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 agentmods add skills/goshippo/ai/shipping-analysisnpx skills add goshippo/ai --skill shipping-analysisgit clone --depth 1 https://github.com/goshippo/aiWrote 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/goshippo/ai/shipping-analysis)<a href="https://agentmods.dev/skills/goshippo/ai/shipping-analysis"><img src="https://agentmods.dev/badge/skills/goshippo/ai/shipping-analysis.svg" alt="Measured on agentmods" 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 | $0.00024 | $0.00617 |
| Opus 5 | $0.00012 | $0.00309 |
| Sonnet 5 | $0.00005 | $0.00123 |
| Haiku 4.5 | $0.00002 | $0.00062 |
Grade A, and why
shipping-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 6d 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 — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Shipping Analysis and Optimization
Geographic Cost Analysis
- Confirm origin address, destination list (or use representative cities), and parcel details.
- Call
ListCarrierAccountsto see configured carriers. - Call
CreateShipmentper destination to collect rates. Creating shipments is free; onlyCreateTransactioncosts money. - Write results to
analysis/directory (markdown report + CSV). Columns: Route, Destination, Carrier, Service, Cost, Currency, EstimatedDays, Zone.
Package Optimization
- Confirm the route.
- Define dimension profiles to test (or use user-provided ones).
- Check
ListCarrierParcelTemplatesandListUserParcelTemplatesfor flat-rate and saved templates. Seeshippo/references/rate-shopping-guide.mdfor dimensional weight and flat-rate guidance. - Call
CreateShipmentper profile on the same route. - Compare: cheapest rate, carrier options, fastest option per profile. Note where flat-rate templates beat custom dimensions and where dimensional weight causes price jumps. See
shippo/references/carrier-guide.mdfor carrier-specific weight limits and surcharges.
Carrier Comparison
- Call
CreateShipmentfor the route. - Group the
ratesarray byprovider. - Per carrier: cheapest service, fastest service, number of service levels, price range.
Historical Cost Optimization
- Call
ListShipmentsandListTransactionsto get past activity. - Cross-reference: what the user paid vs. what alternatives were available.
- Identify patterns: carrier concentration, service-level mismatch, consistent overpayment.
- For a sample of shipments with tracking numbers, call
GetTrackto check actual vs. estimated delivery times. - If fewer than 5 successful transactions exist (not just shipments -- shipments are rate quotes, transactions represent actual spend), redirect to forward-looking analysis.
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.
- 6d ago First seen · 67 lines · 24 tokens per session scan A 444e97e38d09
shipping-analysis is a skill published in the GitHub repository goshippo/ai (2 stars, last pushed 2d ago), licensed MIT. It adds 24 tokens to every session and 617 once invoked, about $0.0001 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 2026-08-30.
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