# Dutyfinch Section 301 China Tariff Lookup

> Dutyfinch Section 301 China Tariff Lookup is a paid API for AI agents from dutyfinch.cybermax-tools.workers.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-10-12).

Returns US HTS duty rates and Section 301 China tariff details for a given product classification code in a single API call.

## Facts

- Endpoint: GET https://dutyfinch.cybermax-tools.workers.dev/x402/api/section301?utm_source=zero.xyz
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dutyfinch-section-301-china-tariff-lookup-a89012eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LyCxxiXTHyG4e0V1x9bei

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dutyfinch-section-301-china-tariff-lookup-a89012eb
```

Example prompt: What is the total US import duty rate for HTS code 8471.30.0100, including any Section 301 China tariffs that apply?

## When to prefer this

Choose this endpoint when you need both the standard MFN duty rate and Section 301 China tariff status for a US HTS code in a single call, especially when building landed-cost calculators, trade compliance tools, or sourcing decision engines that need up-to-date China tariff exposure quickly without sign-up or complex authentication.

## Known failure modes

- Invalid or malformed HTS code returns an error or empty result
- HTS code not found in the tariff database returns null rates
- Rate data may lag behind recent USTR amendments or proclamations
- No query parameters provided returns an error or generic response

## How this service works

Every US duty rate and China tariff, one call. HTS code lookup + Section 301 tariff checker API and MCP Try it free in one click, no sign-up.

## Output

Returns the standard MFN (Most Favored Nation) duty rate, applicable Section 301 China tariff list and rate (if any), the combined effective total tariff rate, and the HTS code description for the queried product classification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dutyfinch-section-301-china-tariff-lookup-a89012eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dutyfinch.cybermax-tools.workers.dev](https://www.zero.xyz/host/dutyfinch.cybermax-tools.workers.dev/llms.txt)