shun-shi-er-wei

shun-shi-er-wei is a skill for Claude Code, Codex from ace3000chao/book2startup. It costs 177 tokens per session (2,698 once invoked), scanned A, original, MIT.

A decision-making method from the Chinese classic I Ching for reading changing conditions and acting in line with them. It separates judging the situation, using favorable conditions, and stopping plans that no longer fit.

In plain words
What is it for?
Use it when choosing a startup direction, considering a change of market, deciding whether to transform a business, or judging whether it is too early or too late to act.
Why use it?
It helps avoid wasting effort by pushing in a direction that no longer matches the market or other outside conditions. It also distinguishes thoughtful adaptation from impulsive change.

Skill for Claude CodeCodex

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

Good fit Use it when choosing a startup direction, considering a change of market, deciding whether to transform a business, or judging whether it is too early or too late to act.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ace3000chao/book2startup/shun-shi-er-wei
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 shun-shi-er-wei
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 shun-shi-er-wei

README.md
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Your own site
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Per session 177 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,698 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 $0.00177 $0.02698
Opus 5 $0.00088 $0.01349
Sonnet 5 $0.00035 $0.00540
Haiku 4.5 $0.00018 $0.00270

Measured 11d ago against content hash e54ade6cdc6b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

shun-shi-er-wei 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.

易经skills/shun-shi-er-wei/SKILL.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

顺势而为法

R — 原文 (Reading)

"豫,刚应而志行,顺以动,豫。豫顺以动,故天地如之,而况建侯行师乎?" "随,元亨利贞,无咎。"

— 《易经》豫卦·随卦


I — 方法论骨架 (Interpretation)

豫卦的核心是"顺以动"——顺应时势而行动。豫为豫乐、预备之意,但豫的本质不是盲目的乐观,而是在看清方向后的从容准备。随卦则进一步说明:真正的"随"不是跟随他人,而是跟随时势。

两个卦象共同构成顺势方法论的完整框架:辨势→借势→不逆势。辨势是认知层面,需要判断当前环境处于什么阶段;借势是行动层面,在认定的方向上全力投入;不逆势是底线思维,当外部环境发生根本性变化时,停止原计划而非硬撑。

应用于创业决策:最大的浪费不是执行效率低,而是方向对了但逆势而行。创业者需要持续校准自己的行动方向与外部环境的匹配度——不是在真空中规划,而是在具体的时空中做出判断。"顺势"不是投机,而是对时势的尊重;"逆势"不是勇敢,是对自己和团队的不负责任。


A1 — 书中的应用 (Past Application)

案例1: 文王顺势灭商——辨势的最高典范

  • 问题: 周族在文王之前已经历古公亶父、季历两代积累,但面对商朝仍是弱小的属国。直接对抗无异于以卵击石。
  • 方法论的使用: 文王首先"辨势"——看清商的民心已失、纣王已失道,周族得道多助;然后"借势"——以德行凝聚周边小国,形成同盟,化敌对为归附;最后"不逆势"——他本人始终以臣子身份行事,绝不提前称王,留给儿子武王完成最后一击。文王在世时"顺势而不越势"。
  • 结论: 顺势的核心不是被动等待,而是主动判断时势,在最有利的时间点做最有利的事。提前行动是逆势,拖延不动也是逆势。
  • 结果: 武王继位后牧野之战灭商,建立周朝。文王的辨势之功,是灭商最关键的前提。

案例2: 古公亶父迁岐——放弃也是顺势

  • 问题: 古公亶父作为周族首领,面对北方游牧民族薰育的入侵,继续战斗会耗尽部落青壮年,撤退则看似懦弱。
  • 方法论的使用: 古公亶父选择放弃原有领地,带领部落迁徙到岐山脚下。"辨势"告诉他:薰育的威胁是结构性的,无法通过一次战争解决;留在原地会不断消耗,周族会慢性死亡。"借势"的方式是换赛道——换一个不受薰育威胁的区域重新开始。
  • 结论: 顺势有时表现为进攻,有时表现为战略性撤退。判断"势"在哪里,不以面子和情绪为转移。
  • 结果: 周族在岐山得以休养生息,最终发展为足以对抗商朝的强大势力。如果没有这次迁徙,就没有后来的周朝。

A2 — 触发场景 (Future Trigger) ★

用户会在什么情境下需要这个 skill?

  1. 创业方向选择阶段:在多个方向中做抉择时,需要判断哪个方向更"顺势"——即更符合当前环境的主要趋势,而不是单纯比较哪个看起来更光鲜。
  2. 外部环境发生重大变化:政策调整、行业周期变化、关键技术突破、竞争格局突变——需要重新评估原有战略是否仍然顺势。
  3. 赛道切换或转型节点:考虑从当前业务进入新赛道时,需要判断是"顺势进入"还是"逆势跨界",以及进入的时机是否合适。
  4. "等还是动"的焦虑时刻:面对不确定的未来,不知道该积极布局还是该蛰伏等待,需要一个框架来做出判断而非凭情绪。

语言信号

  • "这个方向行不行"
  • "要不要转型"
  • "现在入局晚不晚"
  • "这个趋势怎么看"
  • "是等还是动"
  • "我该押注吗"
  • "怎么判断这是不是一个机会"

与相邻 skill 的区分

  • 与**守成戒贪法(f10)**的区别: f10是守成期的自我约束,关注"如何节制";本skill关注"何时动、何时等",不限于守成或进取阶段
  • 与**否卦(ce09 否之匪人)**的区别: ce09是反例(不通的势),本skill是正面方法论;ce09说明"逆势必凶",本skill说明"顺势如何行动"

E — 可执行步骤 (Execution)

  1. 辨势:画出"三圈图"

    • 完成标准: 明确列出(1)你所在行业/赛道的主要趋势是什么?(2)你的核心能力与这个趋势的匹配度如何?(3)你的资源(资金、人脉、时间)是否足以支撑在这个趋势中竞争?
    • 判停条件: 若三圈交集为空(即趋势不匹配、能力不匹配、资源不支持),说明当前不适合进入,应重新寻找方向或等待时机
  2. 借势:确定"杠杆点"

    • 完成标准: 在认定的顺势方向上,找到1-2个"最小可行杠杆"——即投入最小但撬动效应最大的行动;明确这些杠杆点后,集中资源押注,不分散
    • 判停条件: 若找不到明显的杠杆点,说明对"势"的理解还不够深入,返回第1步重新辨势

Read the full file on GitHub · 130 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. 11d ago First seen · 130 lines · 177 tokens per session scan A e54ade6cdc6b

Subscribe to this mod's changes

shun-shi-er-wei is a skill published in the GitHub repository ace3000chao/book2startup (80 stars, last pushed 4mo ago), licensed MIT. It adds 177 tokens to every session and 2,698 once invoked, about $0.0009 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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