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 card-twittergit 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/card-twitter)<a href="https://agentmods.dev/skills/nexu-io/open-design/card-twitter"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/card-twitter/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/card-twitter"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/card-twitter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- 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 | $0.00015 | $0.00522 |
| Opus 5 | $0.00008 | $0.00261 |
| Sonnet 5 | $0.00003 | $0.00104 |
| Haiku 4.5 | $0.00002 | $0.00052 |
Grade A, and why
card-twitter 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 7d 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
1 near-identical copy found in the catalogue:
- card-twitter — 100% identical, 0 lines differ
What it actually says
【模板: Twitter 分享卡】
- 容器
w-[1600px] h-[900px], 暗色 / 亮色二选一根据内容情绪。 - 中央一句 hero 金句 (text-6xl, font-semibold, 限 2-3 行)。
- 下方作者署名 + 头像占位 + handle。
- 左上角小标签 (类型: "Insight" / "Data" / "Quote")。
- 右下角品牌水印。
- 整张卡片有微妙的纹理 (grid 网格 / noise / dot pattern)。
- 截图后可直接配推文发出, 视觉简洁有力。
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.
- 7d ago First seen · 43 lines · 15 tokens per session scan A e5643bc2bd48
card-twitter is a skill published in the GitHub repository nexu-io/open-design (95,309 stars, last pushed today), licensed Apache-2.0. It adds 15 tokens to every session and 522 once invoked, about $0.0001 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.
Other skills, from other repositories
card-twitter
A design template for making image cards that share a quote or data point on Twitter, now called X. It uses a large central statement, author details, a small category label, and a brand mark.
social-x-post-card
A realistic X post card that displays a profile, handle, post text, optional quoted content or image area, and engagement figures such as likes, reposts, replies, and views. X is the social platform formerly known as Twitter.
card-twitter
A design template for making Twitter sharing cards with a large quote or data point, an author area, a small category label, a watermark, and a subtle background texture.
card-twitter
Twitter quote or data card designed to pair with a post.
card-twitter
Twitter quote or data card designed to pair with a post.
card-xiaohongshu
A layout template for making a series of swipeable Xiaohongshu knowledge cards. Xiaohongshu is a Chinese social platform where posts commonly use large, image-based slides.