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-amazongit 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-amazon)<a href="https://agentmods.dev/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-amazon"><img src="https://agentmods.dev/badge/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-amazon/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-amazon"><img src="https://agentmods.dev/badge/skills/nexscope-ai/ecommerce-skills/profit-margin-calculator-amazon.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 14 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 | $0.00098 | $0.01864 |
| Opus 5 | $0.00049 | $0.00932 |
| Sonnet 5 | $0.00020 | $0.00373 |
| Haiku 4.5 | $0.00010 | $0.00186 |
Grade A, and why
profit-margin-calculator-amazon 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 — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Profit Margin Calculator — Amazon 💰
Calculate product profitability for Amazon FBA sellers — cost breakdowns, profit margins, break-even analysis, and pricing recommendations. No API key required.
Installation
npx skills add nexscope-ai/eCommerce-Skills --skill profit-margin-calculator-amazon -g
Use Cases
| Scenario | What You'll Get |
|---|---|
| New product evaluation | Profitability forecast before sourcing |
| Existing product diagnosis | Margin analysis with cost breakdown |
| Pricing adjustment | Recommended prices for target margins |
| Batch SKU analysis | Multi-product comparison table |
Usage Examples
Single Product Analysis
Calculate profit for my Amazon product:
- Selling price: $29.99
- Product cost: $6
- Shipping to FBA: $1.50
- FBA fulfillment fee: $5.50
- FBA storage: $0.30/month
- Ad spend: 10% of sales
- Category: Kitchen
Quick Analysis
Is this product profitable?
Price $19.99, cost $5, FBA fee $4.50, shipping $1
Batch Analysis
Analyze these SKUs:
A001, Yoga Mat, $29.99, cost $6, shipping $1.5, FBA $5.5
A002, Resistance Bands, $19.99, cost $3, shipping $0.8, FBA $4
A003, Foam Roller, $24.99, cost $8, shipping $2, FBA $6
Input Parameters
Required
| Parameter | Description | Example |
|---|---|---|
selling_price |
Amazon listing price | $29.99 |
product_cost |
FOB/sourcing cost per unit | $6.00 |
fba_fee |
FBA fulfillment fee | $5.50 |
Recommended
| Parameter | Description | Default |
|---|---|---|
shipping_cost |
Inbound shipping per unit | $0 |
storage_fee |
Monthly FBA storage per unit | $0.30 |
ad_ratio |
PPC spend as % of sales | 10% |
category |
Product category for referral fee | default (15%) |
Optional
| Parameter | Description | Default |
|---|---|---|
return_rate |
Expected return rate | 3% |
other_fees |
Packaging, labels, etc. | $0 |
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 · 244 lines · 98 tokens per session scan A f4386322b573
profit-margin-calculator-amazon is a skill published in the GitHub repository nexscope-ai/eCommerce-Skills (908 stars, last pushed 16d ago), licensed MIT. It adds 98 tokens to every session and 1,864 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 2026-09-03.
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.