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 simbajigege/book2skills --skill clash-cultures-investment-speculation-boglegit clone --depth 1 https://github.com/simbajigege/book2skillsWrote 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/simbajigege/book2skills/clash-cultures-investment-speculation-bogle)<a href="https://agentmods.dev/skills/simbajigege/book2skills/clash-cultures-investment-speculation-bogle"><img src="https://agentmods.dev/badge/skills/simbajigege/book2skills/clash-cultures-investment-speculation-bogle/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/simbajigege/book2skills/clash-cultures-investment-speculation-bogle"><img src="https://agentmods.dev/badge/skills/simbajigege/book2skills/clash-cultures-investment-speculation-bogle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00036 | $0.02073 |
| Opus 5 | $0.00018 | $0.01037 |
| Sonnet 5 | $0.00007 | $0.00415 |
| Haiku 4.5 | $0.00004 | $0.00207 |
Grade A, and why
clash-cultures-investment-speculation-bogle 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 12d 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 — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.
The Clash of the Cultures — Stewardship Investing Skill
Knowledge source: The Clash of the Cultures by John C. Bogle.
Overview
Use this skill to distinguish long-term investing from short-term speculation and to critique financial products, market behavior, or policy proposals through Bogle's stewardship lens. It supports investors, educators, analysts, and policy-minded users evaluating whether activity creates real value or extracts value through turnover, fees, leverage, and agency conflicts.
When to Use This Skill
Use this skill when the user asks:
- "Is this investing or speculation?"
- "How would Bogle view high-frequency trading, hedge funds, or derivatives?"
- "Are financial intermediaries adding value here?"
- "Why do costs matter so much?"
- "What reforms would reduce speculation?"
Core Principle
Long-term investing is ownership in productive businesses; speculation is betting on price expectations. When the financial system shifts from stewardship to trading, costs, agency conflicts, and casino-like incentives subtract value from investors and society.
Workflow Inventory
| Workflow | User question pattern | Inputs | Steps | Output | Independent trigger? | Distinct references? | Triage score | Should be subskill? | Reason |
|---|---|---|---|---|---|---|---|---|---|
| Investing vs speculation classification | "Is this activity investing?" | Holding period, thesis, turnover, cost, leverage | Test real-market ownership vs expectations-market betting | Classification and corrective rule | Yes | Yes | 3 | No | Central workflow. |
| Cost drag analysis | "Do fees matter?" | Fee rate, turnover, time horizon, tax/cost data | Apply compounding cost drain and zero-sum alpha logic | Cost impact warning | Yes | Yes | 3 | No | Same investing/speculation verdict. |
| Wall Street incentive critique | "Does this product add value?" | Product, intermediary incentives, costs, complexity | Identify agency conflicts and value extraction | Incentive diagnosis | Yes | Yes | 3 | No | Uses same stewardship lens. |
| Reform assessment | "Would this policy help?" | Policy proposal, target behavior | Test whether it reduces speculation/costs/conflicts | Reform pros/cons | Yes | Yes | 3 | No | Same social-value frame. |
What ships with it
4 files 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.
- 12d ago First seen · 205 lines · 36 tokens per session scan A 9c3a101674f8
clash-cultures-investment-speculation-bogle is a skill published in the GitHub repository simbajigege/book2skills (163 stars, last pushed 17d ago), licensed MIT. It adds 36 tokens to every session and 2,073 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 2026-08-30.
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