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 frame-liquid-bg-herogit 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/frame-liquid-bg-hero)<a href="https://agentmods.dev/skills/nexu-io/open-design/frame-liquid-bg-hero"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/frame-liquid-bg-hero/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/frame-liquid-bg-hero"><img src="https://agentmods.dev/badge/skills/nexu-io/open-design/frame-liquid-bg-hero.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 | $0.00028 | $0.01260 |
| Opus 5 | $0.00014 | $0.00630 |
| Sonnet 5 | $0.00006 | $0.00252 |
| Haiku 4.5 | $0.00003 | $0.00126 |
Grade A, and why
frame-liquid-bg-hero 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 9d 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
2 near-identical copies found in the catalogue:
- frame-liquid-bg-hero — 100% identical, 0 lines differ
- frame-liquid-bg-hero — 100% identical, 0 lines differ
What it actually says
【模板: 流体背景 Hero】 【意图】可作为视频片头帧、SaaS landing 顶部 hero、海报底图。WebGL 流体感, 但用 CSS / canvas 退化绘制, 确保单文件可双击打开。Inspired by hyperframes vfx-liquid-background。
【画布】1920×1080 (横) 或 1080×1920 (竖), 二选一。背景占满。
【流体背景 — 3 种实现, 按用户偏好选】
- CSS 多层 radial-gradient 错位呼吸 (最稳, 默认推荐):
- 3-5 个大椭圆
radial-gradient(...), 颜色取自调色板。 - 每个椭圆套
@keyframes平移 + scale + hue-rotate, 周期 8-14s, 错峰; 整个画面叠mix-blend-mode: screen或overlay。 - 顶层加 1 层
backdrop-filter: blur(80px)让边缘更糊。
- 3-5 个大椭圆
- Canvas + simple perlin noise (中阶):
- 80 行 inline JS, 用
requestAnimationFrame画 metaballs 或 simplex noise field。 - 性能允许时启用,
prefers-reduced-motion时降回静态截图。
- 80 行 inline JS, 用
- WebGL fragment shader (高阶, 慎用):
- 用 jsdelivr CDN 引
regl或 inline plain WebGL。 - shader 写 domain-warp noise; 单个 quad, 一个 uniform
u_time。
- 用 jsdelivr CDN 引
【顶层文字层】
- 居中或左下: 一句巨型金句 (5-7vw, 衬线或粗 sans), 字体:
Source Serif Pro/Inter Tight/Manrope Black。 - 文字色用 paper white
#fafaf8或 ink, 取决于背景明暗; 加mix-blend-mode: difference让它在任何流体颜色上都可读。 - 副标 (小 sans, opacity 0.7) 一行。
- 底部可选 CTA chip 或 hairline + 元数据 row。
【调色 — 4 选 1, 不要彩虹】
- 🌅 Solar Peach —
#ffb18a+#f78b4c+#d97757, 暖橙桃。 - 🌊 Ocean Aqua —
#5ac8fa+#0a84ff+#1e3a8a, 海蓝。 - 🌌 Aurora Violet —
#a78bfa+#7c5cff+#1e1b4b, 极光紫。 - 🌿 Forest Mint —
#86efac+#34d399+#065f46, 苔森林。
【设计细节】
- 严禁: 多色彩虹 (>4 个色相)、PowerPoint 渐变、霓虹荧光叠加。
- 字体: 中文用
Noto Serif SC(display) /Noto Sans SC(副标)。 - 严禁外链图片; 全部 CSS + SVG + 可选 canvas。
- 必须用用户提供的金句 / 标题; 如果用户输入是数据 → 提炼一句 ≤ 18 字的金句。
- 单文件 HTML, 可被
prefers-reduced-motion关动效。
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.
- 9d ago First seen · 72 lines · 28 tokens per session scan A 2c0abcd5b579
frame-liquid-bg-hero is a skill published in the GitHub repository nexu-io/open-design (95,624 stars, last pushed today), licensed Apache-2.0. It adds 28 tokens to every session and 1,260 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
frame-liquid-bg-hero
A design template for a fluid, colorful background with large overlaid text, suitable for a video opening, website landing-page hero, or poster. It offers CSS, canvas, or WebGL approaches, with a static fallback for reduced motion or simpler use.
frame-liquid-bg-hero
A visual template for fluid-looking hero backgrounds made with CSS, canvas, or WebGL, with large text layered over the moving background.
frame-liquid-bg-hero
WebGL-style fluid displacement background with a quote overlay, suited to video intros, landing heroes, or posters.
frame-liquid-bg-hero
WebGL-style fluid displacement background with a quote overlay, suited to video intros, landing heroes, or posters.
frame-liquid-bg-hero
WebGL-style fluid displacement background with a quote overlay, suited to video intros, landing heroes, or posters.
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.