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 fs-electric-studiogit 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/fs-electric-studio)<a href="https://agentmods.dev/skills/nexu-io/open-design/fs-electric-studio"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/fs-electric-studio/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/fs-electric-studio"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/fs-electric-studio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00053 | $0.02892 |
| Opus 5 | $0.00026 | $0.01446 |
| Sonnet 5 | $0.00011 | $0.00578 |
| Haiku 4.5 | $0.00005 | $0.00289 |
Grade A, and why
fs-electric-studio 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Electric Studio · 钴蓝工作室
Bold, clean, professional, high-contrast split-panel decks. Theme locked to the Electric Studio preset (section 2 of STYLE_PRESETS.md) from the MIT-licensed zarazhangrui/frontend-slides.
Start from example.html in this plugin folder. It is the proven seed: keep its stage CSS (full viewport-base.css contents), the split-panel shell, the corner-marks chrome, the :root tokens, and the entire SlidePresentation controller script verbatim — replace slide content only. Do not rewrite the design; do not introduce any color or font outside this spec.
Locked design tokens (:root — complete list, no additions)
:root {
--bg-dark: #0a0a0a; /* edge bar, dark text, stage letterbox */
--bg-white: #ffffff; /* upper panel */
--accent-blue: #4361ee; /* cobalt panel, chips, bars, numerals */
--text-dark: #0a0a0a;
--text-light: #ffffff;
--text-dark-soft: rgba(10, 10, 10, 0.58);
--text-light-soft: rgba(255, 255, 255, 0.72);
--line-dark: rgba(10, 10, 10, 0.14);
--line-light: rgba(255, 255, 255, 0.28);
--blue-soft: rgba(67, 97, 238, 0.10); /* tick boxes, outline bar fills */
--stage-bg: var(--bg-dark);
--slide-bg: var(--bg-white);
--font: 'Manrope', sans-serif; /* the ONLY typeface */
--title-size: 152px;
--h2-size: 88px;
--lede-size: 33px;
--body-size: 27px;
--slide-pad-x: 110px;
--edge-bar-h: 14px;
--ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
--duration-normal: 0.7s;
}
Forbidden: any other hue, gradients, purple/indigo (#6366f1), warm accents, photography, illustrations, drop shadows, rounded hero cards. The palette is exactly white / cobalt / near-black plus their soft alphas.
Typography (all Manrope, Google Fonts weights 400/500/800)
- Display / H2 — Manrope 800, tight negative letter-spacing (
-0.025emto-0.035em), line-height ≤ 1.08. Title ~152px, H2 60–88px. A terminal period in--accent-blue(<span class="blue">.</span>) is a signature flourish. - Quote hero — Manrope 800 at ~92px with an oversized cobalt
“mark (~220px): quote typography is the deck's hero visual. - Kicker — 22px, 800, uppercase,
letter-spacing: 0.34em, cobalt on white / white on cobalt. - Body / lede — 400/500, 25–33px. Support copy on the white panel uses
--text-dark-soft; body copy on the cobalt panel stays full--text-lightfor WCAG AA contrast (the soft light alpha is reserved for bold uppercase chrome: marks, hints, separators). - Marks — 19px, 800, uppercase,
letter-spacing: 0.22em. - Never substitute Inter, Roboto, Arial, serifs, or any second typeface.
What ships with it
3 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.
- 7d ago First seen · 156 lines · 53 tokens per session scan A 729b63f5fb9f
fs-electric-studio is a skill published in the GitHub repository nexu-io/open-design (95,309 stars, last pushed today), licensed Apache-2.0. It adds 53 tokens to every session and 2,892 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.
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