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Dutyfinch Tariff Lookup

by cybermax.cybermax-tools.workers.dev · remote · no sign-in to list tools · v1.0.1 · published by dev.workers.cybermax-tools.cybermax

US import duty and HTS codes from the official USITC schedule, plus Section 301 China status. Free.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http dutyfinch-chatgpt https://gpt-dutyfinch.cybermaxtools.com/mcp?via=mcp-registry

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnlookup_hts

    The server marks "lookup_hts" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "lookup_hts" says "lookup": a word for reading.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 1Claude Code: ask
  • lookup_htsUse this when the user gives an HTS / HS tariff code (4, 6, 8 or 10 digits, e.g.1 finding

    Why it is in this group

    • The name "lookup_hts" says "lookup": a word for reading.
    • The input takes a statement or command to run (input.code), which can change anything it can reach.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "lookup_hts" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "lookup_hts" says "lookup": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Use this when the user gives an HTS / HS tariff code (4, 6, 8 or 10 digits, e.g. 8516.60.40 or 9503000071) and wants the US duty rate, Section 301 China tariff status, units or the official description.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
Only reads 1Claude Code: allow
  • search_htsUse this when the user describes a product and wants its US HTS code, tariff classification or import duty ("HTS code for…", "tariff on … from China", "import duty for …").No findings

    Why it is in this group

    • The name "search_hts" says "search": a word for reading.
    Description, as the server wrote it
    Use this when the user describes a product and wants its US HTS code, tariff classification or import duty ("HTS code for…", "tariff on … from China", "import duty for …"). Searches the official US Harmonized Tariff Schedule by keywords and returns the best matching codes with rates and Section 301 China status. Then use lookup_hts for full detail on one code.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http dutyfinch-chatgpt https://gpt-dutyfinch.cybermaxtools.com/mcp?via=mcp-registry

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__dutyfinch-chatgpt__search_hts"
    ],
    "ask": [
      "mcp__dutyfinch-chatgpt__lookup_hts"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as dutyfinch-chatgpt. Review it before you use it.