Connect Dutyfinch MCP to your AI client
US tariff API + MCP: HTS duty rates, Section 301 lists. Keys $19/mo; 50 free calls a day.
Endpoint: https://dutyfinch.cybermaxtools.com/mcp · Free: 50 free calls a day · Paid: Keys $19/mo
| Client | Where the config goes |
|---|---|
| Cursor | ~/.cursor/mcp.json (every project) |
| VS Code (GitHub Copilot) | .vscode/mcp.json in your workspace (VS Code format, top-level "servers") |
| Claude Code | claude mcp add --transport http dutyfinch 'https://dutyfinch.cybermaxtools.com/mcp?via=use-with-claude-code' |
| Claude Desktop and claude.ai | no file: remote servers are added as custom connectors in Claude's settings |
| Windsurf (Devin Desktop) | ~/.config/devin/mcp_config.json (macOS and Linux) |
| Cline | cline_mcp_settings.json: in the IDE, click the MCP Servers icon › Configure › Configure MCP Servers |
| OpenAI Codex CLI | ~/.codex/config.toml (or .codex/config.toml in a trusted project) |
| Gemini CLI | gemini mcp add --transport http dutyfinch 'https://dutyfinch.cybermaxtools.com/mcp?via=use-with-gemini-cli' |
Tools
Endpoint checked 2026-10-09: https://dutyfinch.cybermaxtools.com/mcp answered an MCP initialize (protocol 2025-06-18) and tools/list with 4 tools, all marked read-only. No key was used and no tool was called.
| Tool | What it does | Required inputs |
|---|---|---|
lookup_hts_code | US tariff lookup for one HTS code (4, 6, 8 or 10 digits): description, general/special/column 2 duty rates, Section 301 China list status with the additional rate, exclusions, and the 2026 US–China reduction flag. | code |
search_hts | Find US HTS codes from product words (e.g. "air fryer", "wooden toys") or a code prefix. Returns codes with description, general rate and Section 301 China summary. | q |
section301_lists | All Section 301 China tariff headings (lists 1, 2, 3, 4A, 4B, 2024 increases, exclusions) with rates, dates and code counts. | none |
china_deal_status | Status of the 2026 US–China tariff reduction list (pending / notice_published / published) and, with code, whether that HTS code is on it. | none |