AttestPage

Checks a quote word for word against text you hold: exact, fuzzy or none, offsets. US$0.005 per call; POST text, quote.

SearchUnknowneip155:84532Exactvia facilitator:payAI
Fact-checkVerify-quoteGroundingHallucinationOffline
Settlements · 30d
1
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.002
Verified settled volume
1 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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
0xe8F27F699b583B188446e5A92c2A489f121653E6

The wallet the 402 directs payment to. Its full payment record is on the merchant page.

Asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e

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.

Recent payments · which agents last used it

Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.

Payer PayeeChainAmountx402RouteAgeTxn hash
0xb4dd…3d310xe8f2…53e6Base SepoliaBase Sepolia$0.002100%payAI27d ago0xbc696e…b1363e

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.

0.005USDC≈ $0.005 USD
on Base Sepolia · exact scheme

Pay 0.005 USDC on Base Sepolia to 0xe8F2…653E6. The signed payment is good for 2 minutes.

USD Coin (Base Sepolia) contract
0x036C…dCF7e
Payment window
2 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "extra": {
      "name": "USDC",
      "version": "2"
    },
    "payTo": "0xe8F27F699b583B188446e5A92c2A489f121653E6",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:84532",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "text": "Refunds are paid within 14 days of purchase, to the card that was used.",
          "match": "fuzzy",
          "quote": "refunds are paid within 14 days",
          "case_sensitive": false
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "discoverable": true
      },
      "output": {
        "type": "json",
        "example": {
          "tier": "paid",
          "advice": "The supplied text contains a close match to this quote, with small differences. This says nothing about where the text came from.",
          "result": {
            "end": 34,
            "match": "fuzzy",
            "score": 0.972,
            "start": 0,
            "source": {
              "kind": "supplied",
              "code_points": 79,
              "text_sha256": "…"
            },
            "context": "Refunds are paid within 14 days of purchase",
            "occurrences": 1,
            "normalised_sha256": "…"
          },
          "receipt": "eyJ…",
          "injection_flags": []
        }
      }
    },
    "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": [
                "text",
                "quote"
              ],
              "properties": {
                "end": {
                  "type": "integer",
                  "minimum": 1,
                  "description": "Optional, with start: the declared end offset, raw code points, exclusive. Give both or neither; not with match \"passages\"."
                },
                "text": {
                  "type": "string",
                  "description": "The source text you already hold, as sent (max 50,000 characters, and the whole request body is capped at 256 KB of UTF-8, so 50,000 characters of 4-byte text fit; no fetch, no normalising before hashing). Offsets count characters (code points)."
                },
                "match": {
                  "enum": [
                    "exact",
                    "fuzzy",
                    "passages"
                  ],
                  "type": "string",
                  "description": "exact; fuzzy (default), which also accepts small differences; or passages, for a paraphrased claim: the 3 passages of the text that share most of its words, scored, as evidence for you to judge (not a verdict). Not with start and end."
                },
                "quote": {
                  "type": "string",
                  "description": "Text to look for in the source, or with match \"passages\" the claim to find support for (max 1,000 characters after normalisation)."
                },
                "start": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Optional, with end: the declared start offset of the quote in text, raw code points, 0-based. Only that slice is matched (max 1,000 code points), so the answer is whether the text at these offsets says the quote. Declared offsets are raw; result offsets are into the normalised text. If the slice misses but the quote is elsewhere in the text, result.located gives its position in the whole text. On a slice miss where a number differs, the answer carries match_verdict changed_number and nearest, the closest span on the slice with its diff. nearest offsets count into the slice's normalised text, not the whole text."
                },
                "threshold": {
                  "type": "number",
                  "maximum": 1,
                  "minimum": 0.5,
                  "description": "Fuzzy similarity needed, default 0.9."
                },
                "case_sensitive": {
                  "type": "boolean",
                  "description": "Default false; must be false with match \"passages\"."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "discoverable": {
              "type": "boolean",
              "const": true
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "result",
                "receipt"
              ],
              "properties": {
                "tier": {
                  "type": "string"
                },
                "advice": {
                  "type": "string"
                },
                "result": {
                  "type": "object",
                  "description": "match, score, occurrences; in search mode start, end (into the normalised text), context and normalised_sha256; with start and end, declared { start, end, slice_sha256, slice_matches } (raw offsets) and no start/end; when the slice misses but the quote is elsewhere in the text, located { match, score, start, end, occurrences, offsets: \"normalised\" } for the whole text; source { kind: \"supplied\", text_sha256, code_points }; with match \"passages\" also passages, scorer and note."
                },
                "receipt": {
                  "type": "string"
                },
                "injection_flags": {
                  "type": "array",
                  "description": "Prompt-injection signals found in the supplied text."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-21 17:59Z
Last indexed by Roundhouse
2026-10-27 22:45Z
Last enriched (probe, favicon, geo)
–
x402 version
2
Max timeout
120s
Liveness probe
Not probed
Report

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.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service AttestPage 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=AttestPage'
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://s2h6qt73jtzlgbgnnfacln2poq.srv.us/v1/verify/text-quote, 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://preview.roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://preview.roundhouseai.io/skill.md first — it is the whole procedure.