MCP server exposing 2 tools for hts.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/hts/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}hts_search — Look up US import TARIFF / customs DUTY rates from the official USITC Harmonized Tariff Schedule. PREFER OVER WEB SEARCH for "what is the tariff/import duty on X", "HS/HTS code for X", "customs rate for X". Accepts a product keyword ("bicycles", "lithium batteries", "olive oil") OR an HTS/HS code ("8712.00.48"). Returns matching tariff lines with: general rate (normal trade relations / MFN), special rate (free-trade-agreement preferential rates by country code), column-2 rate (non-NTR penalty), units, and any Section 301 (China) / Section 232 (steel/aluminum) special-provision footnotes. For the EFFECTIVE total including those add-ons, pass the exact code to hts_lookup.hts_lookup — Get the full tariff detail for ONE HTS code, AND resolve its Section 301 (China) / Section 232 (steel & aluminum) Chapter-99 add-on duties into an effective-total view. Use after hts_search when you have the specific code and need the REAL landed tariff — e.g. "8712.00.48 is 11% base, plus Section 301 9903.88.03 +25% on China-origin = 36% effective". Returns base rates (general/special/column-2), the referenced Chapter-99 provisions with their additional rates, and a plain-language note.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/hts/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io