x402-niche-briefs.fly.dev
Deterministic parcel dimensional weight vs actual billable weight calculator. Pass ?length_in=14&width_in=10&height_in=6&actual_lb=3.2&divisor=139. Compares UPS/FedEx (139 divisor) and USPS Ground Advantage (166 divisor >1 cu ft), cubic size, length+girth oversize risk, and billable weight saved by trimming carton height by 1 inch.
TradingLiveeip155:8453Exactvia cdp
Dim-weightShippingPackagingLogisticsUps
Settlements · 30d
350↑ 8550%
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
0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9The 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≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x847f…b03A9. The signed payment is good for 5 minutes.
- Paid to
- 0x847f…b03A9
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"divisor": "139",
"width_in": "10",
"actual_lb": "3.2",
"height_in": "6",
"length_in": "14"
}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-10-25",
"inputs": {
"divisor": 139,
"width_in": 10,
"actual_lb": 3.2,
"height_in": 6,
"length_in": 14
},
"geometry": {
"cubic_feet": 0.49,
"cubic_inches": 840,
"length_plus_girth_in": 46,
"exceeds_one_cubic_foot": false,
"oversize_surcharge_risk": false
},
"weight_comparison": {
"billed_by": "dimensional_weight",
"actual_weight_lb": 3.2,
"actual_rounded_lb": 4,
"billable_weight_lb": 7,
"dim_weight_exact_lb": 6.04,
"dim_weight_rounded_lb": 7,
"usps_ground_advantage_billable_lb": 4
},
"rightsizing_opportunity": {
"recommendation": "You are paying for 3 lb of 'air'. Switching to a multi-depth scored carton or poly mailer (if non-fragile) directly lowers carrier zone rates.",
"one_inch_height_reduction_billable_lb": 6,
"billable_lb_saved_by_trimming_1_inch_height": 1
}
}
}
},
"schema": {
"type": "object",
"$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": [
"length_in",
"width_in",
"height_in",
"actual_lb"
],
"properties": {
"divisor": {
"type": "string",
"description": "Carrier DIM divisor (default 139 for UPS/FedEx, 166 for USPS)"
},
"width_in": {
"type": "string",
"description": "Carton width in inches"
},
"actual_lb": {
"type": "string",
"description": "Actual scale weight in pounds"
},
"height_in": {
"type": "string",
"description": "Carton height in inches"
},
"length_in": {
"type": "string",
"description": "Carton length in inches"
}
}
}
},
"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",
"geometry",
"weight_comparison",
"rightsizing_opportunity"
],
"properties": {
"as_of": {
"type": "string"
},
"inputs": {
"type": "object",
"required": [
"length_in",
"width_in",
"height_in",
"actual_lb",
"divisor"
],
"properties": {
"divisor": {
"type": "number"
},
"width_in": {
"type": "number"
},
"actual_lb": {
"type": "number"
},
"height_in": {
"type": "number"
},
"length_in": {
"type": "number"
}
}
},
"geometry": {
"type": "object",
"required": [
"cubic_inches",
"cubic_feet",
"length_plus_girth_in",
"exceeds_one_cubic_foot",
"oversize_surcharge_risk"
],
"properties": {
"cubic_feet": {
"type": "number"
},
"cubic_inches": {
"type": "number"
},
"length_plus_girth_in": {
"type": "number"
},
"exceeds_one_cubic_foot": {
"type": "boolean"
},
"oversize_surcharge_risk": {
"type": "boolean"
}
}
},
"weight_comparison": {
"type": "object",
"required": [
"actual_weight_lb",
"actual_rounded_lb",
"dim_weight_exact_lb",
"dim_weight_rounded_lb",
"billable_weight_lb",
"billed_by",
"usps_ground_advantage_billable_lb"
],
"properties": {
"billed_by": {
"type": "string"
},
"actual_weight_lb": {
"type": "number"
},
"actual_rounded_lb": {
"type": "number"
},
"billable_weight_lb": {
"type": "number"
},
"dim_weight_exact_lb": {
"type": "number"
},
"dim_weight_rounded_lb": {
"type": "number"
},
"usps_ground_advantage_billable_lb": {
"type": "number"
}
}
},
"rightsizing_opportunity": {
"type": "object",
"required": [
"one_inch_height_reduction_billable_lb",
"billable_lb_saved_by_trimming_1_inch_height",
"recommendation"
],
"properties": {
"recommendation": {
"type": "string"
},
"one_inch_height_reduction_billable_lb": {
"type": "number"
},
"billable_lb_saved_by_trimming_1_inch_height": {
"type": "number"
}
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-26 00:46Z
- Last indexed by Roundhouse
- 2026-10-27 00:50Z
- Last enriched (probe, favicon, geo)
- 2026-10-26 08:16Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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.
Show the promptHide 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/dimensional-weight-calc, 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.