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 fzfclee/consulting-skills --skill cost-benefit-analysisgit clone --depth 1 https://github.com/fzfclee/consulting-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/fzfclee/consulting-skills/cost-benefit-analysis)<a href="https://agentmods.dev/skills/fzfclee/consulting-skills/cost-benefit-analysis"><img src="https://agentmods.dev/badge/skills/fzfclee/consulting-skills/cost-benefit-analysis/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/fzfclee/consulting-skills/cost-benefit-analysis"><img src="https://agentmods.dev/badge/skills/fzfclee/consulting-skills/cost-benefit-analysis.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 | $0.00052 | $0.00749 |
| Opus 5 | $0.00026 | $0.00375 |
| Sonnet 5 | $0.00010 | $0.00150 |
| Haiku 4.5 | $0.00005 | $0.00075 |
Grade A, and why
cost-benefit-analysis 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.
How it starts
The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cost Benefit Analysis
Use this skill to run Cost Benefit Analysis as a practical consulting method, not as a generic framework explanation.
Method Notes
- Compare against a clear baseline.
- Include timing, confidence, opportunity cost, and downside case.
Required Inputs
Collect or infer these inputs before execution:
- option or investment
- benefit estimates
- cost estimates
- time horizon
- risk assumptions
If an input is missing, do not block automatically. Mark it as missing, state the assumption used, and add a validation action.
When Not To Use
Do not use when material costs and benefits cannot be compared over a common time horizon. Treat non-negotiable legal, safety, or policy constraints as gates rather than averaging them into a financial total.
Adjacent Methods
break-even-analysis: calculate the threshold volume, price, or time.decision-matrix: compare options across non-financial criteria as well as economics.
Step-by-Step Execution
| Step | Required input | How to execute | Output |
|---|---|---|---|
| Define baseline | Current state, proposed option, time horizon. | State what the option is compared against. | Baseline and option definition. |
| Estimate benefits | Revenue, savings, risk reduction, learning, strategic value. | List benefits by type, owner, timing, and confidence. | Benefit estimate table. |
| Estimate costs | Fixed cost, variable cost, time, coordination, opportunity cost. | List costs and timing, including hidden effort. | Cost estimate table. |
| Compare scenarios | Benefits, costs, assumptions. | Calculate or reason through base, upside, and downside cases. | Scenario comparison. |
| Recommend threshold | Scenario comparison and constraints. | Recommend go/no-go/test-first and assumptions to validate. | Cost-benefit recommendation. |
Output Template
### 1. Decision Baseline
Decision:
Baseline / do-nothing case:
Time horizon:
Discount / timing assumption:
### 2. Benefits And Costs
| Item | Type | Amount / range | Timing | Evidence | Confidence |
|---|---|---|---|---|---|
| | | | | | |
### 3. Scenarios
| Scenario | Net value | Key assumption | Downside |
|---|---|---|---|
| | | | |
### 4. Recommendation And Threshold
Recommendation:
Break condition:
Owner:
Validation action:
### Evidence And Next Decision
- Confirmed facts:
- Assumptions:
- Missing evidence:
- Next action, owner, and timing:
- Expected signal and decision threshold:
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 · 88 lines · 52 tokens per session scan A 38e6beda2708
cost-benefit-analysis is a skill published in the GitHub repository fzfclee/consulting-skills (4 stars, last pushed 23d ago), licensed Apache-2.0. It adds 52 tokens to every session and 749 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 2026-08-31.
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