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/replit-decknpx skills add nexu-io/open-design --skill replit-deckgit 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/replit-deck)<a href="https://agentmods.dev/skills/nexu-io/open-design/replit-deck"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/replit-deck.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 | $0.00071 | $0.03269 |
| Opus 5 | $0.00036 | $0.01635 |
| Sonnet 5 | $0.00014 | $0.00654 |
| Haiku 4.5 | $0.00007 | $0.00327 |
Grade A, and why
replit-deck scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
$ curl -s localhost:7456/api/design-templates \ How it starts
The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Replit Deck Skill
Produce a single-file horizontal-swipe HTML deck in one of eight Replit-Slides themes. Every theme is a complete visual system — do not mix tokens across themes.
Resource map
replit-deck/
├── SKILL.md ← you're reading this
├── assets/
│ └── template.html ← seed: 8 themes via [data-theme=*], proven iframe-nav script (READ FIRST)
├── references/
│ ├── themes.md ← 8 themes: when-to-pick / do / don't / primary layouts
│ ├── layouts.md ← 10 paste-ready slide layouts, cross-theme
│ ├── components.md ← shared primitives (eyebrow, kpi-row, image-grid, meta-bar)
│ └── checklist.md ← P0/P1/P2 self-review + theme lock-in gate
└── examples/ ← four reference decks across the most contrasting themes
├── example-helix.html (SaaS board update · light minimal)
├── example-holm.html (legal fintech memo · cream editorial serif)
├── example-atlas.html (quarterly history chapter · black + vermilion)
└── example-bluehouse.html (real estate ROI · navy + gradient cards)
Workflow
Step 0 — Pre-flight (mandatory reads)
- Read
assets/template.htmlend-to-end. The[data-theme]blocks carry the tokens; the<script>at the bottom solves five iframe nav bugs — do not rewrite it. - Read
references/themes.md→ pick one theme that matches the user's brief. If the user already picked a theme viaod.inputs.theme, use that. - Read
references/layouts.md→ you'll copy<section>blocks from here. - Read
references/checklist.md→ P0 must pass before emit.
Step 1 — Commit to one theme
Write out loud (in the TodoWrite or plan section) which theme and why. Once picked, every slide uses that theme's tokens only. No swapping mid-deck. The <body data-theme="helix"> attribute is the single source of truth.
| Theme | Pick when |
|---|---|
helix |
SaaS board update, product metrics, neutral modern |
holm |
Legal memo, investor pre-read, serious / institutional |
vance |
Art portfolio, design catalog, photographer / sculptor |
bevel |
Fashion campaign, lookbook, Y2K / editorial attitude |
world-dark |
Policy report, finance analysis, premium dark |
world-mint |
Lighter companion of world-dark — ESG, wellness finance, sustainability |
atlas |
Long-form narrative, chapter deck, museum / archive aesthetic |
bluehouse |
Consumer product, real estate, lifestyle, colorful cards |
What ships with it
10 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.
- assets/template.html 21 KB
- examples/example-atlas.html 24 KB
- examples/example-bluehouse.html 24 KB
- examples/example-helix.html 21 KB
- examples/example-holm.html 26 KB
- examples/README.md 1.3 KB
- references/checklist.md 5.1 KB
- references/components.md 3.8 KB
- references/layouts.md 26 KB
- references/themes.md 14 KB
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 · 245 lines · 71 tokens per session scan A 3f8ed24a3024
replit-deck is a skill published in the GitHub repository nexu-io/open-design (94,103 stars, last pushed today), licensed Apache-2.0. It adds 71 tokens to every session and 3,269 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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奶油纸 + 锈红 + 蓝图网格 mask + 黑边硬卡片 + pipeline 盒.