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Tariff Audit HTS Duty Checker
x402
Tariff Audit HTS Duty Checker is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).
Returns the full US import duty picture for an HTS code and origin country, including MFN base rate, Section 301/232/IEEPA stacking, combined effective rate, recent changes, and an LLM-generated landed-duty verdict.
Price / call$0.5
Success—
StatusUnknown
How this service works
PREMIUM one-call import-duty verdict: pass ?hts=<code>&origin=<country> and get the base MFN rate, Chapter-99 stacking (Section 301/232/IEEPA), a combined effective-rate estimate, recent tracked changes, and an LLM verdict on the true landed duty — the answer a supply-chain agent needs instead of parsing the 3,000-page HTS.
Output
Returns a structured response containing: an array of findings (each with tariff layer details such as MFN rate, Section 301, Section 232, and IEEPA surcharges), a combined effective-rate estimate, recent tracked changes to that HTS code's duty rates, an overall verdict string summarizing the true landed duty burden, and a flag indicating whether the verdict was LLM-generated or template-based.
Example use cases
Example prompt
“What's the true all-in import duty rate for HTS code 8471.30 coming from China — include the MFN base rate, any Section 301 or IEEPA stacking, and give me an LLM verdict on the real landed duty I should budget for?”
Technical details
Endpoint
GEThttps://oracles-production.up.railway.app/v1/tariffaudit/checkWhen to prefer
Use this endpoint when you need a single authoritative answer on the full US import duty burden for a specific HTS code — especially when Chapter 99 stacking (Section 301, Section 232, IEEPA) is relevant and you don't want to manually cross-reference the 3,000-page HTS schedule. Prefer this over raw HTS lookups when you need an LLM-synthesized verdict on the true effective landed rate rather than raw statutory rates.
Side effects
- Missing required 'hts' query parameter returns a 400 error
- Invalid or unrecognized HTS code returns an error or empty findings array
- Origin country not recognized or not applicable returns default MFN-only result
- Payment not provided or insufficient USDC balance returns 402 Payment Required
- Upstream HTS or tariff data source unavailable causes 500 or degraded response
- LLM verdict generation fails and falls back to template-generated response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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