# Dutyfinch Section 301 Tariff Checker

> Dutyfinch Section 301 Tariff Checker is a paid API for AI agents from dutyfinch.cybermaxtools.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-10-10).

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

## Facts

- Endpoint: GET https://dutyfinch.cybermaxtools.com/x402/api/section301?utm_source=zero.xyz
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dutyfinch-section-301-tariff-checker-b0898e94
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_feoT81FHDQja0CEhVIwCG

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-tariff-checker-b0898e94
```

Example prompt: What's the US duty rate and Section 301 China tariff for HTS code 8471.30.0100? I need to know the total import cost before placing a purchase order.

## When to prefer this

Choose this endpoint when you need both the standard US MFN duty rate AND the Section 301 China-specific tariff in a single call, avoiding the need to query multiple trade databases separately. Ideal for agents automating landed cost calculations, compliance checks, or pricing models for goods imported from China. Preferred over manual CBP lookups or multi-step trade data APIs when speed, simplicity, and combined duty information matter.

## Known failure modes

- Invalid or malformed HTS code returns an error response
- HTS code not found in database returns empty or null rates
- Missing required query parameters results in 400-level error
- Stale tariff data if Section 301 lists have been recently updated
- Network timeout or service unavailability returns 5xx error

## 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 object containing the HTS code's base US MFN duty rate and the applicable Section 301 China tariff rate (if any), allowing calculation of total import duty burden for goods sourced from China.

## 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-tariff-checker-b0898e94/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)