# Dutyfinch US HTS Code & China Tariff Search

> Dutyfinch US HTS Code & China Tariff Search 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 2026-10-11).

Looks up US HTS codes with base duty rates and applicable Section 301 China tariffs by product description or HTS code prefix

## Facts

- Endpoint: GET https://dutyfinch.cybermax-tools.workers.dev/x402/api/search?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-hts-code-china-tariff-search-1b7ac3e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JVQl7y3KFa2S0bo5J1lY2

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-hts-code-china-tariff-search-1b7ac3e5
```

Example prompt: What's the US import duty rate and any China Section 301 tariff for 'stainless steel electric kettle' — show me up to 5 matching HTS codes and their rates.

## When to prefer this

Choose this endpoint when you need fast, single-call access to both the baseline US HTS duty rate and the China Section 301 tariff surcharge for a product, especially when searching by product keyword rather than an exact HTS code. Prefer this over manual USITC lookups or separate tariff databases when building import cost calculators, trade compliance checks, or procurement tools that need real-time tariff data without sign-up friction.

## Known failure modes

- No matching HTS codes found for vague or misspelled product descriptions
- Partial or ambiguous code prefix returns too many or irrelevant results
- Section 301 tariff data may lag behind recent executive actions or exclusions
- Limit parameter out of range (must be 1-25) returns validation error
- Missing required query parameter 'q' may return an error or empty result

## 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 a list of HTS code matches (up to 25) each containing the product description, HTS code, general US duty rate, and any applicable Section 301 China tariff rate, allowing agents to assess total landed cost of imported goods.

## 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": {
      "q": {
       "type": "string",
       "description": "Product words (e.g. \"stainless steel kettle\") or a code prefix (e.g. 8516.71)"
      },
      "limit": {
       "type": "integer",
       "default": 10,
       "maximum": 25,
       "minimum": 1,
       "description": "Results, 1–25 (default 10)"
      }
     }
    }
   }
  },
  "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-hts-code-china-tariff-search-1b7ac3e5/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)