USTariffRates

ONLINE USTariffRates answered an MCP connection on 26 Oct 2026 and introduced itself as ustariffrates 1.0.0 (MCP protocol 2025-06-18).

12 tools offered to AI assistants

• search_tariffs · Access: API key, OAuth, or x402 payment when offered. Search current US HTS classifications by product description, code, or prefix. Optionally include origin-specific rate stacks.
• lookup_tariff · Access: API key, OAuth, or x402 payment when offered. Look up a US HTS classification with bounded CBP CROSS ruling evidence and, when origin is supplied, its supported duty layers, warnings, coverage, and provenance.
• calculate_duty · Access: API key, OAuth, or x402 payment when offered. Calculate supported US duty layers and fees for one import line. The response separates total import charges (duty + fees) from total landed cost (entered value + duty + fees) without es
• replay_tariff · Access: API key, OAuth, or x402 payment when offered. Compare a supported historical tariff stack with the current stack while reporting archive coverage explicitly.
• compare_tariff_codes · Access: API key required. Find edition-aware concordance candidates between China, US, EU, GB, and Brazil tariff systems. Supports historical as-of resolution, up to five targets, projections, and cursor pagination. Candidates are non-bindi
• list_tariff_changes · Access: Pro API key or higher required. List customer-scoped tariff changes with optional workflow and classification filters.
• adcvd_cash_deposit · Access: API key required. Current CBP cash-deposit rate for one AD/CVD case, exporter, producer and entry date, from reviewed CBP instruction histories, with the governing CBP message, its effective dates and content hash. Named exporter/pr
• search_rulings · Access: API key required. Search CBP CROSS rulings by an HTS code or prefix the ruling cites (4 to 10 digits) and/or words in the ruling subject, the same operation as GET /v1/rulings. Each ruling lists the HTS codes it cites, the later rul
• get_ruling · Access: API key required. One CBP CROSS ruling by number (for example N338012 or H313152), the same operation as GET /v1/rulings/{ruling_number}: its date, subject, the HTS codes it cites, the later and earlier rulings CBP lists against it,
• screen_import_requirements · Access: API key required. Screen declared product and entry facts against the published import-requirement families (FDA including prior notice, CPSC, EPA, FCC, APHIS Lacey Act plant declaration, soil import permits, and plant-pest import p
• assess_import_entry · Access: API key required. Assess tariff treatments, AD/CVD cases and import requirements for one entry, the same operation as POST /v1/import-assessments, with the same answer field for field. Only the classification (hts_code, chapters 01-
• audit_entry · Access: Team or Enterprise API key required. Audit declared duty against supported rates by entry line, returning discrepancies, coverage boundaries, and provenance.

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

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