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 ace3000chao/book2startup --skill cash-conversion-cyclegit clone --depth 1 https://github.com/ace3000chao/book2startupWrote 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/ace3000chao/book2startup/cash-conversion-cycle)<a href="https://agentmods.dev/skills/ace3000chao/book2startup/cash-conversion-cycle"><img src="https://agentmods.dev/badge/skills/ace3000chao/book2startup/cash-conversion-cycle/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/ace3000chao/book2startup/cash-conversion-cycle"><img src="https://agentmods.dev/badge/skills/ace3000chao/book2startup/cash-conversion-cycle.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 | $0.00110 | $0.02431 |
| Opus 5.5 | $0.00044 | $0.00972 |
| Sonnet 5.5 | $0.00022 | $0.00486 |
| Haiku 4.5 | $0.00011 | $0.00243 |
Grade A, and why
Cash Conversion Cycle（现金转换周期） 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.
How it starts
The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cash Conversion Cycle（现金转换周期）
R — 原文 (Reading)
"It's a technical term for how long it takes, after you spend a dollar/euro/yen on rent, utilities, payroll, inventory, marketing, etc., for it to make its way through your business model and back into your pocket. Cash conversion cycle = Days inventory outstanding + Days sales outstanding − Days payable outstanding."
— Verne Harnish, Scaling Up, 第12章 The Cash
中文翻译：现金转换周期衡量的是，你花出的一笔钱（房租、水电、工资、库存、营销等）经过你的商业模式，最终回到你口袋需要多长时间。公式：CCC = 库存天数 + 收款天数 − 付款天数。
I — 方法论骨架 (Interpretation)
现金转换周期（CCC）是衡量企业现金效率的核心指标，回答一个根本问题：你的钱出去一趟要多久才能回来？
核心公式：
- CCC = 库存天数（DIO）+ 收款天数（DSO）− 付款天数（DPO）
- 库存天数（DIO）：你买进/生产库存，到卖掉为止，平均压了多少天
- 收款天数（DSO）：你卖出产品/服务，到客户付款为止，平均等了多少天
- 付款天数（DPO）：你收到供应商账单，到你付款为止，平均拖了多少天
解读逻辑：
- CCC越短 → 钱回来越快 → 现金流越健康
- CCC越长 → 钱被压在流程里 → 增长越快越缺钱
- CCC为负数 → 你在用客户的钱做生意（零售行业常见，如亚马逊）
为什么增长反而缺钱？ 增长需要更多库存+更多应收账款，但付款天数相对固定，所以CCC会拉长。如果不管理CCC，增长会让企业死于现金枯竭。
A1 — 书中的应用 (Past Application)
案例 1: 快速增长公司的现金陷阱
- 问题: 一家年收入从5000万增长到2亿的制造企业，利润表很漂亮，但银行账户接近归零
- 方法论的使用: 用CCC分析发现：库存天数从45天增至90天（翻倍），收款天数从30天增至60天，付款天数仅从30天增至35天。CCC从45天暴增至115天
- 结论: 增长消耗现金的速度远超利润增长，现金流实际上是负的
- 结果: 企业被迫紧急融资，创始人股权被大幅稀释
案例 2: 零售行业的负CCC优势
- 问题: 一家连锁零售商与电商竞争，电商增长更快但持续烧钱，零售商却能自我造血
- 方法论的使用: 零售商CCC为负——从供应商处拿货平均60天后付款（DPO=60），但客户买走即付款（DSO≈0）。电商CCC为正——客户先付款但需60天供货（DIO=60），收款还要等15天
- 结论: 零售商的负CCC是一种战略壁垒，让它可以用客户和供应商的钱扩张
- 结果: 零售商在行业衰退期反而能低价收购竞争对手
案例 3: 软件公司订阅模式的CCC改善
- 问题: 一家从一次性Licence转订阅模式的企业，评估现金变化
- 方法论的使用: 原模式：签单即确认收入，但收款可能滞后90天，CCC=90天。订阅模式：客户预付年费（DSO骤降至0或负），库存为0（DIO=0），CCC大幅缩短甚至为负
- 结论: 订阅模式不仅改善收入可预测性，更根本性地改善了CCC
- 结果: 企业实现有机增长，不再依赖外部融资
A2 — 触发场景 (Future Trigger) ★
用户会在什么情境下需要这个 skill？
- 企业快速成长但银行账户持续下降 — 收入增长、毛利可观，账上现金却在减少
- 准备融资或贷款 — 投资人问"你的现金流模型是什么"，需要量化现金效率
- 评估新业务线或产品线 — 想知道某个产品/客户群是吃现金还是产现金
- 供应商谈判或客户合同谈判时 — 决定要不要给客户更长的付款期
- 做季度/年度财务复盘 — 发现利润不错但现金储备没有相应增加
语言信号（用户的话里出现这些就应激活）
- "收入增长了但感觉钱不够用"
- "账上明明有利润怎么还缺钱"
- "这个客户/项目做不做"
- "要不要给这个客户账期"
- "增长太快会不会出问题"
- "我们的回款周期是多久"
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.
- 1mo ago First seen · 163 lines · 110 tokens per session scan A 593c425362d6
Cash Conversion Cycle（现金转换周期） is a skill published in the GitHub repository ace3000chao/book2startup (90 stars, last pushed 5mo ago), licensed MIT. It adds 110 tokens to every session and 2,431 once invoked, about $0.0004 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 2026-08-30.
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