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 R2h1/my-book-skills --skill v24git clone --depth 1 https://github.com/R2h1/my-book-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/r2h1/my-book-skills/v24)<a href="https://agentmods.dev/skills/r2h1/my-book-skills/v24"><img src="https://agentmods.dev/badge/skills/r2h1/my-book-skills/v24/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/r2h1/my-book-skills/v24"><img src="https://agentmods.dev/badge/skills/r2h1/my-book-skills/v24.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 | $0.00047 | $0.01329 |
| Opus 5 | $0.00023 | $0.00665 |
| Sonnet 5 | $0.00009 | $0.00266 |
| Haiku 4.5 | $0.00005 | $0.00133 |
Grade A, and why
v24-利润变量控制 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 11d 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
利润变量控制:操纵杠杆驱动增长
R — 原文 (Reading)
快车道财富公式中的变量是你可以操纵的——销售数量、利润率、行业乘数。每一个变量的小幅改善,通过乘法效应,都能带来巨大的利润增长。
— MJ·德马科, 第18章
I — 方法论骨架 (Interpretation)
利润变量控制是快车道数学公式的操作指南。核心洞察:利润不是一个单一数字,而是多个变量的乘积,每个变量都是你可以操纵的杠杆。
-
利润公式:净利润 = 销售数量 × 利润率
-
三个操纵杆:
- 转化率:多少访客变成了客户?改善转化率不需要增加流量成本,是ROI最高的杠杆。
- 流量:多少人接触到你的产品?增加流量是增长的基础,但要注意获客成本。
- 利润率:每单赚多少钱?提高定价或降低成本都可以提升利润率。
-
乘法效应:三个操纵杆同时改善10%,总效果是1.1×1.1×1.1=1.33倍(33%增长)。如果每个改善20%,1.2×1.2×1.2=1.73倍(73%增长)。
-
行业乘数:这是第二层杠杆——净利润 × 行业乘数 = 资产价值。不同行业的乘数不同(SaaS 6-10x,传统服务2-4x)。选择高乘数行业本身就是一种杠杆。
A1 — 书中的应用 (Past Application)
德马科的优化案例:他的网站每天1.2万访问量,转化率12%,每单利润4美元。通过同时操作三个杠杆——提高转化率到15%、增加流量到2万、提升利润到4.5美元——收入从每天5760美元增长到1.35万美元。
关键洞察:他不是只做一件事,而是同时优化多个变量。单一变量的大幅改善很难,但多个变量的小幅改善叠加,效果远超预期。
A2 — 触发场景 (Future Trigger)
触发场景:
- 你发现业务收入停滞不前时
- 你想提升利润但不确定从哪里入手时
- 你在设计定价策略时
- 你在评估不同增长策略的ROI时
语言信号:
- "收入上不去了"
- "流量很大但转化率低"
- "利润太薄了"
- "不知道应该降价还是涨价"
与相邻技能的区分:
- vs v03(可控的无限平衡):v03解释快车道公式的原理,v24提供具体的操作方法和杠杆点。
- vs v15(执行vs点子):v15解决"要不要行动"的问题,v24解决"行动后如何优化"的问题。
E — 可执行步骤 (Execution)
- 拆解你的利润公式:写出你的业务公式——净利润 = 流量 × 转化率 × 客单价 × 利润率。明确每个变量的当前值。
- 识别最大杠杆点:哪个变量改善空间最大?通常转化率是最容易优化的(优化落地页、简化流程、增加信任信号)。
- 设定30天目标:选择一个杠杆点,设定具体可量化的30天改善目标(如"转化率从3%提升到4%")。
- 执行A/B测试:每次只改变一个变量,测量变化前后的差异,确保改善是真实的而非随机波动。
- 计算资产价值:用行业乘数估算你的业务估值——净利润 × 行业乘数。这个数字可以帮你理解"每多赚1元净利润,资产价值增加多少"。
- 建立持续优化机制:每周花30分钟回顾三个杠杆点的变化,形成一个持续优化的循环。
B — 边界 (Boundary)
不适用场景:
- 业务极早期(还未验证需求前):先验证需求(v07),再谈优化。
- 没有数据追踪能力的微小业务:先建立基本的追踪系统。
失败模式:
- 优化致死:在错误的方向上优化——如果产品本身没有需求,优化转化率毫无意义。
- 过度关注短期利润:为了提升短期利润而牺牲长期品牌价值(如过度提价)。
- 变量混淆:同时改变多个变量,无法确定哪个变化导致了结果。
作者盲点:
- 框架假设你已经有足够的数据来追踪每个变量——微小企业可能没有这个能力。
- 行业乘数不是你能主动控制的,更多取决于市场环境和行业周期。
审计信息
验证通过: V1 ✓ / V2 ✓ / V3 ✓
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.
- 11d ago First seen · 83 lines · 47 tokens per session scan A c7974027d4d5
v24-利润变量控制 is a skill published in the GitHub repository R2h1/my-book-skills (2 stars, last pushed 26d ago), licensed MIT. It adds 47 tokens to every session and 1,329 once invoked, about $0.0002 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 2026-08-31.
Other skills, from other repositories
bookkeeping-cn
A Chinese-language bookkeeping assistant that turns transaction records into organized income, spending, budgets, and reconciliation reports. Reconciliation means comparing records to find differences.
wps-salary
A Chinese payroll calculator and salary-slip generator. It calculates employee deductions for social insurance, housing funds, and personal income tax, then creates Excel salary slips.
wps-budget
A spreadsheet generator for planning and tracking budgets, with categories, subtotals, totals, and comparison calculations. It supports department, project, event, household, and marketing budgets.
wps-financial-report
A financial statement generator for the three standard company reports: the balance sheet, income statement, and cash flow statement.
dangjr
Dan G Jr — Venture capital theory & early-stage investing. Triggers: venturecapital, earlystageinvesting, fundeconomics, vcdiversification, dealflow, startupcapitalefficiency.
rory-odriscoll
Rory O'Driscoll — Partner at Scale Venture Partners; recurring 20VC co-host. Triggers: enterpriseSaaS, growthinvesting, publicmarkets, SaaSeconomics.