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 gokulb20/crewm8-cfo-skills --skill business-case-modelinggit clone --depth 1 https://github.com/gokulb20/crewm8-cfo-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/gokulb20/crewm8-cfo-skills/business-case-modeling)<a href="https://agentmods.dev/skills/gokulb20/crewm8-cfo-skills/business-case-modeling"><img src="https://agentmods.dev/badge/skills/gokulb20/crewm8-cfo-skills/business-case-modeling/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/gokulb20/crewm8-cfo-skills/business-case-modeling"><img src="https://agentmods.dev/badge/skills/gokulb20/crewm8-cfo-skills/business-case-modeling.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 | $0.00092 | $0.02900 |
| Opus 5 | $0.00046 | $0.01450 |
| Sonnet 5 | $0.00018 | $0.00580 |
| Haiku 4.5 | $0.00009 | $0.00290 |
Grade A, and why
business-case-modeling 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 — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Business Case Modeling
Build rigorous business cases for major investment decisions — new products, market expansions, hiring teams, tool migrations, office moves. Model the full cost, the expected return, and the risks. Goal: every significant dollar of spend has a documented case for why it's worth it.
Purpose
Startups make dozens of investment decisions each year — should we hire a sales team in Europe? Build a new product? Attend this conference series? Without a structured business case, decisions are driven by whoever argues most loudly or has the CEO's ear. This skill brings rigor and consistency to capital allocation by modeling costs, benefits, risks, and alternatives for every major spend decision.
When to Use
- "Should we hire a sales team in Europe?"
- "Build a business case for this new product"
- "What's the ROI of attending this conference series?"
- "Model the payback on this tool migration"
- "Is this partnership worth the investment?"
- "Compare these two growth initiatives"
Inputs Required
- Initiative description — what you're doing, why, and the hypothesis.
- Cost estimates — one-time costs (setup, migration, equipment) and recurring costs (headcount, tools, ongoing spend).
- Revenue or savings projections — what value does this create? New revenue, cost savings, or efficiency gains.
- Timeline — when costs hit and when benefits start.
- Risk factors — what could go wrong, and how likely is it?
Quick Reference
| Metric | Formula | Interpretation |
|---|---|---|
| NPV | Present value of future cash flows minus initial investment | > $0 = invest |
| IRR | Discount rate that makes NPV = 0 | > cost of capital = value-creating |
| Payback period | Time to recover initial investment | < 3 years for startups |
| Break-even | Point where cumulative benefits equal cumulative costs | Lower is safer |
| Discount rate | Risk-adjusted cost of capital | 15% standard for startup projects |
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 · 184 lines · 92 tokens per session scan A 17e4c1232b67
business-case-modeling is a skill published in the GitHub repository gokulb20/crewm8-cfo-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 92 tokens to every session and 2,900 once invoked, about $0.0005 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.
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