Paper-cluster retrieval comparis
Compare paired frozen-cohort recovery with seeded whole-paper cluster resampling (100–2000 replicates, 2–64 papers, 64 questions). Report a descriptive percentile interval for question-weighted complete-recovery delta. No question-level bootstrap, significance test, or population guarantee. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.
SearchLiveeip155:8453Exactvia cdp
ContextRetrievalCluster-comparisonBounded-computationEvidence
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 snapshots so far.
$71.48
Verified settled volume
1,272 settlements proven x402 by their on-chain EIP-3009 marker.
$0.144
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 2026-10-16 03:56Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28The 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.
0.144001USDC≈ $0.144001 USD
on Base · exact scheme
Pay 0.144001 USDC on Base to 0xec84…2de28. The signed payment is good for 1 minute.
- Paid to
- 0xec84…2de28
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 144001 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
"amount": "144001",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"seed": 7,
"baseline": {
"runId": "baseline",
"cohortSha256": "sha256:874ebcbb47229979ed9499f3733e3f483b970ceb0b0c1f9bc52c734f3176d8f2",
"observations": [
{
"paperId": "paper-a",
"questionId": "q1",
"retrievedEvidenceIds": [
"a1"
]
},
{
"paperId": "paper-b",
"questionId": "q2",
"retrievedEvidenceIds": [
"b1"
]
}
]
},
"evidence": [
{
"paperId": "paper-a",
"evidenceId": "a1"
},
{
"paperId": "paper-a",
"evidenceId": "a2"
},
{
"paperId": "paper-b",
"evidenceId": "b1"
}
],
"paperIds": [
"paper-a",
"paper-b"
],
"candidate": {
"runId": "candidate",
"cohortSha256": "sha256:874ebcbb47229979ed9499f3733e3f483b970ceb0b0c1f9bc52c734f3176d8f2",
"observations": [
{
"paperId": "paper-a",
"questionId": "q1",
"retrievedEvidenceIds": [
"a1",
"a2"
]
},
{
"paperId": "paper-b",
"questionId": "q2",
"retrievedEvidenceIds": []
}
]
},
"dataClass": "synthetic",
"questions": [
{
"paperId": "paper-a",
"questionId": "q1",
"expectedEvidenceIds": [
"a1",
"a2"
]
},
{
"paperId": "paper-b",
"questionId": "q2",
"expectedEvidenceIds": [
"b1"
]
}
],
"resamples": 200,
"corpusHash": "sha256:5e1bf4f25cdc1fc0fbcbb2240affabbd808fd2ba8fa1ce0b6723dac5dc682759"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"data": {
"version": "maha-legacy-adapter/1",
"productId": "paper-cluster-retrieval-comparison",
"chargedAmount": "144001",
"sourceContractAmount": "144000"
},
"proof": {},
"success": true
}
}
},
"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",
"required": [
"dataClass",
"corpusHash",
"paperIds",
"evidence",
"questions",
"baseline",
"candidate",
"seed",
"resamples"
],
"properties": {
"seed": {
"type": "integer",
"maximum": 4294967295,
"minimum": 0
},
"baseline": {
"type": "object"
},
"evidence": {
"type": "array",
"maxItems": 64,
"minItems": 1
},
"paperIds": {
"type": "array",
"maxItems": 64,
"minItems": 1
},
"candidate": {
"type": "object"
},
"dataClass": {
"enum": [
"public",
"synthetic"
],
"type": "string"
},
"questions": {
"type": "array",
"maxItems": 64,
"minItems": 1
},
"resamples": {
"type": "integer",
"maximum": 2000,
"minimum": 100
},
"corpusHash": {
"type": "string",
"maxLength": 71
}
},
"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",
"required": [
"success",
"data",
"proof"
],
"properties": {
"data": {
"type": "object"
},
"proof": {
"type": "object"
},
"success": {
"const": true
}
},
"additionalProperties": false
}
}
}
}
}
},
"maha-modular-contract": {
"info": {
"id": "paper-cluster-retrieval-comparison",
"contractHash": "sha256:b015e0293d9177e98d2634ff5c7928e867ec8d2311f4c0a7b93331a1bfb13a7f",
"declarationUrl": "https://www.mahastrategies.com/api/v1/discovery/describe?id=paper-cluster-retrieval-comparison",
"requiresBuyerRecoveryAdapter": true
},
"schema": {
"type": "object"
}
},
"maha-input-bound-recovery": {
"info": {
"binding": {
"nonce": "0x + lowercase HEX(SHA256(RFC8785({version,productId,inputHash,recoverySecret})))",
"version": "maha-api-v1/1",
"inputHash": "sha256: + lowercase HEX(SHA256(RFC8785(strictly parsed input)))",
"productId": "paper-cluster-retrieval-comparison",
"recoverySecret": "32 cryptographically random bytes encoded as 64 lowercase hexadecimal characters; keep private",
"automaticRepayment": false,
"paymentSignatureHeader": "base64 x402-v2 PaymentPayload with EIP-3009 TransferWithAuthorization"
},
"version": "1",
"withdrawal": "stops-new-purchases; retained-paid-result-remains-recoverable",
"secretHeader": "X-Maha-Recovery-Secret",
"inputHashHeader": "X-Maha-Input-Hash",
"retentionSeconds": 86400,
"automaticRepayment": false,
"complimentaryCorrection": false,
"receiptRetentionSeconds": 7776000
},
"schema": {
"type": "object"
}
}
}Provenance
- Seen in the source catalog
- 2026-10-16 03:56Z
- Last indexed by Roundhouse
- 2026-10-20 07:10Z
- Last enriched (probe, favicon, geo)
- 2026-10-16 09:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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. 9 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 Paper-cluster retrieval comparis 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=Paper-cluster%20retrieval%20comparis' 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://www.mahastrategies.com/api/v1/context/retrieval/cluster-comparison, 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.