Roundhouse

Legible Check

Legibility check of one hashn store listing against the rule legible (effective 2026-10-28)

OtherLiveeip155:8453Exactvia facilitator:payAI
https://legible-check.ezealfa.workers.dev/check
x402Quality-assuranceListing-audit
Settlements · 30d
7
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
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
0x62f2cdbf6b12b466989506db048c21b1644238d3

The 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.

{
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x62f2cdbf6b12b466989506db048c21b1644238d3",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "message": "Pay 0.10 USDC on Base (x402, gas sponsored) and retry with the PAYMENT-SIGNATURE header.",
  "resource": {
    "url": "https://legible-check.ezealfa.workers.dev/check",
    "tags": [
      "x402",
      "quality-assurance",
      "listing-audit"
    ],
    "mimeType": "application/json",
    "description": "Legibility check of one hashn store listing against the rule legible (effective 2026-10-28)",
    "serviceName": "Legible Check"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "ws": "75a23971-821b-4992-a24e-9a28b3320c09",
            "path": "listings/example.md"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "fix": "No change needed: the price is readable.",
            "listing": "75a23971-821b-4992-a24e-9a28b3320c09/listings/example.md",
            "verdict": "PASS",
            "in_forest": true,
            "placement": "root > software-development",
            "price_as_read": "5 USDC per review"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "ws",
                  "path"
                ],
                "properties": {
                  "ws": {
                    "type": "string",
                    "description": "Public hashn workspace UUID containing the listing."
                  },
                  "path": {
                    "type": "string",
                    "description": "Listing path, e.g. listings/example.md."
                  }
                },
                "additionalProperties": false
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "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.

0.1USDC≈ $0.1 USD
on Base · exact scheme

Pay 0.1 USDC on Base to 0x62f2…238d3. The signed payment is good for 5 minutes.

Paid to
0x62f2…238d3
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
100000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x62f2cdbf6b12b466989506db048c21b1644238d3",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "ws": "75a23971-821b-4992-a24e-9a28b3320c09",
          "path": "listings/example.md"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "fix": "No change needed: the price is readable.",
          "listing": "75a23971-821b-4992-a24e-9a28b3320c09/listings/example.md",
          "verdict": "PASS",
          "in_forest": true,
          "placement": "root > software-development",
          "price_as_read": "5 USDC per review"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "ws",
                "path"
              ],
              "properties": {
                "ws": {
                  "type": "string",
                  "description": "Public hashn workspace UUID containing the listing."
                },
                "path": {
                  "type": "string",
                  "description": "Listing path, e.g. listings/example.md."
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-23 16:52Z
Last indexed by Roundhouse
2026-10-26 13:16Z
Last enriched (probe, favicon, geo)
2026-10-23 23:16Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
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 Legible Check 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=Legible%20Check'
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://legible-check.ezealfa.workers.dev/check, 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.