Web Evidence
Retrieve deterministic evidence from a public HTTPS page
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Pay 0.01 USDC on Base to 0x2602…366da. The signed payment is good for 5 minutes.
- Paid to
- 0x2602…366da
- 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": "0x26026370fe8b2bb17af9092a17691c76519366da",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com/",
"maxChars": 5000,
"includeLinks": false,
"includeAccessibilityTree": false
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"page": {
"title": "Example Domain",
"language": "en",
"markdown": "# Example Domain\n\nThis domain is for use in illustrative examples in documents.\n",
"canonical": null
},
"source": {
"status": 200,
"finalUrl": "https://example.com/",
"retrievedAt": "2026-01-01T00:00:00.000Z",
"requestedUrl": "https://example.com/"
},
"timings": {
"loadMs": 0,
"extractMs": 0
},
"warnings": [],
"integrity": {
"sha256": "b6bdcd206468c6a8d071af581b180ce6a96166dddadc59b04acd4ee32a9c2ed3",
"extractionVersion": "chromium-readability-1"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"format": "uri",
"maxLength": 2048
},
"maxChars": {
"type": "integer",
"default": 30000,
"maximum": 30000,
"minimum": 1
},
"includeLinks": {
"type": "boolean",
"default": false
},
"includeAccessibilityTree": {
"type": "boolean",
"default": false
}
},
"additionalProperties": false
},
"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",
"$defs": {
"accessibilityNode": {
"type": "object",
"required": [
"role"
],
"properties": {
"name": {
"type": "string"
},
"role": {
"type": "string"
},
"level": {
"type": "integer"
},
"value": {
"type": "string"
},
"states": {
"type": "array",
"items": {
"type": "string"
}
},
"children": {
"type": "array",
"items": {
"$ref": "#/properties/output/properties/example/$defs/accessibilityNode"
}
},
"description": {
"type": "string"
}
},
"additionalProperties": false
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"source",
"page",
"integrity",
"timings",
"warnings"
],
"properties": {
"page": {
"type": "object",
"required": [
"title",
"canonical",
"language",
"markdown"
],
"properties": {
"links": {
"type": "array",
"items": {
"type": "object",
"required": [
"url",
"text"
],
"properties": {
"url": {
"type": "string",
"format": "uri"
},
"text": {
"type": "string"
}
},
"additionalProperties": false
},
"maxItems": 1000
},
"title": {
"type": [
"string",
"null"
]
},
"language": {
"type": [
"string",
"null"
]
},
"markdown": {
"type": "string",
"maxLength": 30000
},
"canonical": {
"type": [
"string",
"null"
]
},
"accessibilityTree": {
"anyOf": [
{
"$ref": "#/properties/output/properties/example/$defs/accessibilityNode"
},
{
"type": "null"
}
]
}
},
"additionalProperties": false
},
"source": {
"type": "object",
"required": [
"requestedUrl",
"finalUrl",
"status",
"retrievedAt"
],
"properties": {
"status": {
"type": "integer",
"maximum": 599,
"minimum": 100
},
"finalUrl": {
"type": "string",
"format": "uri"
},
"retrievedAt": {
"type": "string",
"format": "date-time"
},
"requestedUrl": {
"type": "string",
"format": "uri"
}
},
"additionalProperties": false
},
"timings": {
"type": "object",
"required": [
"loadMs",
"extractMs"
],
"properties": {
"loadMs": {
"type": "integer",
"minimum": 0
},
"extractMs": {
"type": "integer",
"minimum": 0
}
},
"additionalProperties": false
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"integrity": {
"type": "object",
"required": [
"sha256",
"extractionVersion"
],
"properties": {
"sha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"extractionVersion": {
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
}
},
"builder-code": {
"info": {
"s": [
"cdp_sdk_server"
]
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
},
"payment-identifier": {
"info": {
"required": true
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
}Provenance
- Seen in the source catalog
- 2026-09-11 00:10Z
- Last indexed by Roundhouse
- 2026-09-24 07:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 17:45Z
- 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. 14 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 Web Evidence 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=Web%20Evidence' 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://evidence.api.williamrobinson.dev/v1/web/evidence, 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.