# Dutyfinch HTS Code Duty Rate Lookup

> Dutyfinch HTS Code Duty Rate 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 import 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/hts?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-hts-code-duty-rate-lookup-217e8a91
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uIGzJJ_GDJSDqHCnBffZl

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-hts-code-duty-rate-lookup-217e8a91
```

Example prompt: What's the US duty rate for HTS code 8516.60.40 — including any Section 301 China tariffs that apply?

## When to prefer this

Choose Dutyfinch when you need a single, fast API call that combines both the standard US MFN duty rate AND the China Section 301 tariff surcharge for any HTS code — eliminating the need to query multiple government databases (USITC, USTR) separately. Ideal for landed cost calculators, trade compliance workflows, sourcing decision tools, and AI agents that need structured tariff data programmatically. Particularly valuable when dealing with Chinese-origin goods where Section 301 rates can add 7.5%–25%+ on top of base duties.

## 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
- Ambiguous short codes (4 or 6 digit) may return parent-level aggregate data rather than specific rates
- Payment failure via x402 protocol results in 402 response before data is returned
- Rate limiting or quota exhaustion on the underlying tariff database

## 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 comprehensive US duty rate data for the queried HTS code, including the general (MFN) duty rate, any applicable Section 301 additional tariffs on Chinese-origin goods, and relevant classification details — all in a single JSON response.

## 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": "HTS code: 4, 6, 8 or 10 digits, dots optional (e.g. 8516.60.40, 9503000013)"
      }
     }
    }
   }
  },
  "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-hts-code-duty-rate-lookup-217e8a91/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)