A
licenseNot graded
qualityB
maintenanceProvides access to US import tariff rates via the USITC Harmonized Tariff Schedule, enabling natural language queries for tariff data.
22 npm
MIT
Gateway Lines Tariff
Server Details
US import duty, HTS classification and tariff changes from the Gateway Lines tariff engine.
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- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-06-18
- URL
TDQS
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Available Tools
3 toolsclassify_htsFind HTS classification codesRead-onlyIdempotentInspect
Find the US Harmonized Tariff Schedule classification for a product. Returns candidate HTS codes with their official descriptions and base duty rates. Use when the user wants the code itself rather than a cost.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | Product description, e.g. "cotton t-shirts" or "lithium ion batteries". |
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| note | No | |
| query | No | |
| source | No | |
| gateway | No | |
| results | No | Candidates ranked by text match, not a classification ruling. |
| warning | No | |
| disclaimer | No | |
| guest_lookups_remaining | No |
landed_costCalculate landed cost and import dutyRead-onlyIdempotentInspect
Calculate US import duty and landed cost estimates. Give hts_code when you know it and this returns the calculated base duty and trade actions (Section 301, Section 232, Section 338, AD/CVD and others), estimated duty, fees and import cost. When estimate_status is partial, AD/CVD is undetermined and the amounts are provisional; convey that the estimate is incomplete. Give product instead and it returns candidate HTS codes WITHOUT pricing, because the classification decides the duty and guessing it produces confidently wrong numbers: confirm the right code with the user, then call again with hts_code. The candidate step is not charged.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| product | No | Plain description, e.g. "outdoor metal furniture". Returns candidate codes to confirm, does not price. Provide this OR hts_code. | |
| hts_code | No | Exact HTS rate line, 8 or 10 digits, e.g. "9403.20.00.50". Takes precedence over product. 4 and 6 digit headings cannot be priced. | |
| country_code | Yes | ISO 2-letter country of ORIGIN (where the goods were made), e.g. "CN", "CA", "VN". | |
| shipment_mode | No | Optional: "ocean" (default) or "air". Affects government fees only. | |
| declared_value | Yes | Customs value of the shipment in USD. |
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| note | No | |
| source | No | |
| country | No | Country of origin, as resolved. |
| gateway | No | Guest tier only. |
| message | No | |
| hts_code | No | The HTS line the duty was calculated on. |
| warnings | No | |
| candidates | No | Candidate HTS lines to confirm, present only when needs_classification is true. |
| disclaimer | No | Planning estimate, not a customs ruling. Pass this on to the user. |
| description | No | Official description of that line. |
| service_fees | No | Filing and handling charges such as ISF. Not government fees; CBP charges nothing to receive an Importer Security Filing. |
| adcvd_supplier | No | Supplier deposit evidence when supplied by the calculation: reviewed entry date, matched legal identities, rules, effective windows, official sources, and cases actually included. A matched case does not establish complete all-orders coverage. |
| declared_value | No | Customs value used, in USD. |
| duty_breakdown | No | Every trade action considered, keyed by authority (base_duty, section_301, section_232, section_338_canada and the rest). Each carries rate, applies, and often a reason and legal reference. An action with applies false and upcoming true is scheduled but not yet owed. |
| policy_notices | No | Source-backed scope and supplier notices affecting use of this estimate. |
| total_duty_usd | No | Calculated duty estimate in USD. When estimate_status.status is partial, this is provisional and is not the complete payable duty. |
| estimate_status | No | A partial status means AD/CVD is undetermined and this estimate is incomplete. Pass its message to the user; a zero calculated AD/CVD component does not establish zero liability. |
| government_fees | No | MPF and HMF, the fees CBP actually collects. |
| total_duty_rate_pct | No | Calculated duty estimate as a percentage of declared value. Read estimate_status before describing this as a complete estimate. |
| needs_classification | No | True when a product description was given instead of a code. Nothing was priced and nothing was charged; show the candidates and ask the user to confirm. |
| total_import_cost_usd | No | Calculated duties plus government and service fees, excluding merchandise and freight. Provisional when estimate_status is partial. |
| guest_lookups_remaining | No | Guest tier only. |
policy_changes_sinceList US trade policy changesRead-onlyIdempotentInspect
List US trade policy changes Gateway has published since a given date: new tariff actions, rate changes, effective dates and expirations. Use to answer "what changed recently" or "what is coming".
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Max entries to return, default 20, max 50. | |
| since | No | ISO date, e.g. "2026-07-01". Filters on when Gateway PUBLISHED the change. Defaults to 30 days ago. |
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| count | No | |
| since | No | The date filtered on, ISO. |
| source | No | |
| changes | No | |
| gateway | No | |
| disclaimer | No | |
| guest_lookups_remaining | No |
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
3 tool updates
- First observed
classify_hts - First observed
landed_cost - First observed
policy_changes_since
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