Roundhouse

x402-niche-briefs.fly.dev

US CBP Section 321 ($800 de minimis) eligibility & 2025/2026 China/Section 301 exclusion evaluator. Pass ?shipment_value_usd=180&origin=CN&subject_to_301=true. Returns Section 321 eligibility, recommended CBP Entry Type (Type 86 vs Type 11 Informal vs Type 01 Formal), anti-structuring rules, and bond/MPF checklist. Educational reference only; not legal advice.

TradingLiveeip155:8453Exactvia cdp
https://x402-niche-briefs.fly.dev/v1/de-minimis-321-eligibility
Section-321De-minimisCbpCustomsCross-border
Settlements · 30d
350↑ 17300%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$3.88
Verified settled volume
355 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-26 00:46Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x847f…b03A9. The signed payment is good for 5 minutes.

Paid to
0x847f…b03A9
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "origin": "CN",
          "subject_to_301": "true",
          "shipment_value_usd": "180"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "as_of": "2026-10-25",
          "inputs": {
            "origin": "CN",
            "subject_to_301": true,
            "shipment_value_usd": 180
          },
          "disclaimer": "Educational reference and automated checklist only; not legal advice.",
          "section_321_eligible": false,
          "recommended_entry_type": "Entry Type 11 (Informal Entry) or Entry Type 01 (Formal Entry) — Section 321 de minimis duty-free treatment is barred for shipments from China/HK and goods s...",
          "fallback_entry_checklist": [
            "Obtain an active Continuous or Single-Entry Customs Bond (if Formal Entry Type 01).",
            "Prepare Commercial Invoice with 10-digit HTSUS classification, country of origin, seller/manufacturer MID code, and detailed goods description (no vague 'gif..."
          ],
          "enforcement_notes_2025_2026": [
            "2025-2026 US trade enforcement ended Section 321 ($800 de minimis) duty-free eligibility for products of China/Hong Kong and goods covered by Section 301, Se...",
            "Even where Section 321 remains available for non-restricted origins <=$800, the $800 aggregate fair retail value cap applies per person, per day across all s..."
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$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": [
                "shipment_value_usd",
                "origin",
                "subject_to_301"
              ],
              "properties": {
                "origin": {
                  "type": "string",
                  "description": "Country of origin ISO code (e.g. CN, VN,CA)"
                },
                "subject_to_301": {
                  "enum": [
                    "true",
                    "false"
                  ],
                  "type": "string",
                  "description": "Whether the HTS classification is subject to Section 301/232/201 tariffs"
                },
                "shipment_value_usd": {
                  "type": "string",
                  "description": "Shipment aggregate fair retail value in USD"
                }
              }
            }
          },
          "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",
                "inputs",
                "section_321_eligible",
                "recommended_entry_type",
                "enforcement_notes_2025_2026",
                "fallback_entry_checklist",
                "disclaimer"
              ],
              "properties": {
                "as_of": {
                  "type": "string"
                },
                "inputs": {
                  "type": "object",
                  "required": [
                    "shipment_value_usd",
                    "origin",
                    "subject_to_301"
                  ],
                  "properties": {
                    "origin": {
                      "type": "string"
                    },
                    "subject_to_301": {
                      "type": "boolean"
                    },
                    "shipment_value_usd": {
                      "type": "number"
                    }
                  }
                },
                "disclaimer": {
                  "type": "string"
                },
                "section_321_eligible": {
                  "type": "boolean"
                },
                "recommended_entry_type": {
                  "type": "string"
                },
                "fallback_entry_checklist": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "enforcement_notes_2025_2026": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-26 00:46Z
Last indexed by Roundhouse
2026-10-26 19:30Z
Last enriched (probe, favicon, geo)
2026-10-26 08:16Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service x402-niche-briefs.fly.dev and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=x402-niche-briefs.fly.dev'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://x402-niche-briefs.fly.dev/v1/de-minimis-321-eligibility, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.