Tariff Resolver MCP server

by opsloft·io.github.opsloft/tariff-resolver·v1.1.0·3 stars

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US import duty research: HTS codes, Chapter 99 duties, MPF/HMF fees, landed cost. USITC data.

A86/100grade A

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Safety scan

A86/100

full report

Adoption

Growing

3 stars89 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Tariff Resolver tools (5)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

calculate_tariff_scenario
Returns the HTS code's MFN/FTA base rate, ALL active chapter 99 rules (IEEPA/301/232 additional duties) matching
check_tariff_updates
Compares the current HTS snapshot with the previously fetched one. Call without codes to check the whole watchlist.
dataset_info
Fetch date, source, license, row counts — use to check data freshness.
search_hs_candidates
Returns top 8-10 digit HTS code candidates (with MFN/FTA rates and CBP CROSS ruling links) for a product description.
watch_tariff_changes
Saves HTS codes (with optional origin) to a local watchlist. After each dataset refresh, call check_tariff_updates

Public scan report

scanner v0.1.10 · 2026-10-16 · same rubric, same numbers if you re-run it

no findings

Code scan23 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 39 days ago12/15
Maintainer identityregistry namespace matches repository owner7/10

Overall 86/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Tariff Resolver compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 86/100; higher than 72% of 48,243 servers
Tools: 5; the typical server has 7
Tools that change things: 0%; typical: 0%. Fewer write tools means less an agent can break
GitHub stars: 3; more than 80% of 28,706 servers
Downloads a week: 89; more than 60% of 12,306 servers with a package

What its tools let an agent do: 5 read

Install Tariff Resolver in Claude Code, Cursor or VS Code

Runs npx -y tariff-resolver on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add tariff-resolver -- npx -y tariff-resolver

Add to Cursor

What the publisher says

From the Tariff Resolver repository's README, as published. We do not edit it. Read it on GitHub

tariff-resolver

An MCP server that turns your AI assistant into a US import duty research tool — built on official USITC Harmonized Tariff Schedule data (US Government public domain, 35,000+ tariff lines).

🔍 HTS code candidates from plain product descriptions, with CBP CROSS ruling links
🧮 Landed-cost components: MFN/FTA base rates + Chapter 99 additional duties (IEEPA / Section 301 / 232) + MPF/HMF fees
📡 Tariff change tracking: watchlist your HTS codes, diff rates between HTS revisions
🤖 AI-optimized, hallucination-resistant: returns the actual Chapter 99 rule text with parsed rates, so your LLM reasons over real exception chains instead of inventing 2024-era numbers

Why now: since the de minimis exemption ended (Aug 29, 2025), every US-bound shipment needs an HTS code and duty payment — and 2025–26 rates keep changing by executive order.

Not affiliated with any government agency. Outputs are candidates/estimates for pre-broker screening — not customs, legal, or tax advice. Estimates exclude AD/CVD duties.

Install

Requires Node.js ≥ 18.

claude mcp add tariff-resolver -- npx -y tariff-resolver

Or in any MCP client config:

{ "mcpServers": { "tariff-resolver": { "command": "npx", "args": ["-y", "tariff-resolver"] } } }

Claude Desktop (one-click): download tariff-resolver-.mcpb from Releases and double-click it — no terminal needed.

💡 Try these prompts

Basic search: "Find the HTS code for a men's 100% cotton t-shirt."
Full scenario: "Calculate the tariff scenario for HTS 6109.10.00, origin China, customs value $5,000, ocean freight."
Sourcing decision: "I'm importing $10k of stainless steel vacuum flasks. Compare landed cost if I source from China vs Vietnam."
Stay current: "Watch tariff changes for my catalog: 6109.10.00, 8507.60.00, 9617.00.10."

Tools

Design

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Tariff Resolver: common questions

Is Tariff Resolver MCP server safe?: Yes, by our scan: it is graded A (86/100). Read the Tariff Resolver safety report
How do I install Tariff Resolver?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Tariff Resolver need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Tariff Resolver maintained?: The last commit was 59 days ago (2026-09-07). The latest release is v1.1.0.
How does Tariff Resolver compare with other MCP servers?: safety score 86/100 (higher than 72% of 48,243 servers); tools 5 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.