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 velar-luxury-real-estategit 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/velar-luxury-real-estate)<a href="https://agentmods.dev/skills/nexu-io/open-design/velar-luxury-real-estate"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/velar-luxury-real-estate/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/velar-luxury-real-estate"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/velar-luxury-real-estate.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 | $0.00119 | $0.03160 |
| Opus 5 | $0.00060 | $0.01580 |
| Sonnet 5 | $0.00024 | $0.00632 |
| Haiku 4.5 | $0.00012 | $0.00316 |
Grade A, and why
velar-luxury-real-estate 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 — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Velar. — Luxury Real Estate Landing Page
Produce a single-page, cinematic luxury real-estate landing page. A complete, rendered reference implementation ships beside this skill at example.html — start from it. Copy example.html, then adjust copy and data; do not rewrite the choreography or invent a new visual language. The seed already encodes the exact tokens, preloader typewriter, scroll-driven house animation, sticky dark stats band, count-up, and hover-expand gallery described below.
This is the authoritative build brief. Follow it exactly — the named colors, fonts, timings, image URLs, and the scroll-math are locked.
Inlined image (critical): example.html ships the building/house silhouette (HOUSE_IMG, originally res.cloudinary.com/.../building_bzziky.png) as an inlined data:image/webp;base64,… URI — keep it exactly as-is. The 5 cloudfront gallery .mp4 videos and the BG_IMG higgs.ai hero background stay as remote URLs (large stable CDNs); the cloudinary host is the one to inline because it is the load-bearing, repeatedly-scaled centerpiece asset.
Stack
- Default output: a single self-contained HTML file (the
example.htmlseed) using vanilla CSS + JS. It already includes everything inline. - If the user explicitly asks for the React project: port the seed faithfully to React 18 + TypeScript + Vite + Tailwind CSS with only
lucide-reactfor icons (the hamburger→X). All animation logic lives in a singlesrc/App.tsxusinguseState,useEffect,useRef,useCallback, andIntersectionObserver. No other libraries. Do not change the design while porting.
Global setup — locked
- Page background
#f5f0ea(warm off-white). Body wrapperoverflow-x: clip. - Fonts via
@importin an inline<style>: Syne (400, 700, 800, 900) + Inter (300, 400, 500, 600) from Google Fonts. - Constants:
GRASS_GREEN = '#213138'(preloader bg + default logo color),FULL_TEXT = 'Velar.',HOUSE_IMG(inlined data URI in the seed),BG_IMG(higgs.ai hero bg), and the 5 cloudfront gallery videos (in order — keep them).
What ships with it
2 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 · 100 lines · 119 tokens per session scan A 3c778e343159
velar-luxury-real-estate is a skill published in the GitHub repository nexu-io/open-design (95,624 stars, last pushed today), licensed Apache-2.0. It adds 119 tokens to every session and 3,160 once invoked, about $0.0006 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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