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US import tariff estimates: HTS lookup and stacked rate (MFN + Section 301 + 232). No API key.
About
US import tariff estimates: HTS lookup and stacked rate (MFN + Section 301 + 232). No API key.
Security Report
Valid MCP server (2 strong, 3 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
5 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-daleweaver1981-tariffmonitor-mcp": {
"args": [
"-y",
"tariffmonitor-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
tariffmonitor-mcp
MCP server for the Tariff Exposure Monitor — a live US import tariff calculator covering 19,856 HTS codes.
Give Claude (or any MCP-compatible AI) the ability to look up real stacked tariff rates and project the November 10, 2026 cliff impact on any product.
What it does
Two tools:
| Tool | What it does |
|---|---|
lookup_hts_code | Search 19,856 HTS codes by description or numeric prefix |
calculate_tariff | Returns an estimated stacked rate (MFN base + Section 301 + Section 232) and flags the Nov 10, 2026 Section 301 exclusion expiry. Optional: annual import volume → dollar impact |
Example exchange — a real capture from the live API on 2026-09-11, not a mock-up:
You: What's the tariff on athletic footwear from China, and what does it cost me at $800k/year?
Claude: [calls lookup_hts_code query="athletic footwear", then calculate_tariff
hts_code="6404110000", origin_country="CN", annual_import_value_usd=800000]
Note: 6404110000 is not in the schedule. This rate is for heading 640411, resolved to 6404112030.
HTS 6404112030 - For men
Origin: CN
Rate stack:
MFN base rate: +0.00%
Section 301 (China trade enforcement): +7.50%
Total current rate: 7.50%
No cliff change projected for this code/country combination.
Dollar impact at $800,000/yr import value:
Current annual duties: $60,000
Rates change, and a rate is per HTS code and origin country - treat the numbers above as the shape of the answer, not as a quote for your shipment. The tool never invents a rate: if the upstream is unreachable or the code is not in the schedule, it says so instead of estimating.
Install (Claude Desktop)
Add to your claude_desktop_config.json:
{
"mcpServers": {
"tariffmonitor": {
"command": "npx",
"args": ["-y", "tariffmonitor-mcp"]
}
}
}
Restart Claude Desktop. The lookup_hts_code and calculate_tariff tools appear automatically.
Install (Cursor / other MCP clients)
{
"mcp": {
"servers": {
"tariffmonitor": {
"command": "npx",
"args": ["-y", "tariffmonitor-mcp"]
}
}
}
}
No API key required
The tool calls the free public API at adcreator-ai.com. No signup, no rate limits for reasonable use.
Related
- Free tariff calculator — browser version
- Official US Harmonized Tariff Schedule — the authoritative rates
Built by Dale Weaver / 0xpi.
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