penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev
No description published for this endpoint.
OtherLiveeip155:8453Exactvia facilitator:thirdweb
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.36
Verified settled volume
16 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xce53bde2C7a639fc5526AC006a8A7866625d1342The 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "authorization",
"assetTransferMethod": "eip3009"
},
"payTo": "0xce53bde2C7a639fc5526AC006a8A7866625d1342",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev/v1/probes/column-completeness",
"tags": [
"quality",
"column-completeness"
],
"mimeType": "application/json",
"description": "For supplied field names, distinguish absent keys, explicit nulls, blank strings and populated values across JSON records.",
"serviceName": "Penny Army Research"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"rows": [
{
"sku": "A-100",
"price": 0,
"title": "Desk"
},
{
"sku": "A-101",
"price": null,
"title": " "
},
{
"sku": "A-102"
},
{
"sku": "A-103",
"price": 19.5,
"title": "Lamp"
}
],
"fields": [
"sku",
"title",
"price"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"result": {
"rows": 4,
"columns": [
{
"field": "sku",
"nulls": 0,
"absent": 0,
"blanks": 0,
"populated": 4
},
{
"field": "title",
"nulls": 0,
"absent": 1,
"blanks": 1,
"populated": 2
},
{
"field": "price",
"nulls": 1,
"absent": 1,
"blanks": 0,
"populated": 2
}
]
},
"test_only": false,
"utility_id": "column-completeness",
"schema_version": "research-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",
"$defs": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/properties/input/properties/body/$defs/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/properties/input/properties/body/$defs/__schema0"
}
}
]
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"rows",
"fields"
],
"properties": {
"rows": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string",
"maxLength": 128
},
"additionalProperties": {
"$ref": "#/properties/input/properties/body/$defs/__schema0"
}
},
"maxItems": 128
},
"fields": {
"type": "array",
"items": {
"type": "string",
"maxLength": 128,
"minLength": 1
},
"maxItems": 64
}
},
"description": "For supplied field names, distinguish absent keys, explicit nulls, blank strings and populated values across JSON records. At most 128 rows and 64 field names, subject to shared byte/complexity limits. No nested-path, type, schema, factual or source validation. A local presence/null/blank counting loop or repeated model counting. Compare with an existing local transform before purchasing; no token or cost savings are guaranteed. JSON input required (415 otherwise). Invalid input 400; byte limit 413; unsupported syntax/domain or oversized output 422 without settlement; capacity/rate limit 429; unavailable/paused/unresolved 503. Conflicting or expired evidence 409. Never create replacement payment after an uncertain outcome; use original-evidence recovery.",
"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",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"schema_version",
"utility_id",
"test_only",
"result"
],
"properties": {
"result": {
"type": "object",
"required": [
"rows",
"columns"
],
"properties": {
"rows": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"columns": {
"type": "array",
"items": {
"type": "object",
"required": [
"field",
"absent",
"nulls",
"blanks",
"populated"
],
"properties": {
"field": {
"type": "string"
},
"nulls": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"absent": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"blanks": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"populated": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
}
},
"additionalProperties": false
}
}
},
"additionalProperties": false
},
"test_only": {
"type": "boolean",
"const": false
},
"utility_id": {
"type": "string",
"const": "column-completeness"
},
"schema_version": {
"type": "string",
"const": "research-1"
}
},
"description": "Deterministic counts of own top-level keys. Blank means a string whose trim() is empty. Zero, false, empty arrays and empty objects are populated. Duplicate field names are counted once in first-occurrence order. At most 128 rows and 64 field names, subject to shared byte/complexity limits. No nested-path, type, schema, factual or source validation. Same valid input and implementation version produce the same result; this is not an external correctness certification. No upstream API or model call. Results may contain supplied fields and are retained in the shared result store. Do not submit secrets or private data. Recovery expires 24 hours after claim; physical deletion/backups follow existing environment policy.",
"additionalProperties": false
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$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"
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0xce53…d1342. The signed payment is good for 1 minute.
- Paid to
- 0xce53…d1342
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 50000 smallest units
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "authorization",
"assetTransferMethod": "eip3009"
},
"payTo": "0xce53bde2C7a639fc5526AC006a8A7866625d1342",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev/v1/probes/column-completeness",
"description": "",
"maxAmountRequired": "50000",
"maxTimeoutSeconds": 60
}
]Provenance
- Seen in the source catalog
- 2026-09-30 16:36Z
- Last indexed by Roundhouse
- 2026-10-26 08:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-02 19:45Z
- x402 version
- 1
- Max timeout
- 60s
- 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
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 penny-army-reference-mainnet.spruceboundgranitestudio.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=penny-army-reference-mainnet.spruceboundgranitestudio.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://penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev/v1/probes/column-completeness, 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.