TariffsChart

com.tariffschartPublished by tariffschart.comOfficial publisherv1.0.0Updated Oct 24, 2026

US HTS duty lookup and import-duty review with official sources and explicit unresolved layers.

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

TariffsChart is a remote MCP server that lets an assistant look up US HTS base duty rates and review an import duty stack against official sources.

What you can do
Look up a fresh simple MFN general duty field from USITC HTS data, with source revision and date, excluding other layers. Review an import duty stack showing official sources, known subtotals, missing inputs and unresolved applicability. Keep unknowns unresolved and treat user-supplied states as scenario assumptions rather than final duty.
When to use it
Useful when you need a quick US HTS base rate or a structured review of which duty layers apply to an import, and want missing or unresolved pieces shown explicitly rather than guessed.
Requirements
A remote streamable HTTP endpoint at mcp.tariffschart.com; no packages, environment variables or headers are declared. For duty review, the real USD customs value and entry date are needed.
Before you install
The base lookup is explicitly not the final import tariff, and complex or stale rates may be unavailable. Do not infer a final duty from a known subtotal; unknowns stay unresolved and user review states are only scenario assumptions.

Installation

In SourceWeft

  1. Open TariffsChart in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.tariffschart%2Ftariffschart/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "tariffschart": {
      "type": "http",
      "url": "https://mcp.tariffschart.com/mcp"
    }
  }
}

Tools

2

lookup_hts_base_rate

Look up a US HTS base duty rate

Look up a fresh simple MFN general duty field from TariffsChart’s USITC HTS data. Includes source revision, date and excluded layers. Base-only: never treat this as the final import tariff. Complex or stale rates may be unavailable; use review_import_duty for quantity-based duties.

ParametershsCoderequired

review_import_duty

Review duty layers for imports into the US

Review an import duty stack with official sources, known subtotals, missing inputs and unresolved applicability. Provide the real USD customs value and entry date. Unknowns stay unresolved; user review states are scenario assumptions. Do not infer a final duty from a known subtotal.

ParameterspairsareaM2dozenshsCoderequiredoriginrequiredquantityvolumeM3entryDaterequiredloadedDateadcvdStatusnetWeightKgquotaStatus+9 more

Version history

1
  1. v1.0.0LatestOct 13, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.