Cash Conversion Cycle(现金转换周期)

Cash Conversion Cycle(现金转换周期) is a skill for Claude Code, Codex from ace3000chao/book2startup. It costs 110 tokens per session (2,431 once invoked), scanned A, original, MIT.

A business cash-flow measure showing how long money stays tied up between paying business costs and receiving customer payments.

In plain words
What is it for?
It helps examine inventory time, customer collection time, and supplier payment time when assessing growth or cash pressure.
Why use it?
A company can be profitable on paper yet run short of cash when inventory sells slowly or customers pay late.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/ace3000chao/book2startup/cash-conversion-cycle
Any agent
npx skills add ace3000chao/book2startup --skill cash-conversion-cycle
Clone the repo
git clone --depth 1 https://github.com/ace3000chao/book2startup

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for Cash Conversion Cycle(现金转换周期)

README.md
[![agentmods](https://agentmods.dev/badge/skills/ace3000chao/book2startup/cash-conversion-cycle.svg)](https://agentmods.dev/skills/ace3000chao/book2startup/cash-conversion-cycle)
Your own site
<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="Measured on agentmods" height="20"></a>
Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,431 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00110 $0.02431
Opus 5 $0.00055 $0.01215
Sonnet 5 $0.00022 $0.00486
Haiku 4.5 $0.00011 $0.00243

Measured 5d ago against content hash 593c425362d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

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 5d 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.

ScalingUp-skills/cash-conversion-cycle/SKILL.md · 163 lines

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?

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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"

Read the full file on GitHub · 163 lines

Files

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.

Changes

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.

  1. 5d ago First seen · 163 lines · 110 tokens per session scan A 593c425362d6

Subscribe to this mod's changes

Cash Conversion Cycle(现金转换周期) is a skill published in the GitHub repository ace3000chao/book2startup (76 stars, last pushed 4mo ago), licensed MIT. It adds 110 tokens to every session and 2,431 once invoked, about $0.0006 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.