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 Nikolahuang/nova-cli --skill excalidraw-presentation-generator-1762840128318git clone --depth 1 https://github.com/Nikolahuang/nova-cliWrote 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/nikolahuang/nova-cli/excalidraw-presentation-generator-1762840128318)<a href="https://agentmods.dev/skills/nikolahuang/nova-cli/excalidraw-presentation-generator-1762840128318"><img src="https://agentmods.dev/badge/skills/nikolahuang/nova-cli/excalidraw-presentation-generator-1762840128318/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/nikolahuang/nova-cli/excalidraw-presentation-generator-1762840128318"><img src="https://agentmods.dev/badge/skills/nikolahuang/nova-cli/excalidraw-presentation-generator-1762840128318.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00097 | $0.01772 |
| Opus 5 | $0.00048 | $0.00886 |
| Sonnet 5 | $0.00019 | $0.00354 |
| Haiku 4.5 | $0.00010 | $0.00177 |
Grade A, and why
excalidraw-presentation-generator 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 10d 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 — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw 演示文稿生成器
这个 Skill 帮助你创建专业的 Excalidraw 演示文稿,基于实战总结的最佳实践。
🎯 何时使用
- 需要创建技术演示文稿
- 制作教学材料或培训内容
- 可视化复杂概念或流程
- 创建架构图或系统设计图
- 准备技术分享或讲座
📋 最佳实践总结
1. 视觉设计原则
颜色系统
- 为不同主题使用一致的配色方案
- 建议配色:
- 蓝色系 (#1971c2, #e7f5ff) - 概念介绍
- 绿色系 (#2f9e44, #d3f9d8) - 成功案例/推荐做法
- 橙色系 (#f08c00, #fff4e6) - 重要提示/对比
- 红色系 (#e03131, #ffe3e3) - 警告/避坑指南
- 紫色系 (#7950f2, #f3f0ff) - 代码示例/技术细节
布局策略
- 使用箭头连接逻辑流程
- 左右分栏对比不同概念
- 纵向滚动设计,便于逐步讲解
- 每个概念用独立的矩形卡片包裹
- 合理的间距:相关元素间距 20-50px,不同区块间距 80-150px
字体层次
- 标题:48-56px(粗体)
- 副标题/节标题:28-36px
- 正文:18-24px
- 代码/注释:14-18px(等宽字体 fontFamily: 3)
2. 内容组织
开场结构
- 吸引人的标题
- 副标题用类比或比喻
- 快速说明核心价值
主体内容
- 概念解释 → 实战示例 → 最佳实践 → 总结
- 每3-4个卡片后添加箭头过渡
- 理论与实践平衡(建议 40% 理论 + 60% 实战)
实战示例格式
┌─────────────────┐ ┌──────────────────┐
│ 代码/配置 │ │ 效果/演示 │
│ (左侧灰色背景) │ │ (右侧彩色背景) │
└─────────────────┘ └──────────────────┘
3. Excalidraw JSON 规范
必需字段
{
"type": "excalidraw",
"version": 2,
"source": "https://excalidraw.com",
"elements": [...],
"appState": {
"gridSize": null,
"viewBackgroundColor": "#ffffff"
},
"files": {}
}
元素通用字段
id: 唯一标识符type: "text" | "rectangle" | "arrow" | "ellipse" 等x,y: 坐标位置width,height: 尺寸strokeColor: 边框颜色backgroundColor: 填充颜色fontSize: 字体大小(仅文本)fontFamily: 1=手写体, 3=等宽字体roughness: 0=光滑, 1=手绘风格
4. 趣味性和可读性
使用 Emoji
- 💡 概念/想法
- 🚀 开始/行动
- ⚡ 重点/对比
- ✅ 推荐做法
- ❌ 避免做法
- 📝 示例
- 🔍 详细说明
- 🎯 目标/要点
信息密度
- 5分钟讲解:约15-20个视觉元素
- 10-15分钟讲解:约30-40个视觉元素
- 每屏不超过3个主要概念
5. 常见模式
对比卡片
┌─────────────┐ ┌─────────────┐
│ ✅ 推荐 │ │ ❌ 不推荐 │
│ - 清晰 │ │ - 模糊 │
│ - 具体 │ │ - 宽泛 │
└─────────────┘ └─────────────┘
流程图
┌──────┐
│ 步骤1 │
└───┬──┘
↓
┌──────┐
│ 步骤2 │
└───┬──┘
↓
┌──────┐
│ 步骤3 │
└──────┘
代码展示
- 使用灰色背景 (#f8f9fa)
- 等宽字体 (fontFamily: 3)
- 左侧展示代码,右侧展示效果
🔧 技术细节
坐标系统
- 从左上角 (0, 0) 开始
- 向右 x 增加,向下 y 增加
- 建议起始坐标:x=100, y=50
What ships with it
4 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.
- 10d ago First seen · 200 lines · 97 tokens per session scan A c191f7e36829
excalidraw-presentation-generator is a skill published in the GitHub repository Nikolahuang/nova-cli (14 stars, last pushed 5mo ago), licensed MIT. It adds 97 tokens to every session and 1,772 once invoked, about $0.0005 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 2026-08-30.
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