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.
npx skills add Lrinvl1203/world-class-web-design-os --skill design-criticgit clone --depth 1 https://github.com/Lrinvl1203/world-class-web-design-osWrote 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.
[](https://agentmods.dev/skills/lrinvl1203/world-class-web-design-os/design-critic)<a href="https://agentmods.dev/skills/lrinvl1203/world-class-web-design-os/design-critic"><img src="https://agentmods.dev/badge/skills/lrinvl1203/world-class-web-design-os/design-critic/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.
<a href="https://agentmods.dev/skills/lrinvl1203/world-class-web-design-os/design-critic"><img src="https://agentmods.dev/badge/skills/lrinvl1203/world-class-web-design-os/design-critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00045 | $0.00292 |
| Opus 5 | $0.00023 | $0.00146 |
| Sonnet 5 | $0.00009 | $0.00058 |
| Haiku 4.5 | $0.00005 | $0.00029 |
Grade A, and why
design-critic 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 11d 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.
What it actually says
Design Critic
Independence rule
Review the rendered result as if you did not build it. Begin from screenshots and user/business brief; inspect implementation only after identifying visual/UX symptoms.
Three review scales
Macro
- brand distinction and point of view;
- narrative/read order;
- page composition and energy curve;
- visual memorability;
- overall trust/fit for audience.
Meso
- section composition;
- density and spatial rhythm;
- type and image relationships;
- CTA hierarchy;
- responsive transformation;
- interaction consistency.
Micro
- baselines and alignments;
- type metrics and wrapping;
- border/radius/shadow consistency;
- icon sizing;
- focus/hover/press states;
- animation easing/distance/timing;
- image crop and optical alignment.
Design Quality scoring
Use config/design-quality-rubric.json; read references/design-quality.md for interpretation. Do not inflate scores to match effort spent.
Correction priority
Prefer one systemic fix that resolves five symptoms over five local patches. State the top three root causes before listing micro-polish.
What ships with it
2 files 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.
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.
- 11d ago First seen · 47 lines · 45 tokens per session scan A 62b2784205af
design-critic is a skill published in the GitHub repository Lrinvl1203/world-class-web-design-os (8 stars, last pushed 15d ago), licensed MIT. It adds 45 tokens to every session and 292 once invoked, about $0.0002 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.
Other skills, from other repositories
design-md
Author/validate/export Google's DESIGN.md token spec files.
component-family-consistency
Buttons, inputs, pills, badges, calendars, and other interactive components form a visual family — they share the same border-radius, colour logic, shadow scale, border style, and spacing rhythm. Inconsistency between them breaks the sense of a coherent product. Use when building or reviewing a component library…
modular-scale-typography
Typography feels cohesive and intentional when font sizes follow a modular scale — a ratio-based sequence where every size is mathematically related to the others. Use when defining type scales, setting up design tokens, reviewing font size choices, or when typography feels inconsistent or arbitrary.
extract-design
Extract a complete design system — colors, typography, spacing, components, shadows, and W3C design tokens — from any live website using Dembrandt. Runs a headless browser against the URL and returns real computed values from the DOM. Use when you need a site's actual design tokens, want to reverse-engineer a visual…
algorithmic-color-palette
Derive a full UI colour palette algorithmically from one or two brand colours. Darker and lighter variants for interactive states, desaturated greys from the brand hue for borders and backgrounds, and semantic colours that feel coherent with the brand rather than generic. Use when building a colour system from scratch…
brand-visual-language
A brand's visual tone — playful or serious, rounded or angular — should be consistent across all UI elements. Shape language in typography, border-radius, and iconography communicates personality before a single word is read. Use when establishing a design system, choosing icon libraries, setting border-radius tokens…