OpenDesign is an open-source, local-first desktop app that lets coding agents create prototypes, dashboards, slide decks, images, video, and design systems as exportable files. It is used by people working with agent runtimes such as Claude Code, Codex, Cursor, and DeepSeek Harness. The catalogue add-ons extend the OpenDesign workflow with skills, instructions, commands, and plugins.
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 nexu-io/open-design --skill web-prototype-taste-softgit clone --depth 1 https://github.com/nexu-io/open-designWrote 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/nexu-io/open-design/web-prototype-taste-soft)<a href="https://agentmods.dev/skills/nexu-io/open-design/web-prototype-taste-soft"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/web-prototype-taste-soft/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/nexu-io/open-design/web-prototype-taste-soft"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/web-prototype-taste-soft.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 12 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00069 | $0.01190 |
| Opus 5 | $0.00034 | $0.00595 |
| Sonnet 5 | $0.00014 | $0.00238 |
| Haiku 4.5 | $0.00007 | $0.00119 |
Grade A, and why
web-prototype-taste-soft 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 5d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- web-prototype-taste-soft — 100% identical, 0 lines differ
- web-prototype-taste-soft — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Prototype — Soft Premium
For briefs that ask for "Apple-like", "Linear-tier", "premium consumer", "calm SaaS", or "$150k agency" finish. The aesthetic is soft, weighty, and obsessive about nested architecture.
Source
Distilled from Leonxlnx/taste-skill — skills/soft-skill/SKILL.md ("Vanguard UI Architect") with the haptic micro-aesthetics, double-bezel architecture, and motion choreography rules. See example.html in this directory for a fully-realized template.
Hard rules
- Canvas: silver-grey or warm cream (
#F2F2F0or#FDFBF7). Not pure white. - Type pairing: display in Geist / Plus Jakarta Sans / Cabinet Grotesk at heavy weight, body in the same family, monospace meta in Geist Mono.
- Display:
clamp(48px, 7vw, 96px),letter-spacing: -0.035em,line-height: 0.96. Heavy weight (700+). - Squircle radii:
border-radius: 28px–40px(rounded-[2rem]torounded-[2.5rem]) on major surfaces. - Double-bezel mandatory: every important card is a wrapper (
p-1.5, hairline border, soft outer shadow) containing an inner core with its own background and a concentric smaller radius (e.g., outer2rem, innercalc(2rem - 0.375rem)). - CTA = button-in-button: primary CTAs are full pills (
rounded-full px-6 py-3); the trailing arrow lives inside its own circular wrapper flush-right. - Ambient depth: one slow-drifting radial mesh blob behind hero,
opacity ≤ 0.18,pointer-events: none, fixed. - Eyebrow tag above each section header: pill, uppercase mono,
letter-spacing: 0.2em,text-[10px].
Banned
- Inter, Roboto, Helvetica, Open Sans.
- Generic 1px solid gray borders (use
border-black/5/ring-1 ring-black/5). shadow-md,shadow-lg, hard drop shadows. Only diffuse, wide-spread, low-opacity (0 20px 40px -15px rgba(0,0,0,0.05)).- Edge-to-edge sticky navbars glued to the top. Use a floating glass pill (
mt-6 mx-auto w-max rounded-full). - Linear or
ease-in-outtransitions. Usecubic-bezier(0.32, 0.72, 0, 1)or spring physics. h-screen(usemin-h-[100dvh]).- Animating
width/height/top/left. Onlytransformandopacity. - Pure black
#000. Use Zinc-950 / Off-Black.
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.
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.
- 5d ago First seen · 64 lines · 69 tokens per session scan A 95441b8bbec9
web-prototype-taste-soft is a skill published in the GitHub repository nexu-io/open-design (94,754 stars, last pushed yesterday), licensed Apache-2.0. It adds 69 tokens to every session and 1,190 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 2026-09-03.
Other skills, from other repositories
frame-flowchart-sticky
A single-file HTML template for showing a process or system as a whiteboard with coloured sticky notes, curved arrows, and optional mouse interactions.
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
saas-landing
A single-page SaaS landing page for a software product, with sections such as the hero, features, customer proof, pricing, FAQs, and a call to action. SaaS means software delivered online, usually by subscription.
web-proto-brutalist
A web-page style built around Swiss industrial print design, with oversized numbers, stark grids, black typography, red accents, and ASCII symbols.
web-proto-editorial
A minimalist editorial web style inspired by magazines, with warm colours, serif display type, simple borders, generous empty space, and small motion effects.
web-proto-soft
A web prototype style inspired by Apple's soft product interfaces, using cream or silver surfaces, rounded cards, layered edges, and subtle motion.