innovation-accounting

innovation-accounting is a skill for Claude Code, Codex from ace3000chao/book2startup. It costs 55 tokens per session (1,346 once invoked), scanned A, original, MIT.

A framework for measuring whether an early business is making real progress, based on ideas from the book The Lean Startup. It uses a starting baseline and tracks how groups of users behave over time instead of relying only on total counts.

In plain words
What is it for?
Use it to choose progress measures after launching a minimum viable product, compare groups of new users, and track activation, retention, and paid conversion. It can also help prepare evidence of progress for investors.
Why use it?
Total users or other large headline numbers can rise while the product is not improving. This approach helps separate meaningful changes in user behaviour from numbers that only look encouraging.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to choose progress measures after launching a minimum viable product, compare groups of new users, and track activation, retention, and paid conversion. It can also help prepare evidence of progress for investors.

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Install with agentmods
npx agentmods add skills/ace3000chao/book2startup/003-innovation-accounting
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.

Any agent
npx skills add ace3000chao/book2startup --skill 003-innovation-accounting
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 innovation-accounting

README.md
[![agentmods](https://agentmods.dev/badge/skills/ace3000chao/book2startup/003-innovation-accounting/github.svg)](https://agentmods.dev/skills/ace3000chao/book2startup/003-innovation-accounting)
Your own site
<a href="https://agentmods.dev/skills/ace3000chao/book2startup/003-innovation-accounting"><img src="https://agentmods.dev/badge/skills/ace3000chao/book2startup/003-innovation-accounting/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.

agentmods 80×15 button for innovation-accounting

Your own site · 80×15
<a href="https://agentmods.dev/skills/ace3000chao/book2startup/003-innovation-accounting"><img src="https://agentmods.dev/badge/skills/ace3000chao/book2startup/003-innovation-accounting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,346 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00055 $0.01346
Opus 5 $0.00028 $0.00673
Sonnet 5 $0.00011 $0.00269
Haiku 4.5 $0.00006 $0.00135

Measured 11d ago against content hash df36ddb8808c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

innovation-accounting 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.

精益创业skills/skills/003-innovation-accounting/SKILL.md · 92 lines

What it actually says

Skill: 创新核算三步骤

Metadata

  • ID: leanstartup-003
  • 类型: framework
  • 来源: 《精益创业》第七章
  • 验证状态: ✅ 三重验证通过(V1: 3章详细论证, V2: 高频决策需求, V3: 反直觉)

R — Reading(原文引用)

"创新核算是为了提高创业成果,并让创新者们负起相应责任的一套新的核算制度。它关注那些乏味的细枝末节:如衡量进度、如何确定阶段性目标、以及如何优先分配工作。"

"如果我们被这些'总顾客数量'等等的虚荣指标误导,那么创新核算就无从谈起。"

I — Interpretation(方法论骨架)

传统商业用财务数据(收入、利润、成本)衡量进展,但早期创业根本没有这些数据——所以你需要一个全新的衡量体系。

创新核算的核心逻辑:

  1. 先有基准线:用MVP发布后的现状作为起点,不是和"完美未来"比,而是和"从零开始"比
  2. 追踪同期群:不是看"总用户数",而是看"这一批新用户中,有多少人表现出了期望行为"
  3. 用因果指标而非相关指标:知道为什么数字在变,而非只看数字涨跌

A1 — Past Application(书中案例)

IMVU的虚荣指标陷阱:他们每月增长,收入稳定,团队感觉良好。但同期群数据揭示:每个新用户群产生的收益从未提高。增长引擎早已停滞,但总数指标掩盖了真相。直到增长彻底停摆才被迫转型,损失了大量时间。

Grockit的指标改革:从"总用户数"改为"同期群激活率和留存率"后,团队才发现过去6个月做的大量"优化"实际上对顾客行为毫无影响。

A2 — Future Trigger(何时调用)

当你听到以下问题时,就应该调用这个Skill:

  • "我们怎么衡量创业进展?感觉每天都在忙,但不知道是否在进步"
  • "投资人说要看数据,我们该给他们看什么?"
  • "我们的用户数在涨,但收入也在涨,到底是好事还是坏事?"
  • "产品上线了,下周一开会,怎么衡量这周的工作是否有成效?"
  • "团队对进展有争议,如何客观裁决?"

E — Execution(可执行步骤)

步骤1:建立基准线

用MVP发布后第一周的数据作为基准线:

  • 活跃用户数(不是注册用户,而是真正使用的)
  • 激活率(注册用户中,有多少人完成核心行为)
  • 留存率(一周后还回来的比例)
  • 付费转化率(产生收入的比例)

记录下来,设为基准。

步骤2:追踪同期群,而非总数

每个周期(周/月):把新获得的用户作为一组,追踪这组人在后续周期的行为。

Week 1 新增100人 → Week 2:这100人中有30人回来(30%留存)
Week 2 新增120人 → Week 3:这120人中有35人回来(29%留存)

如果留存率稳定或提升,说明产品在进步。如果下降,说明引擎出了问题。

步骤3:区分可执行指标 vs 虚荣指标

虚荣指标(好看但不能指导行动):

  • 总用户数、总页面浏览量、总收入
  • "我们上个月新增了10000用户"

可执行指标(能告诉你该做什么):

  • 同期群激活率、同期群留存率
  • "Week 2的这批用户,只有15%完成了注册流程,需要优化注册体验"

问自己:这个数字能告诉我下一周该做什么吗?

步骤4:每月设定认知阶段性目标

不要只说"我们要增长",而是:

  • "本月目标:把新用户的激活率从15%提升到25%"
  • "验证假设:顾客不愿意激活是因为注册流程太复杂(3个步骤 → 目标1个步骤)"
  • "判断标准:激活率提升到25%即视为假设得到验证"

B — Boundary(何时不适用)

不适用场景 原因
成熟业务(有稳定收入和用户) 这时候用传统财务指标更合适
平台型业务(网络效应需要大量用户基础) 早期平台需要先积累用户,再看转化
纯品牌/营销驱动业务 这类业务的衡量逻辑不同

作者盲点提醒:创新核算需要团队对真相有承受能力。很多团队设置了核算框架,但当数据不好时,选择忽略或重新定义指标。真正的创新核算要求"对结果负责"的文化。

关联Skills

  • 同期群分析 — 创新核算的核心工具
  • 三个"可"衡量指标 — 判断指标是否有效的标准
  • 转型决策树 — 当创新核算显示持续停滞时,启动转型评估
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. 11d ago First seen · 92 lines · 55 tokens per session scan A df36ddb8808c

Subscribe to this mod's changes

innovation-accounting is a skill published in the GitHub repository ace3000chao/book2startup (80 stars, last pushed 4mo ago), licensed MIT. It adds 55 tokens to every session and 1,346 once invoked, about $0.0003 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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