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 gamified-appgit 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/gamified-app)<a href="https://agentmods.dev/skills/nexu-io/open-design/gamified-app"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/gamified-app/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/gamified-app"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/gamified-app.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 | $0.00117 | $0.01183 |
| Opus 5 | $0.00059 | $0.00592 |
| Sonnet 5 | $0.00023 | $0.00237 |
| Haiku 4.5 | $0.00012 | $0.00118 |
Grade A, and why
gamified-app 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 10d 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
3 near-identical copies found in the catalogue:
- gamified-app — 100% identical, 0 lines differ
- gamified-app — 97% identical, 1 lines differ
- gamified-app — 97% identical, 1 lines differ
How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gamified App Skill
Produce a multi-screen mobile prototype on a single dark showcase page. Three phone frames side-by-side, each one its own moment in the journey.
Workflow
- Read the active DESIGN.md (injected above). For gamified apps, lean on bold display type for headlines and a brighter, broader palette than most products — quests look like quests because the colors do.
- Pick the brand + value prop from the brief. Generate real quest names (e.g. "Body — 20-min strength: pushups & planks", "Read — Four Thousand Weeks", "Listen — Huberman Lab · Sleep Architecture", "Nourish — Cook a high-protein lunch", "Mind — 10-min focus meditation", "Watch — The Bear · S3 E4").
- Stage — full-bleed dark page (near-black
#0e0d0cor DS dark token) with a soft top spotlight gradient. Above the phones, a small caption row: "HI-FI PROTOTYPE · IPHONE" left, brand wordmark right, both in mono. - Phones — three 360×780 phone frames in a horizontal row (wraps to
stack on narrow viewports). Each phone:
- 12px black bezel, 44px corner radius, dynamic-island notch.
- Status bar (time / signal / battery).
- Phone-specific content (below).
- Bottom tab bar with 5 icons (Today, Library, Stats, ⊕ central CTA, Profile). Active tab in accent.
- Phone 1 — cover poster (sales/value prop):
- Status bar.
- HI-FI PROTOTYPE · IPHONE eyebrow.
- Big display headline ("Daily quests for becoming a better human."), accent on "becoming".
- 1–2 sentence body in muted serif/sans.
- Mono tip line ("Tap quests to open detail. Toggle [theme] in the toolbar to switch theme & layout.")
- Subtle scrolling teaser of the next screen at the bottom edge.
- Phone 2 — today's quests dashboard (the hero screen):
- Greeting "Good morning, Sam" + small XP-bell ringing.
- Level ribbon — "LV 14 · Level 14 · 1648 / 2480 XP" with a progress bar inside a glassmorphic ribbon.
- Sub-line: "8 quests waiting · earn 430 XP today".
- 3×2 grid of quest tiles. Each tile: rounded corner, pastel accent color, glyph chip in top-left, title, mini-meta line, "+NN XP" pill in bottom-right.
- Bottom tab bar.
- Phone 3 — quest detail:
- Back arrow + screen title ("Quest").
- Hero block with the quest's accent color, big serif quest title ("Body — strength"), short narrative body, "REWARD +90 XP" stamp.
- Steps checklist (3–4 micro-tasks, one done, two pending).
- Big primary CTA "Start quest" pill at the bottom in accent.
- Write a single HTML document:
<!doctype html>through</html>, CSS inline.- All in CSS — no images. Use
linear-gradientand inline SVG glyphs for tile chips and tab icons. data-od-idon stage, each phone, each frame's regions.
- Self-check:
- Three frames, each with a distinct purpose. Not three copies of the same screen.
- Tile colors don't overpower — each quest tile uses a different pastel against the same neutral surface.
- Reads as gamified and adult — playful, not childish.
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.
- 10d ago First seen · 109 lines · 117 tokens per session scan A 0fbc09046b5b
gamified-app is a skill published in the GitHub repository nexu-io/open-design (95,021 stars, last pushed today), licensed Apache-2.0. It adds 117 tokens to every session and 1,183 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 2026-08-30.
Other skills, from other repositories
mobile-app
A design template for a single-screen iPhone 15 Pro app mockup, including the phone frame, status bar, app header, main content, and bottom navigation.
mobile-onboarding
A visual template showing three mobile-app onboarding screens side by side: a splash screen, a feature introduction, and sign-in.
deck-guizang-editorial
A slide-deck template combining electronic-magazine layouts with an e-ink, printed-paper look. It offers five fixed color palettes and ten reusable page layouts for storytelling and editorial content.
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.
frame-macos-notification
A template for realistic macOS Big Sur-style notification banners, with an app icon, title, message, and optional action button.
social-reddit-card
A realistic Reddit post card with a community name, author details, title, content, vote controls, comment count, awards, and sharing actions. Reddit is a discussion platform organized into topic-based communities called subreddits.