Discover / dutyfinch.cybermaxtools.com

Dutyfinch API by CyberMax

■ Live

US tariff lookup API and MCP server: HTS code lookup and keyword search with official duty rates, Section 301 China list status (lists 1-4, 2024 increases, exclusions with end dates) and the 2026 US-China reduction flag; Pro adds webhook alerts when a watched code changes. Keys work on the REST API and the MCP server. Pay per call: $0.012 USDC per call on Base, no account or API key (x402, PayAI facilitator).

Listed price
$0.012
Live
1 of the last check
Median response
631 ms
Last checked
29 Oct, 15:20 UTC
In our index since
29 Oct 2026

Endpoint

curl -i https://dutyfinch.cybermaxtools.com/x402/api/china-deal
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/dutyfinch.cybermaxtools.com

Recent checks

29 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean the endpoint was not live. “Live” means it answered with HTTP 402 or another detected payment-challenge signal.29 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
29 Oct, 15:20 UTCLive402631ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 29 Oct, 15:20 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Dutyfinch API by CyberMax?

Its listed price is $0.012.

What payment terms does Dutyfinch API by CyberMax advertise?

The listing advertises x402, Base and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is Dutyfinch API by CyberMax listed?

In x402-list.com. Superstables first indexed it on 29 Oct 2026.

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