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 charlieviettq/awesome-agent-skill --skill biz-unit-economicsgit clone --depth 1 https://github.com/charlieviettq/awesome-agent-skillWrote 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/charlieviettq/awesome-agent-skill/biz-unit-economics)<a href="https://agentmods.dev/skills/charlieviettq/awesome-agent-skill/biz-unit-economics"><img src="https://agentmods.dev/badge/skills/charlieviettq/awesome-agent-skill/biz-unit-economics/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/charlieviettq/awesome-agent-skill/biz-unit-economics"><img src="https://agentmods.dev/badge/skills/charlieviettq/awesome-agent-skill/biz-unit-economics.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 | $0.00079 | $0.01253 |
| Opus 5 | $0.00039 | $0.00626 |
| Sonnet 5 | $0.00016 | $0.00251 |
| Haiku 4.5 | $0.00008 | $0.00125 |
Grade A, and why
"biz-unit-economics" 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 9d 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.
This is a copy
86% identical to biz-unit-economics — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Unit Economics
Overview
Unit economics measures profitability at the single-unit level — per customer, per transaction, or per product. If unit economics are negative, scaling makes losses worse, not better. Positive unit economics are the prerequisite for sustainable growth.
Framework
IRON LAW: If Unit Economics Are Negative, Growth = Faster Death
Scaling a business with negative unit economics means losing more money
faster. "We'll make it up in volume" only works if variable costs per unit
decrease with scale (economies of scale). If they don't, more volume = more losses.
Prove unit economics are positive BEFORE investing in growth.
Key Metrics by Business Model
Subscription/SaaS:
| Metric | Formula |
|---|---|
| CAC | Total acquisition spend / New customers |
| LTV | ARPU × Gross Margin × (1/Churn Rate) |
| LTV:CAC | Must be > 3:1 |
| Payback Period | CAC / (Monthly ARPU × Gross Margin) |
| Net Revenue Retention | (Starting MRR + Expansion - Contraction - Churn) / Starting MRR |
E-commerce/Marketplace:
| Metric | Formula |
|---|---|
| AOV | Total Revenue / Number of Orders |
| Contribution Margin per Order | AOV - COGS - Shipping - Payment fees - Returns |
| Repeat Rate | Returning customers / Total customers |
| Fully-loaded CAC | Total marketing / New customers |
On-demand/Delivery:
| Metric | Formula |
|---|---|
| Revenue per Trip | Order value × Take rate |
| Cost per Trip | Driver pay + Support + Insurance + Incentives |
| Contribution per Trip | Revenue - Cost per Trip |
| Orders per Day per Driver | Utilization metric |
Analysis Steps
- Define the unit: What is one "unit"? (customer, order, trip, seat)
- Calculate revenue per unit: What does each unit generate?
- Calculate variable cost per unit: What does each unit cost?
- Calculate contribution margin: Revenue - Variable cost
- Layer fixed costs: At what volume do you cover fixed costs? (→ break-even)
- Assess scalability: Do unit economics improve or degrade at 10x volume?
What ships with it
2 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.
- 9d ago First seen · 120 lines · 79 tokens per session scan A 11c13b0c1f80
"biz-unit-economics" is a skill published in the GitHub repository charlieviettq/awesome-agent-skill (26 stars, last pushed 1mo ago), licensed MIT. It adds 79 tokens to every session and 1,253 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to biz-unit-economics, differing in 8 lines, and is treated as a copy.
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