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 nexscope-ai/eCommerce-Skills --skill profit-margin-calculator-shopifygit clone --depth 1 https://github.com/nexscope-ai/eCommerce-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/nexscope-ai/ecommerce-skills/profit-margin-calculator-shopify)<a href="https://agentmods.dev/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-shopify"><img src="https://agentmods.dev/badge/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-shopify/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/nexscope-ai/ecommerce-skills/profit-margin-calculator-shopify"><img src="https://agentmods.dev/badge/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-shopify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 15 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00054 | $0.00738 |
| Opus 5 | $0.00027 | $0.00369 |
| Sonnet 5 | $0.00011 | $0.00148 |
| Haiku 4.5 | $0.00005 | $0.00074 |
Grade A, and why
profit-margin-calculator-shopify 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 8d 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 — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Profit Margin Calculator — Shopify/DTC 💰
Calculate product profitability for Shopify and DTC stores — cost breakdowns, profit margins, and CAC/LTV analysis.
Installation
npx skills add nexscope-ai/eCommerce-Skills --skill profit-margin-calculator-shopify -g
Cost Components
| Cost Item | Description | Notes |
|---|---|---|
| Product Cost | FOB purchase price | - |
| Inbound Shipping | To 3PL warehouse | - |
| 3PL Fulfillment | ShipBob/Deliverr etc. | - |
| Payment Processing | 2.9% + $0.30 | Shopify Payments |
| Advertising | 20-40% | Main cost ⚠️ |
| Return Cost | Return processing | - |
| Customer Shipping | If free shipping offered | Optional |
DTC Characteristics
- No platform commission: Only payment processing fees
- High ad spend ratio: 20-40%, main cost driver
- Requires high margins: 60%+ gross margin to support ads
- Focus on LTV/CAC: Recommended >3
Key Metrics
| Metric | Recommended |
|---|---|
| Gross Margin | >60% |
| Net Margin | >20% |
| LTV/CAC | >3 |
| Repeat Rate | Higher = better |
Usage
python3 scripts/calculator.py
python3 scripts/calculator.py '{"selling_price": 49.99, "ad_spend_ratio": 0.20, "product_cost": 12}'
Output Example
💰 **Shopify/DTC Profit Analysis Report**
Selling Price $49.99 100.0%
────────────────────────────────────────
Product Cost -$12.00 24.0%
3PL Fulfillment -$4.50 9.0%
Payment Processing -$1.75 3.5%
Advertising -$10.00 20.0% ⬅️ Main cost
...
────────────────────────────────────────
Net Profit $18.59 37.2%
💡 Max Affordable CAC: $10.00
DTC Golden Ratios
DTC Health Formula:
├── Gross Margin > 60%
├── Ad Spend < 30%
├── Fulfillment < 15%
├── Net Margin > 15%
└── LTV/CAC > 3
vs Amazon
| Item | Amazon | Shopify/DTC |
|---|---|---|
| Platform fee | 8-15% | 0% |
| Payment fee | Included | 2.9% + $0.30 |
| Ad spend | 10-20% | 20-40% |
| Margin need | 40%+ | 60%+ |
| Traffic | Platform | Self-built |
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.
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.
- 8d ago First seen · 97 lines · 54 tokens per session scan A 876018d50a5c
profit-margin-calculator-shopify is a skill published in the GitHub repository nexscope-ai/eCommerce-Skills (914 stars, last pushed 16d ago), licensed MIT. It adds 54 tokens to every session and 738 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 2026-09-03.
Other skills, from other repositories
tariff-calculator-amazon
Universal tariff calculator for Amazon sellers. Calculate import duties, landed costs, and VAT/GST for any trade route. Supports CN→US, CN→EU, US→EU, EU→US, US→CN and custom origin/destination pairs. Includes Section 301 tariffs, trade agreement rates (USMCA, EVFTA), and HS code lookup. No API key required.
amazon-wholesale-sourcing
Wholesale product sourcing — supplier discovery, negotiation, MOQ optimization, margin analysis.
amazon-fba-calculator
Amazon FBA Calculator - Complete fee breakdown and profit analysis.
expense-categorization
Classify expenses by category, department, and tax deductibility from transaction data. Use when the user requests expense categorization or provides relevant inputs for this workflow.
invoice-processing
Extract, validate, and categorize invoice data against purchase orders and GL codes. Use when the user requests invoice processing or provides relevant inputs for this workflow.
budget-planning
Create and manage budgets with variance analysis and departmental allocation. Use when the user requests budget planning or provides relevant inputs for this workflow.