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 tranfu-labs/tranfu-skills --skill excalidraw-prdgit clone --depth 1 https://github.com/tranfu-labs/tranfu-skillsWrote 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/tranfu-labs/tranfu-skills/excalidraw-prd)<a href="https://agentmods.dev/skills/tranfu-labs/tranfu-skills/excalidraw-prd"><img src="https://agentmods.dev/badge/skills/tranfu-labs/tranfu-skills/excalidraw-prd/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/tranfu-labs/tranfu-skills/excalidraw-prd"><img src="https://agentmods.dev/badge/skills/tranfu-labs/tranfu-skills/excalidraw-prd.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 | $0.00040 | $0.00465 |
| Opus 5.5 | $0.00016 | $0.00186 |
| Sonnet 5.5 | $0.00008 | $0.00093 |
| Haiku 4.5 | $0.00004 | $0.00047 |
Grade A, and why
excalidraw-prd 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 1mo 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.
What it actually says
定义
| 名字 | 要求 |
|---|---|
| 页面 frame | MUST 用一个外围矩形作为页面边框；MUST 用一个 frame 包裹页面及其产品标注，并将页面名字作为该 frame 的文字；页面注释 MUST 位于页面边框外、该 frame 内。 |
| 产品标注 | 位于页面边框外、页面 frame 内，用于解释模块职责、状态边界、业务规则与恢复路径的结构化注释。 |
| 产品标注卡 | 由语义色边框、同色编号角标、黑色标题和灰色描述组成的结构化页面注释。 |
实施细则
| 场景 | 操作 |
|---|---|
| 页面跳转 | MUST 用从真实操作点指向目标页面的实线箭头直接表达；跨画布或首尾闭环时用长回程实线箭头。NEVER 另写说明段或重复流程图，除非用户明确指定。 |
| 产品标注 | MUST 将产品标注页面的标题写在页面矩形外。 |
| 产品标注 | MUST 呈现形式采用标注卡 |
| 产品标注卡 | 一种左右布局的结构化页面注释。左侧为语义色编号角标，右侧为纵向排列的黑色标题与灰色描述；卡片使用同语义色边框。 |
场景错误
| 场景 | 错误 |
|---|---|
| 页面 frame | 没有完全包裹所有的内容 |
| 页面 frame | frame 之间的间距过于拥挤 |
What ships with it
6 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.
- 1mo ago First seen · 35 lines · 40 tokens per session scan A 361d7301e3d1
excalidraw-prd is a skill published in the GitHub repository tranfu-labs/tranfu-skills (2 stars, last pushed 24d ago), licensed MIT. It adds 40 tokens to every session and 465 once invoked, about $0.0002 per session on Opus 5.5. 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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