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 huashu-luxe-whitespacegit 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/huashu-luxe-whitespace)<a href="https://agentmods.dev/skills/nexu-io/open-design/huashu-luxe-whitespace"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/huashu-luxe-whitespace/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/huashu-luxe-whitespace"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/huashu-luxe-whitespace.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 | $0.00042 | $0.03117 |
| Opus 5 | $0.00021 | $0.01558 |
| Sonnet 5 | $0.00008 | $0.00623 |
| Haiku 4.5 | $0.00004 | $0.00312 |
Grade A, and why
huashu-luxe-whitespace 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 — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Luxe Whitespace · 奢华留白
Produce a single-file, quiet-luxury deck. You are typesetting for a
maison, not a startup: every page breathes, numbers float in ultra-thin
weights, and gold appears only as a hairline or a decimal point — never as a
surface. The visual system, canvas contract, and navigation runtime are
locked by example.html. Start from example.html, replace content only —
do not rewrite the design or the script. Do not introduce any color or font
outside this spec.
Adapted from the ppt-build showcase of
huashu-design by 花叔
(alchaincyf), MIT licensed. The upstream file is a single benchmark page;
this plugin extends it into a full multi-section deck while preserving its
DNA: the off-white field, the thin floating metrics, the gold-vs-grey
comparison bars, and the gradient hairline separators.
Hard spec (locked — violating any line is a regression)
Canvas & runtime
- One
<div id="stage">fixed at 1920 × 1080 px, centered withposition: fixed; top: 50%; left: 50%; afit()function appliestranslate(-50%, -50%) scale(min(innerWidth/1920, innerHeight/1080))on load andresize. All inner layout in px — the scaler owns responsiveness. - Each page is one
<section class="slide">inside#stagewith adata-screen-label="01 封面"-style label and the locked page frame:padding: 64px 96px 48px 96px, flex column,.top-rowchrome at the top and.bottom-section(insight text + brand mark) pinned to the bottom viamargin-top: auto. Exactly one slide carries.active. - Navigation (keep the script verbatim):
←/↑/PageUpprevious,→/↓/Space/PageDownnext,Home/Endfirst/last;#/Nhash routing (1-indexed) read on load +hashchange, written viahistory.replaceState; click left third = back, rest = forward; the script also builds the gold slide-dot indicator into#dotsand syncs it ingo(). Counter pill bottom-right, key-hint bottom-left. No external JS, no build step — the file must open inside a sandboxed iframe.
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 · 191 lines · 42 tokens per session scan A ab1ace546338
huashu-luxe-whitespace is a skill published in the GitHub repository nexu-io/open-design (95,624 stars, last pushed today), licensed Apache-2.0. It adds 42 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
huashu-luxe-whitespace
A market-entry study for a luxury skincare brand entering Asia — segmentation, positioning, channel, and the phased plan. Built as a decision-grade consulting deck for client leadership.
html-ppt
For consulting delivery work: turn diagnosis, frameworks, and project work into a client-adoptable action plan. Built around the core query "consulting-final-deck", with engagement manager judgment, buyer-ready proof, and this outcome: accept the recommendation and commit owners to the roadmap.
huashu-golden-circle
A brand-repositioning strategy for a heritage coffee chain — why, how, what — the governing idea and the moves to prove it. Built as a decision-grade consulting deck for client CMO, board.
html-ppt-zhangzara-mat
A margin-recovery diagnosis for a regional grocery chain — the governing thought, the driver tree, the priorities, and the roadmap. Built as a decision-grade consulting deck for client sponsor, steering committee.
html-ppt-zhangzara-soft-editorial
A digital-transformation roadmap for a legacy insurer — the diagnosis, the sequenced bets, and the operating rhythm to land them. Built as a decision-grade consulting deck for client executives.
ppt-keynote
An operating-model redesign for a scaling logistics firm — the diagnosis, the target model, and the transition roadmap. Built as a decision-grade consulting deck for client sponsor, ops leaders.