom licence

Good fit Reviewing consumer-facing screens, marketing surfaces, onboarding flows, and other first-impression experiences.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/deibler/universal-design-principles/aesthetic-usability-effect
View source ↗ Deibler/universal-design-principles
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 Deibler/universal-design-principles --skill aesthetic-usability-effect
Clone the repo
git clone --depth 1 https://github.com/Deibler/universal-design-principles

Made for: Claude Code.

Or install aesthetics-and-emotion-principles, the plugin that ships this one along with the rest of its 17 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 aesthetic-usability-effect

README.md
[![agentmods](https://agentmods.dev/badge/skills/deibler/universal-design-principles/aesthetic-usability-effect/github.svg)](https://agentmods.dev/skills/deibler/universal-design-principles/aesthetic-usability-effect)
Your own site
<a href="https://agentmods.dev/skills/deibler/universal-design-principles/aesthetic-usability-effect"><img src="https://agentmods.dev/badge/skills/deibler/universal-design-principles/aesthetic-usability-effect/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 aesthetic-usability-effect

Your own site · 80×15
<a href="https://agentmods.dev/skills/deibler/universal-design-principles/aesthetic-usability-effect"><img src="https://agentmods.dev/badge/skills/deibler/universal-design-principles/aesthetic-usability-effect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,474 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 unknown 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 $0.00133 $0.03474
Opus 5.5 $0.00053 $0.01390
Sonnet 5.5 $0.00027 $0.00695
Haiku 4.5 $0.00013 $0.00347

Measured 2mo ago against content hash aa8152d957ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aesthetic-usability-effect 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 2mo 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/aesthetics-and-emotion-principles/skills/aesthetic-usability-effect/SKILL.md · 221 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 221 lines · 133 tokens per session scan A aa8152d957ce

Subscribe to this mod's changes

aesthetic-usability-effect is a skill published in the GitHub repository Deibler/universal-design-principles (14 stars, last pushed 6mo ago), with no licence file. It adds 133 tokens to every session and 3,474 once invoked, about $0.0005 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 2026-08-31.

Claude CodeDesign and UXagent-skillscodexcursordesign-principlesproduct-design
Related

aesthetic-usability-effect compared with skills from other repositories

aesthetic-usability-effect next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
aesthetic-usability-effectDeibler/universal-design-principlesSkill146mo agononeA133Claude Code
interaction-designrastian/interaction-design-skillsSkill212mo agononeA174Claude Code, Codex
behavioral-product-designaishwaryaashok14/thefoundersfoyer-ai-product-skillsSkill27mo agoMITA90Claude Code, Codex
vercel-composition-patternscalesthio/OpenMontageSkill77k3d agoAGPL-3.0A58Claude Code, Codex
create-chatgpt-mockupgooseworks-ai/goose-skillsSkill1.3k11d agoMITA90Claude Code, Codex
baoyu-designJimLiu/baoyu-designSkill6.1kyesterdaynoneA155Claude Code, Codex
design-reviewPrismer-AI/PrismerCloudSkill1.4k15d agoMITA84Claude Code