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Live US tariff calculator: HTS lookup, full stacked rate (MFN+301+IEEPA+reciprocal). No API key.
About
Live US tariff calculator: HTS lookup, full stacked rate (MFN+301+IEEPA+reciprocal). No API key.
Security Report
Valid MCP server (2 strong, 4 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
3 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 stacked rate (base + Section 301 + IEEPA + reciprocal) + Nov 10 cliff projection. Optional: annual import volume → dollar impact |
Example exchange:
You: What's the tariff on athletic footwear from China, and how does the cliff change my costs if I import $800k/year?
Claude: [uses calculate_tariff with hts_code="6404.11", origin_country="CN", annual_import_value_usd=800000]
HTS 6404110000 — Footwear with outer soles of rubber/plastics...
Rate stack:
Base rate (MFN): +20.00%
Section 301 (List 4A): +7.50%
IEEPA emergency tariff: +145.00%
Total current rate: 172.50%
Nov 10, 2026 cliff: 195.00% (+22.50pp jump)
Dollar impact at $800,000/yr import value:
Current annual duties: $1,380,000
Additional after Nov 10 cliff: $180,000/yr
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
- Free sample pack — 5 HTS codes with full cliff math PDF
- Tariff Survival Kit ($39) — 67 HTS codes pre-computed + sourcing alternatives + Nov 10 action checklist
Affiliate program
Earn 35% on every sale. Sign up here.
Built by Dale Weaver / 0xpi.
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