x402-niche-briefs.fly.dev
Card network dispute reason code lookup & Visa Compelling Evidence 3.0 (CE3.0) rebuttal guide. Pass ?network=visa|mastercard|amex (default visa) & ?code=10.4|13.1|13.3|4853 (default 13.1). Returns dispute definition, required compelling-evidence exhibits, CE3.0 historical-order match rules, and 3-part rebuttal letter structure.
TradingLiveeip155:8453Exactvia cdp
ChargebacksDisputesVisaMastercardPayments
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
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": {
"code": "13.1",
"network": "visa"
}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-10-25",
"disclaimer": "Educational reference and automated checklist only; not legal advice.",
"matched_guide": {
"code": "13.1",
"title": "Merchandise / Services Not Received",
"network": "visa",
"category": "Consumer Dispute — Merchandise/Services Not Received",
"what_it_means": "Cardholder states they paid for physical goods or services that were never delivered by the agreed date.",
"prevention_tactics": [
"Send automated shipping confirmation and out-for-delivery emails/SMS with tracking links.",
"Require signature confirmation on orders over $250-$500."
],
"compelling_evidence_checklist": [
"Independent carrier tracking (UPS, FedEx, USPS, DHL) showing status 'Delivered' to the exact city/ZIP/address entered at checkout.",
"Signed proof of delivery (POD) or carrier delivery photo."
]
},
"requested_code": "13.1",
"requested_network": "visa",
"rebuttal_letter_structure": [
"1. Executive Summary (3-4 bullet points: Order ID, Transaction Date, Amount, AVS/CVV match, Delivery Date & Tracking Number).",
"2. Timeline of Events (chronological table from checkout -> fulfillment -> delivery scan -> post-delivery usage/support contact)."
]
}
}
},
"schema": {
"type": "object",
"$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": [
"network",
"code"
],
"properties": {
"code": {
"enum": [
"10.4",
"13.1",
"13.3",
"4853"
],
"type": "string",
"description": "Dispute reason code"
},
"network": {
"enum": [
"visa",
"mastercard",
"amex"
],
"type": "string",
"description": "Card network"
}
}
}
},
"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",
"requested_network",
"requested_code",
"matched_guide",
"rebuttal_letter_structure",
"disclaimer"
],
"properties": {
"as_of": {
"type": "string"
},
"disclaimer": {
"type": "string"
},
"matched_guide": {
"type": "object",
"required": [
"network",
"code",
"category",
"title",
"what_it_means",
"compelling_evidence_checklist",
"prevention_tactics"
],
"properties": {
"code": {
"type": "string"
},
"title": {
"type": "string"
},
"network": {
"type": "string"
},
"category": {
"type": "string"
},
"what_it_means": {
"type": "string"
},
"prevention_tactics": {
"type": "array",
"items": {
"type": "string"
}
},
"compelling_evidence_checklist": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"requested_code": {
"type": "string"
},
"requested_network": {
"type": "string"
},
"rebuttal_letter_structure": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-26 00:46Z
- Last indexed by Roundhouse
- 2026-10-26 16:50Z
- 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/chargeback-reason-code-guide, 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.