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/Amazon-Skills --skill tariff-calculator-amazongit clone --depth 1 https://github.com/nexscope-ai/Amazon-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/amazon-skills/tariff-calculator-amazon)<a href="https://agentmods.dev/skills/nexscope-ai/amazon-skills/tariff-calculator-amazon"><img src="https://agentmods.dev/badge/skills/nexscope-ai/amazon-skills/tariff-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/amazon-skills/tariff-calculator-amazon"><img src="https://agentmods.dev/badge/skills/nexscope-ai/amazon-skills/tariff-calculator-amazon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- 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 16 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 | $0.00084 | $0.01294 |
| Opus 5.5 | $0.00034 | $0.00518 |
| Sonnet 5.5 | $0.00017 | $0.00259 |
| Haiku 4.5 | $0.00008 | $0.00129 |
Grade A, and why
tariff-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 1mo 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 — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tariff Calculator — Amazon 💰
Universal tariff and landed cost calculator for international Amazon sellers.
Installation
npx skills add nexscope-ai/eCommerce-Skills --skill tariff-calculator-amazon -g
Features
- Universal Trade Routes — Any origin to any destination
- Tariff Rate Lookup — HS code → duty rate
- Section 301 Tariffs — US additional duties on China imports
- VAT/GST Calculation — EU, UK, CA, AU, CN rates
- Landed Cost — Complete cost breakdown
- HS Code Matcher — Product description → HS code suggestions
- Trade Agreements — USMCA, EVFTA, RCEP preferential rates
Supported Trade Routes
| Route | Key Tariffs | VAT/GST |
|---|---|---|
| 🇨🇳 → 🇺🇸 China → USA | Section 301 (7.5-25%) | N/A |
| 🇨🇳 → 🇪🇺 China → EU | Standard duties | 19-22% |
| 🇨🇳 → 🇬🇧 China → UK | Standard duties | 20% |
| 🇺🇸 → 🇪🇺 USA → EU | Standard duties | 19-22% |
| 🇪🇺 → 🇺🇸 EU → USA | Standard duties | N/A |
| 🇺🇸 → 🇨🇳 USA → China | Retaliatory tariffs | 13% VAT |
| 🇨🇳 → 🇨🇦 China → Canada | Standard duties | 5% GST |
| 🇨🇳 → 🇦🇺 China → Australia | Standard duties | 10% GST |
| Custom | User-defined | User-defined |
Section 301 Tariffs (China → USA)
| HS Chapter | Products | Additional Rate |
|---|---|---|
| 84xx | Computers, machinery | 25% |
| 85xx | Electronics (some) | 0-25% |
| 94xx | Furniture, lighting | 25% |
| 95xx | Toys | 25% |
| 61/62 | Apparel | 7.5% |
| 64xx | Footwear | 7.5% |
| 42xx | Bags, accessories | 7.5% |
Landed Cost Formula
Landed Cost =
FOB Value
+ International Freight
+ Insurance
+ Import Duty
+ VAT/GST (if applicable)
+ Customs Clearance
+ Port Fees
+ Inland Freight
Usage
Basic Calculation
python3 scripts/calculator.py
With Parameters
python3 scripts/calculator.py '{
"hs_code": "8518300000",
"origin_country": "CN",
"destination_country": "US",
"fob_value": 5000.00,
"quantity": 500,
"freight_cost": 200.00
}'
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.
- 1mo ago First seen · 175 lines · 84 tokens per session scan A 00419c880ae6
tariff-calculator-amazon is a skill published in the GitHub repository nexscope-ai/Amazon-Skills (810 stars, last pushed 2mo ago), licensed MIT. It adds 84 tokens to every session and 1,294 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-30.
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