# Dutyfinch China Tariff & HTS Code Lookup API

> Dutyfinch China Tariff & HTS Code Lookup API 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 duty rates and China Section 301 tariff information for a given HTS (Harmonized Tariff Schedule) code in a single API call.

## Facts

- Endpoint: GET https://dutyfinch.cybermax-tools.workers.dev/x402/api/china-deal?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-china-tariff-hts-code-lookup-api-b5be8ff0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_49wNCHV2qw44Z1e45Fm5a

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-china-tariff-hts-code-lookup-api-b5be8ff0
```

Example prompt: What's the US import duty rate and Section 301 China tariff for HTS code 8471.30.0100? I want the full combined rate in one shot.

## When to prefer this

Choose this endpoint when you need a fast, single-call lookup of both the standard US duty rate and any Section 301 China tariff surcharge for a specific HTS code, especially for automated cost calculations, trade compliance checks, or product sourcing decisions involving Chinese-origin goods. It is ideal for agents that need structured tariff data without building and maintaining their own HTS/301 database.

## Known failure modes

- Invalid or malformed HTS code returns no match or error response
- HTS code not found in dataset returns empty or null tariff data
- Missing 'code' query parameter may return a default or error response
- Payment failure (x402 protocol) blocks access if USDC not provided
- Rate data may be stale if underlying tariff schedules have been updated by USTR

## 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 US base duty rate and applicable China Section 301 tariff rate for the queried HTS code, enabling calculation of total import duty liability on goods of Chinese origin.

## 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": {
      "code": {
       "type": "string",
       "description": "Optional HTS code to check"
      }
     }
    }
   }
  },
  "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-china-tariff-hts-code-lookup-api-b5be8ff0/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)