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 ve-midnight-editorialgit 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/ve-midnight-editorial)<a href="https://agentmods.dev/skills/nexu-io/open-design/ve-midnight-editorial"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/ve-midnight-editorial/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/ve-midnight-editorial"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/ve-midnight-editorial.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 | $0.00040 | $0.03117 |
| Opus 5 | $0.00020 | $0.01558 |
| Sonnet 5 | $0.00008 | $0.00623 |
| Haiku 4.5 | $0.00004 | $0.00312 |
Grade A, and why
ve-midnight-editorial 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 8d 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 — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Midnight Editorial(午夜金辉)
A single-aesthetic deck plugin: the midnight-editorial preset from the
upstream MIT-licensed
nicobailon/visual-explainer
skill (templates/slide-deck.html), pinned and shipped as one self-contained
seed — example.html. The upstream mermaid diagram slide has been replaced by
a pure CSS/SVG pipeline page; the deck has zero external JS dependencies
(Google Fonts @import is the only external reference).
Signature combination (what makes this skin this skin):
- Deep navy + warm gold —
#0f1729page,#d4a73aaccent, parchment text#e8e4d8. Cinematic, magazine-grade, dramatic. - Serif display → mono label drop — Instrument Serif at up to 120px
(
clamp(48px,10vw,120px), weight 400, -2px tracking, 0.95 line-height) falling directly to 13–14px uppercase JetBrains Mono labels with 1.5px letter-spacing. No intermediate sans anywhere. - Gold radial accent glow — every content slide carries one
radial-gradient(ellipse at X% Y%, var(--accent-dim) 0%, transparent ~40%)inline background, with the ellipse anchor moving per slide. - Gold SVG corner marks + ghost numerals — 2px gold corner line marks at
opacity 0.15 on the title slide; dividers carry a ghost
clamp(100px,22vw,260px)gold numeral at opacity 0.06. - Cinematic staggered transitions — slides enter with
fade + translateY(40px) + scale(0.98)oncubic-bezier(0.16,1,0.3,1);.revealchildren stagger at 0.1s increments (max 6). - SlideEngine dual theme — explicit dark/light toggle (T key + ◐ chrome
button,
html[data-theme]), defaulting to the OS preference. The light mode is a locked cream/gold skin, not an afterthought.
Start from example.html. Replace content only — never rewrite the design
system or the runtime script, and never introduce colors or fonts outside the
token sheets below.
Locked token sheet — dark (default)
:root {
--font-body: 'Instrument Serif', Georgia, serif;
--font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
--bg: #0f1729;
--surface: #162040;
--surface2: #1d2b52;
--surface-elevated: #243362;
--border: rgba(200, 180, 140, 0.08);
--border-bright: rgba(200, 180, 140, 0.16);
--text: #e8e4d8;
--text-dim: #9a9484;
--accent: #d4a73a;
--accent-dim: rgba(212, 167, 58, 0.1);
--code-bg: #0a0f1e;
--code-text: #d4d0c4;
--green: #4ade80; --green-dim: rgba(74, 222, 128, 0.1);
--red: #f87171; --red-dim: rgba(248, 113, 113, 0.1);
--blue: #60a5fa; --blue-dim: rgba(96, 165, 250, 0.1);
}
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.
- 8d ago First seen · 210 lines · 40 tokens per session scan A 76aece09f960
ve-midnight-editorial is a skill published in the GitHub repository nexu-io/open-design (95,624 stars, last pushed today), licensed Apache-2.0. It adds 40 tokens to every session and 3,117 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 2026-09-03.
Other skills, from other repositories
ve-midnight-editorial
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html-ppt-zhangzara-long-table
Open Design's unit-economics and BYOK cost model: the assumptions, the sensitivity, and why it scales. Built as a decision-grade data & finance deck for CFO, investors.
hps-y2k-chrome
Open Design's KPI decision brief: activation and retention drivers, what's working, and the one metric to move next. Built as a decision-grade data & finance deck for CRO, RevOps, leadership.
html-ppt-weekly-report
Open Design's weekly growth review: stars, installs, activation — the number, the driver, and the recommended move. Built as a decision-grade data & finance deck for growth & product team.
weekly-update
Open Design's weekly metrics standup: this week's numbers, the one anomaly, and the single decision it forces. Built as a decision-grade data & finance deck for ops & growth team.