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 agentmods add skills/nexu-io/open-design/html-pptnpx skills add nexu-io/open-design --skill html-pptgit 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/html-ppt)<a href="https://agentmods.dev/skills/nexu-io/open-design/html-ppt"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/html-ppt.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00061 | $0.03991 |
| Opus 5 | $0.00030 | $0.01996 |
| Sonnet 5 | $0.00012 | $0.00798 |
| Haiku 4.5 | $0.00006 | $0.00399 |
Grade A, and why
html-ppt 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 2d 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 — 269 lines — stays where its author put it; the contents beside it link to each section on GitHub.
html-ppt — HTML PPT Studio
Author professional HTML presentations as static files. One theme file = one
look. One layout file = one page type. One animation class = one entry effect.
All pages share a token-based design system in assets/base.css.
Install
npx skills add https://github.com/lewislulu/html-ppt-skill
One command, no build. Pure static HTML/CSS/JS with only CDN webfonts.
What the skill gives you
- 36 themes (
assets/themes/*.css) — minimal-white, editorial-serif, soft-pastel, sharp-mono, arctic-cool, sunset-warm, catppuccin-latte/mocha, dracula, tokyo-night, nord, solarized-light, gruvbox-dark, rose-pine, neo-brutalism, glassmorphism, bauhaus, swiss-grid, terminal-green, xiaohongshu-white, rainbow-gradient, aurora, blueprint, memphis-pop, cyberpunk-neon, y2k-chrome, retro-tv, japanese-minimal, vaporwave, midcentury, corporate-clean, academic-paper, news-broadcast, pitch-deck-vc, magazine-bold, engineering-whiteprint - 15 full-deck templates (
templates/full-decks/<name>/) — complete multi-slide decks with scoped.tpl-<name>CSS. 8 extracted from real-world decks (xhs-white-editorial, graphify-dark-graph, knowledge-arch-blueprint, hermes-cyber-terminal, obsidian-claude-gradient, testing-safety-alert, xhs-pastel-card, dir-key-nav-minimal), 7 scenario scaffolds (pitch-deck, product-launch, tech-sharing, weekly-report, xhs-post 3:4, course-module, presenter-mode-reveal — 演讲者模式专用) - 31 layouts (
templates/single-page/*.html) with realistic demo data - 27 CSS animations (
assets/animations/animations.css) viadata-anim - 20 canvas FX animations (
assets/animations/fx/*.js) viadata-fx— particle-burst, confetti-cannon, firework, starfield, matrix-rain, knowledge-graph (force-directed), neural-net (pulses), constellation, orbit-ring, galaxy-swirl, word-cascade, letter-explode, chain-react, magnetic-field, data-stream, gradient-blob, sparkle-trail, shockwave, typewriter-multi, counter-explosion - Keyboard runtime (
assets/runtime.js) — arrows, T (theme), A (anim), F/O, S (presenter mode: magnetic-card popup with CURRENT / NEXT / SCRIPT / TIMER cards), N (notes drawer), R (reset timer in presenter) - FX runtime (
assets/animations/fx-runtime.js) — auto-inits[data-fx]on slide enter, cleans up on leave - Showcase decks for themes / layouts / animations / full-decks gallery
- Managed Chromium render script for PNG export
What ships with it
60 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.
- .clawscan-allow 623 B
- assets/animations/animations.css 7.9 KB
- assets/animations/fx-runtime.js 3.1 KB runs code
- assets/animations/fx/_util.js 1.9 KB runs code
- assets/animations/fx/chain-react.js 1.4 KB runs code
- assets/animations/fx/confetti-cannon.js 1.5 KB runs code
- assets/animations/fx/constellation.js 1.3 KB runs code
- assets/animations/fx/counter-explosion.js 2.3 KB runs code
- assets/animations/fx/data-stream.js 1.5 KB runs code
- assets/animations/fx/firework.js 1.6 KB runs code
- assets/animations/fx/galaxy-swirl.js 1.0 KB runs code
- assets/animations/fx/gradient-blob.js 1.4 KB runs code
- assets/animations/fx/knowledge-graph.js 2.4 KB runs code
- assets/animations/fx/letter-explode.js 2.0 KB runs code
- assets/animations/fx/magnetic-field.js 1.3 KB runs code
- assets/animations/fx/matrix-rain.js 1.1 KB runs code
- assets/animations/fx/neural-net.js 2.6 KB runs code
- assets/animations/fx/orbit-ring.js 1.3 KB runs code
- assets/animations/fx/particle-burst.js 1.2 KB runs code
- assets/animations/fx/shockwave.js 1.3 KB runs code
- assets/animations/fx/sparkle-trail.js 1.9 KB runs code
- assets/animations/fx/starfield.js 990 B runs code
- assets/animations/fx/typewriter-multi.js 2.1 KB runs code
- assets/animations/fx/word-cascade.js 1.6 KB runs code
- assets/base.css 8.0 KB
- assets/fonts.css 889 B
- assets/runtime.js 36 KB runs code
- assets/themes/academic-paper.css 1.2 KB
- assets/themes/arctic-cool.css 673 B
- assets/themes/aurora.css 1.1 KB
- assets/themes/bauhaus.css 719 B
- assets/themes/blueprint.css 956 B
- assets/themes/catppuccin-latte.css 663 B
- assets/themes/catppuccin-mocha.css 660 B
- assets/themes/corporate-clean.css 949 B
- assets/themes/cyberpunk-neon.css 1.3 KB
- assets/themes/dracula.css 650 B
- assets/themes/editorial-serif.css 863 B
- assets/themes/engineering-whiteprint.css 1.3 KB
- assets/themes/glassmorphism.css 1.1 KB
- assets/themes/gruvbox-dark.css 635 B
- assets/themes/japanese-minimal.css 1004 B
- assets/themes/magazine-bold.css 1.1 KB
- assets/themes/memphis-pop.css 967 B
- assets/themes/midcentury.css 920 B
- assets/themes/minimal-white.css 760 B
- assets/themes/neo-brutalism.css 792 B
- assets/themes/news-broadcast.css 1.1 KB
- assets/themes/nord.css 628 B
- assets/themes/pitch-deck-vc.css 1.2 KB
- assets/themes/rainbow-gradient.css 839 B
- assets/themes/retro-tv.css 1.2 KB
- assets/themes/rose-pine.css 634 B
- assets/themes/sharp-mono.css 739 B
- assets/themes/soft-pastel.css 665 B
- assets/themes/solarized-light.css 645 B
- assets/themes/sunset-warm.css 675 B
- assets/themes/swiss-grid.css 929 B
- assets/themes/terminal-green.css 836 B
- assets/themes/tokyo-night.css 635 B
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.
- 2d ago First seen · 269 lines · 61 tokens per session scan A b5795fce89e2
html-ppt is a skill published in the GitHub repository nexu-io/open-design (94,103 stars, last pushed today), licensed Apache-2.0. It adds 61 tokens to every session and 3,991 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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