# Dutyfinch US Duty Rate & China Tariff Lookup

> Dutyfinch US Duty Rate & China Tariff Lookup is a paid API for AI agents from dutyfinch.cybermaxtools.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-10-11).

Returns US import duty rates and Section 301 China tariff data for a given HTS code in a single API call

## Facts

- Endpoint: GET https://dutyfinch.cybermaxtools.com/x402/api/watch?utm_source=zero.xyz
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dutyfinch-us-duty-rate-china-tariff-lookup-bc3f384e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UibTGxCgvkf_u7mbVYrhu

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-us-duty-rate-china-tariff-lookup-bc3f384e
```

Example prompt: What's the full 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 a single, fast lookup of both the base US MFN duty rate and Section 301 China tariff surcharge for a specific HTS code. It is ideal for e-commerce pricing, landed cost calculation, trade compliance checks, and supplier sourcing decisions involving Chinese goods. Prefer this over manual tariff schedule searches when you need machine-readable duty data with China-specific surcharge detail in one call.

## Known failure modes

- Invalid or malformed HTS code returns an error or empty result
- HTS code not found in the tariff schedule returns null or 404
- Missing required query parameters returns a 400 bad request
- Rate limit or payment failure (x402) returns 402 Payment Required
- Outdated tariff data if rates have changed and index is stale

## 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

A JSON response containing the MFN (most-favored-nation) base duty rate, applicable Section 301 China tariff surcharge rate, and combined total duty rate for the queried HTS code, enabling accurate landed cost calculations for US imports.

## 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-us-duty-rate-china-tariff-lookup-bc3f384e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dutyfinch.cybermaxtools.com](https://www.zero.xyz/host/dutyfinch.cybermaxtools.com/llms.txt)