# US HTS Chapter & China Section 301 Tariff Brief

> US HTS Chapter & China Section 301 Tariff Brief is a paid API for AI agents from x402-niche-briefs.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns HTSUS chapter overview, Section 301 China additional duty bands, PGA agency flags, and country-of-origin marking checklist for a given chapter and country of origin.

## Facts

- Endpoint: GET https://x402-niche-briefs.fly.dev/v1/hs-tariff-section301-brief?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-hts-chapter-china-section-301-tariff-brief-0fe71adb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ElelPn0LHMANHUU-XjVay

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 us-hts-chapter-china-section-301-tariff-brief-0fe71adb
```

Example prompt: What are the Section 301 China tariffs and PGA agency flags for Chapter 85 electronics imported from China, including the country-of-origin marking checklist?

## When to prefer this

Choose this endpoint when you need a fast, structured reference brief covering HTSUS chapter classification context, Section 301 China duty band applicability, PGA partner government agency flags, and country-of-origin marking requirements — all in a single call. It covers five major chapter groups (electronics, plastics, apparel, furniture, toys) and is optimized for supply chain and e-commerce compliance pre-screening. Prefer alternatives (e.g. CBP CROSS, official USITC HTS search) when you need line-level 10-digit HTS classification, binding rulings, or real-time regulatory updates.

## Known failure modes

- Missing required 'chapter' or 'origin' query parameter returns a validation error
- Unsupported chapter enum value (outside 85_electronics, 39_plastics, 62_apparel, 94_furniture, 95_toys) returns an error
- Unsupported or malformed ISO country code may return no Section 301 data or an error
- Service may return stale duty band data if underlying reference tables have not been updated post-regulatory change
- Response is educational reference only and may not reflect the latest USTR exclusions or emergency tariff actions

## How this service works

US Harmonized Tariff Schedule (HTSUS) chapter overview, Section 301 China List 1-4A additional duty bands, PGA agency flags (FDA, FCC, CPSC, TSCA, Lacey Act), and 19 USC 1304 Country of Origin marking checklist. Pass ?chapter=85_electronics|39_plastics|62_apparel|94_furniture|95_toys&origin=CN. Educational reference only; not legal advice.

## Output

A structured brief including: chapter title, MFN base duty range, Section 301 applicability flag and summary of applicable duty bands (Lists 1–4A), PGA agency flags (e.g. FDA, FCC, CPSC, TSCA, Lacey Act), key classification drivers for that chapter, and a customs compliance checklist for 19 USC 1304 country-of-origin marking. All fields are dated with an as-of timestamp and include an educational disclaimer.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chapter",
      "origin"
     ],
     "properties": {
      "origin": {
       "type": "string",
       "description": "ISO country of origin code (e.g. CN, VN, MX)"
      },
      "chapter": {
       "enum": [
        "85_electronics",
        "39_plastics",
        "62_apparel",
        "94_furniture",
        "95_toys"
       ],
       "type": "string",
       "description": "HTSUS chapter group"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "as_of",
      "chapter",
      "country_of_origin",
      "chapter_title",
      "typical_mfn_base_duty_range",
      "section_301_applicable",
      "section_301_summary",
      "key_classification_drivers",
      "pga_agency_flags",
      "customs_compliance_checklist",
      "disclaimer"
     ],
     "properties": {
      "as_of": {
       "type": "string"
      },
      "chapter": {
       "type": "string"
      },
      "disclaimer": {
       "type": "string"
      },
      "chapter_title": {
       "type": "string"
      },
      "pga_agency_flags": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "country_of_origin": {
       "type": "string"
      },
      "section_301_summary": {
       "type": "string"
      },
      "section_301_applicable": {
       "type": "boolean"
      },
      "key_classification_drivers": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "typical_mfn_base_duty_range": {
       "type": "string"
      },
      "customs_compliance_checklist": {
       "type": "array",
       "items": {
        "type": "string"
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-hts-chapter-china-section-301-tariff-brief-0fe71adb/health.json
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