source-claim-proof.mattskowronis.workers.dev
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SearchLiveeip155:8453Exactvia cdp
Calls · 30d
6↓ 4.4%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$2.07
Verified settled volume
69 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.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-09-14 19:53Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x22B3D4485C8Dcd8FC4840a7570664747c9055530The 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≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x22B3…55530. The signed payment is good for 5 minutes.
- Paid to
- 0x22B3…55530
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x22B3D4485C8Dcd8FC4840a7570664747c9055530",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com/event",
"claim": "The event begins at 7:00 PM."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"claim": "The event begins at 7:00 PM.",
"verdict": "supported",
"evidence": [
{
"text": "Doors 6:30 PM. Program begins at 7:00 PM.",
"location": "Schedule",
"polarity": "supports",
"evidence_type": "visible_text"
}
],
"final_url": "https://example.com/event",
"source_url": "https://example.com/event",
"content_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"retrieved_at": "2026-08-18T22:00:00.000Z",
"source_status": "verified",
"service_version": "1.0.0",
"retrieval_method": "direct_http",
"reasoning_summary": "Visible schedule text states the program begins at 7:00 PM."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"url",
"claim"
],
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public HTTP or HTTPS source page URL to inspect."
},
"claim": {
"type": "string",
"maxLength": 500,
"minLength": 3,
"description": "One atomic factual assertion to check against that source only."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"verdict",
"claim",
"source_url",
"final_url",
"source_status",
"evidence",
"reasoning_summary",
"retrieval_method",
"retrieved_at",
"content_hash",
"service_version"
],
"properties": {
"claim": {
"type": "string",
"description": "The claim that was checked."
},
"verdict": {
"enum": [
"supported",
"contradicted",
"insufficient_evidence"
],
"type": "string",
"description": "supported, contradicted, or insufficient_evidence."
},
"evidence": {
"type": "array",
"items": {
"type": "object",
"required": [
"text",
"location",
"evidence_type",
"polarity"
],
"properties": {
"text": {
"type": "string",
"maxLength": 240,
"description": "Source snippet that supports or contradicts the claim."
},
"location": {
"type": [
"string",
"null"
],
"description": "Page location of the snippet, or null if unknown."
},
"polarity": {
"enum": [
"supports",
"contradicts",
"neutral"
],
"type": "string",
"description": "Whether the snippet supports, contradicts, or is neutral."
},
"evidence_type": {
"enum": [
"visible_text",
"heading",
"json_ld",
"meta",
"status"
],
"type": "string",
"description": "Where the snippet came from on the source page."
}
},
"additionalProperties": false
},
"maxItems": 3,
"description": "Compact source snippets used for the verdict."
},
"final_url": {
"type": "string",
"description": "Final URL after redirects."
},
"source_url": {
"type": "string",
"description": "Requested source URL."
},
"content_hash": {
"type": "string",
"description": "Hash of retrieved source content."
},
"retrieved_at": {
"type": "string",
"description": "UTC timestamp of the check."
},
"source_status": {
"enum": [
"verified",
"blocked",
"unreachable",
"unsupported",
"insufficient_evidence"
],
"type": "string",
"description": "verified, blocked, unreachable, unsupported, or insufficient_evidence."
},
"service_version": {
"type": "string",
"description": "Source Claim Proof service version."
},
"retrieval_method": {
"enum": [
"direct_http",
"browser_run",
"official_api",
"unsupported"
],
"type": "string",
"description": "How the source page was fetched."
},
"reasoning_summary": {
"type": "string",
"maxLength": 400,
"description": "Short machine-readable reason for the verdict."
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-14 19:53Z
- Last indexed by Roundhouse
- 2026-09-24 22:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 08:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service source-claim-proof.mattskowronis.workers.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=source-claim-proof.mattskowronis.workers.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://source-claim-proof.mattskowronis.workers.dev/v1/verify, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.