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-brutalistgit 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-brutalist)<a href="https://agentmods.dev/skills/nexu-io/open-design/web-prototype-taste-brutalist"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/web-prototype-taste-brutalist/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-brutalist"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/web-prototype-taste-brutalist.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 14 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 | $0.00070 | $0.01033 |
| Opus 5 | $0.00035 | $0.00517 |
| Sonnet 5 | $0.00014 | $0.00207 |
| Haiku 4.5 | $0.00007 | $0.00103 |
Grade A, and why
web-prototype-taste-brutalist 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 6d 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-brutalist — 94% identical, 2 lines differ
- web-prototype-taste-brutalist — 86% identical, 4 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 — Industrial Brutalist (Swiss Print)
For briefs that ask for "editorial", "newspaper", "agency portfolio", "Swiss design", "manifesto site", or anywhere the goal is to project rigor and physicality rather than friendliness. This skill commits to ONE substrate (light Swiss print) — never mix with the dark CRT mode in the same artifact.
Source
Distilled from Leonxlnx/taste-skill — skills/brutalist-skill/SKILL.md §2.1 (Swiss Industrial Print). For decks that lean into the dark CRT mode, see design-templates/html-ppt-taste-brutalist/.
Hard rules
- Substrate: unbleached newsprint
#F4F4F0or#EAE8E3. Foreground#050505carbon ink. - Accent: ONE color — aviation/hazard red
#E61919. Used on dividing rules, strikes, alerts. Never as a fill on large surfaces. - Display type: heavy neo-grotesque (Archivo Black / Inter ExtraBold/Black / Neue Haas Grotesk Black). Fluid scale
clamp(4rem, 10vw, 15rem). Tracking-0.04em. Leading0.88. Uppercase only. - Micro type: monospace (JetBrains Mono / IBM Plex Mono). Fixed
10–13px. Tracking0.1em. Uppercase. Used for navigation, metadata, captions, coordinates. - Geometry:
border-radius: 0everywhere. 90° corners only. - Grid: visible CSS grid with
gap: 1pxover an ink-colored background to render mathematically perfect 1px dividers. - Negative space: asymmetric — hero has a viewport-bleeding numeral or letterform; data clusters are tightly packed.
- ASCII syntax: decorate sections with
[ LABEL ],>>>,///, registration®/ trademark™as structural ornament.
Banned
border-radiusabove 0.- Drop shadows, gradients, glassmorphism, glows.
- Centred body text. Justify or hard-left only.
- Color other than ink, paper, and the hazard red.
- Sans-serif body fonts other than Inter/Archivo/Plex/Mono. No "premium" grotesques here — this aesthetic predates them.
- Curved or "soft" iconography.
- AI cliché copy. Use clipped, declarative print-magazine voice.
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.
- 6d ago First seen · 64 lines · 70 tokens per session scan A 4b62f31102fd
web-prototype-taste-brutalist is a skill published in the GitHub repository nexu-io/open-design (95,021 stars, last pushed today), licensed Apache-2.0. It adds 70 tokens to every session and 1,033 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.