# Gateway Lines Tariff (remote · mcp.gatewaylines.com)

US import duty, HTS classification and tariff changes from the Gateway Lines tariff engine.

- Trust score: 82/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-06

## Components

- remote · `mcp.gatewaylines.com`: 82/100 (this document), [markdown](https://verifymcp.io/servers/com-gatewaylines-tariff/mcp.md), [page](https://verifymcp.io/servers/com-gatewaylines-tariff/mcp)

## Channel facts

- Endpoint: `https://mcp.gatewaylines.com`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-06.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1020 tokens (~340/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 77/100
  - Stability observed for 23 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Gateway Lines Tariff MCP server?

Gateway Lines Tariff is a hosted endpoint at https://mcp.gatewaylines.com/, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-gatewaylines-tariff 'https://mcp.gatewaylines.com/'
```

### Cursor

```json
{
  "mcpServers": {
    "com-gatewaylines-tariff": {
      "url": "https://mcp.gatewaylines.com/"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-gatewaylines-tariff": {
      "type": "http",
      "url": "https://mcp.gatewaylines.com/"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-gatewaylines-tariff]
url = "https://mcp.gatewaylines.com/"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-gatewaylines-tariff": {
      "type": "remote",
      "url": "https://mcp.gatewaylines.com/",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-gatewaylines-tariff --url 'https://mcp.gatewaylines.com/' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-gatewaylines-tariff:
    url: "https://mcp.gatewaylines.com/"
```

### Netclaw

```json
{
  "McpServers": {
    "com-gatewaylines-tariff": {
      "Transport": "http",
      "Url": "https://mcp.gatewaylines.com/"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-gatewaylines-tariff -t streamable-http -u 'https://mcp.gatewaylines.com/'
```

### Other

```json
{
  "mcpServers": {
    "com-gatewaylines-tariff": {
      "type": "http",
      "url": "https://mcp.gatewaylines.com/"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-06 (score 82, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-11-05 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 81, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “classify_hts” rewrote its description, which is the text the model reads
- [security] Tool “landed_cost” rewrote its description, which is the text the model reads
- [security] Tool “policy_changes_since” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 261 → 340
- [functional] Server version: 1.0.1 → 1.1.0
- [cosmetic] “landed_cost” added an optional parameter “quantity”
- [cosmetic] “landed_cost” added an optional parameter “quantity_unit”
- [cosmetic] “policy_changes_since” reworded the description of “limit”

### 2026-11-02 (score 81, +1)

- [cosmetic] “landed_cost” reworded the description of “shipment_mode”

### 2026-10-31 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (3)

### `landed_cost` (~517 tokens)

Calculate landed cost and import duty

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, part of the duty is undetermined (AD/CVD deposits, or a per-unit duty that needs a quantity) and the amounts are provisional; convey that the estimate is incomplete, and read duty_total_bound for whether the total is a minimum. 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, and neither is the same lookup repeated within ten minutes.

Input parameters:

- `country_code` (string, required): ISO 2-letter country of ORIGIN (where the goods were made), e.g. "CN", "CA", "VN".
- `declared_value` (number, required): Customs value of the shipment in USD.
- `entry_date` (string): Optional: the date the goods will be entered, YYYY-MM-DD (US Eastern time), today or later. Default today.
- `hts_code` (string): 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.
- `product` (string): Plain description, e.g. "outdoor metal furniture". Returns candidate codes to confirm, does not price. Provide this OR hts_code.
- `quantity` (number): Optional: the quantity, for lines whose duty is charged per unit (per kg, per dozen, per pair and so on). Without it that part of the duty is not priced and the total is a minimum. Send with quantity…
- `quantity_unit` (string): Optional, with quantity: kg, g, lb, each, dozen, pair, liter, m, m2, m3, cm, gross, head or barrel. Must be the unit the duty is charged in (duty_breakdown.base_duty.unit); convert first if it differ…
- `shipment_mode` (string): Optional: "ocean" (default), "air" or "truck" (a land border crossing from Canada or Mexico). Affects government fees only: only ocean pays the harbor maintenance fee and files an ISF.

Output parameters:

- `adcvd_supplier` (object|null): 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…
- `candidates` (array): Candidate HTS lines to confirm, present only when needs_classification is true.
- `country` (object): Country of origin, as resolved.
- `declared_value` (number): Customs value used, in USD.
- `description` (string|null): Official description of that line.
- `disclaimer` (string): Planning estimate, not a customs ruling. Pass this on to the user.
- `duty_breakdown` (object|null): 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…
- `duty_total_bound` (string): exact: every part of the duty is priced (AD/CVD notices may still make it provisional). at_least: a per-unit part is unpriced, so the total is a minimum; give quantity and quantity_unit to price it.…
- `duty_total_note` (string|null): Present when duty_total_bound is not exact. Pass it to the user.
- `estimate_status` (object|null): A partial status means part of the duty is undetermined (AD/CVD deposits, or a duty that needs a quantity) and this estimate is incomplete. Pass its message to the user; a zero calculated AD/CVD comp…
- `fta` (object|null): A free trade agreement rate the goods may qualify for. Not applied to the total; it requires a claim and proof of origin.
- `gateway` (string): Guest tier only.
- `government_fees` (object|null): MPF and HMF, the fees CBP actually collects.
- `guest_allowance` (string): Guest tier only: the allowance in words.
- `guest_lookups_remaining` (number): Guest tier only: priced duty lookups left in the rolling 7 days.
- `hts_code` (string): The HTS line the duty was calculated on.
- `message` (string)
- `needs_classification` (boolean): 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.
- `note` (string)
- `policy_notices` (array): Source-backed scope and supplier notices affecting use of this estimate.
- `quantity` (number|null): Quantity used to price a per-unit duty, when one was given.
- `quantity_unit` (string|null): Unit of that quantity, or the unit the per-unit duty is charged in.
- `service_fees` (object|null): Filing and handling charges such as ISF. Not government fees; CBP charges nothing to receive an Importer Security Filing.
- `source` (string)
- `total_duty_rate_pct` (number|null): Calculated duty estimate as a percentage of declared value. Read estimate_status before describing this as a complete estimate.
- `total_duty_usd` (number|null): Calculated duty estimate in USD. When estimate_status.status is partial, this is provisional and is not the complete payable duty; duty_total_bound says whether it is a minimum.
- `total_import_cost_usd` (number|null): Calculated duties plus government and service fees, excluding merchandise and freight. Provisional when estimate_status is partial.
- `usmca_auto_232_note` (string|null): Canada and Mexico vehicles and parts: how a USMCA claim changes the Section 232 auto duty.
- `usmca_claim` (object|null): Canada and Mexico: the duty with a USMCA claim, which needs the agreement's rules of origin to be met. The main figure is priced WITHOUT a claim; show this beside it, never in place of it.
- `warnings` (array)

### `classify_hts` (~86 tokens)

Find HTS classification codes

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. Not charged: it does not use a duty lookup.

Input parameters:

- `query` (string, required): Product description, e.g. "cotton t-shirts" or "lithium ion batteries".

Output parameters:

- `disclaimer` (string)
- `gateway` (string)
- `guest_allowance` (string)
- `guest_lookups_remaining` (number)
- `note` (string)
- `query` (string)
- `results` (array): Candidates ranked by text match, not a classification ruling.
- `source` (string)
- `warning` (string)

### `policy_changes_since` (~140 tokens)

List US trade policy changes

List US trade policy changes Gateway has published since a given date: new tariff actions, rate changes, effective dates and expirations, each with its official source. Also returns, under upcoming, earlier entries for changes announced or proposed but not yet in force. Use to answer "what changed recently" or "what is coming". Not charged: it does not use a duty lookup.

Input parameters:

- `limit` (number): Max entries to return, default 10, max 50.
- `since` (string): ISO date, e.g. "2026-07-01". Filters on when Gateway PUBLISHED the change. Defaults to 30 days ago.

Output parameters:

- `changes` (array)
- `count` (number)
- `disclaimer` (string)
- `gateway` (string)
- `guest_allowance` (string)
- `guest_lookups_remaining` (number)
- `since` (string): The date filtered on, ISO.
- `source` (string)
- `upcoming` (array): Entries published BEFORE `since` that are still pending or monitoring, newest first, so "what is coming" is answerable whatever date is asked about.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-gatewaylines-tariff/mcp#diagnostics

## Score history

- 2026-11-06: 82
- 2026-11-05: 82
- 2026-11-04: 81
- 2026-11-03: 81
- 2026-11-02: 81
- 2026-11-01: 80
- 2026-10-31: 80
- 2026-10-30: 79
- 2026-10-29: 79
- 2026-10-28: 79
- 2026-10-27: 78
- 2026-10-26: 78
- 2026-10-25: 77
- 2026-10-24: 77
- 2026-10-23: 76
- 2026-10-22: 76
- 2026-10-21: 75
- 2026-10-20: 75
- 2026-10-19: 75
- 2026-10-18: 74
- 2026-10-17: 74
- 2026-10-16: 73
- 2026-10-15: 73
- 2026-10-14: 72

## Common questions

### What is the Gateway Lines Tariff MCP server?

Gateway Lines Tariff is an MCP server listed in the public MCP registry as com.gatewaylines/tariff. US import duty, HTS classification and tariff changes from the Gateway Lines tariff engine. This page covers its hosted endpoint (https://mcp.gatewaylines.com).

### Is the Gateway Lines Tariff MCP server safe to use?

Gateway Lines Tariff scores 82 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Gateway Lines Tariff MCP server expose?

Gateway Lines Tariff exposes 3 tools: landed_cost, classify_hts, policy_changes_since. Their descriptions and schemas cost roughly 743 tokens of context every time the server is loaded.

### Does the Gateway Lines Tariff MCP server require authentication?

No. We connected to Gateway Lines Tariff without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Gateway Lines Tariff MCP server still maintained?

Gateway Lines Tariff is still listed as active in the MCP registry. We last reached this channel on 6 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the Gateway Lines Tariff MCP server?

VerifyMCP ran 13 checks on Gateway Lines Tariff, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://mcp.gatewaylines.com/
- Website: https://tariff.gatewaylines.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-gatewaylines-tariff/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-gatewaylines-tariff/mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/com-gatewaylines-tariff/mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-gatewaylines-tariff/mcp