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 critique-theatergit 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/critique-theater)<a href="https://agentmods.dev/skills/nexu-io/open-design/critique-theater"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/critique-theater/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/critique-theater"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/critique-theater.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 | $0.00035 | $0.00559 |
| Opus 5 | $0.00017 | $0.00280 |
| Sonnet 5 | $0.00007 | $0.00112 |
| Haiku 4.5 | $0.00003 | $0.00056 |
Grade A, and why
critique-theater 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 3d 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 — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design review
Before you hand an artifact over, review it against five dimensions and fix what falls short. This is a quality bar, not a performance: do the review, apply the fixes, and describe the outcome in ordinary prose.
The five dimensions
Judge the artifact you just produced from five angles. Each one owns its own scope; do not let a strength in one excuse a failure in another.
- Craft — layout, hierarchy, spacing, alignment, and visual rhythm. Does it read as deliberate work rather than a template with the words swapped out?
- Critique — does it actually solve the user's stated problem? Look for the weakest claim, the thinnest section, the thing a sceptical reviewer would attack first.
- Brand — does it follow the active design system's tokens, typography, and voice? A brand violation is a defect even when the result looks pleasant.
- Accessibility — contrast ratios, touch-target sizes, focus rings, labels on interactive controls and dialogs, keyboard reachability, sensible heading order.
- Copy — is the text specific, readable, and free of filler? Placeholder phrasing and marketing padding both count as defects.
What to do with the findings
Record each concrete defect and fix it in the same turn. A finding you cannot fix is worth stating plainly, with the reason, so the user can decide.
Keep iterating while defects remain and you still have room to work. Stop when the artifact clears all five dimensions, or when further rounds stop producing real improvements — whichever comes first. Three passes is a sensible ceiling.
OD_MAX_DEVLOOP_ITERATIONS caps the outer plugin pipeline stage; it is not
this review's round limit. A pipeline's critique.score signal is a
scheduler-facing projection, not something you should write into your answer.
How to report it
Write the outcome the way you would write any other part of your answer: plain prose, in the user's language, saying what you checked, what you fixed, and anything you deliberately left alone.
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.
- 3d ago Changed · -4 lines · +3 tokens per session dc0d2b0046d2
- 8d ago First seen · 60 lines · 32 tokens per session scan A 95b21b641e17
critique-theater is a skill published in the GitHub repository nexu-io/open-design (95,309 stars, last pushed today), licensed Apache-2.0. It adds 35 tokens to every session and 559 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.
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