JPYC Service Monitor

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": "0x52d4901142e2B5680027da5EB47C86CB02a3cA81",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://open-pay.jp/api/paid/usdc/jpyc/services",
      "description": "JPYC Service Monitor: weekly change feed for Japan-related JPYC and Web3 services. Each event is dated, typed (added / updated / removed / verified) and tied to an official source URL. Call with changedSince=YYYY-MM-DD set to your last run date to fetch only what changed; an empty changes list explicitly means no change, so a scheduled agent can report that without guessing. Without changedSince you get the full monitor snapshot.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "discoverable": true
        }
      },
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Accepts

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

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x52d4901142e2B5680027da5EB47C86CB02a3cA81",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "changedSince": "2026-08-20"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "mode": "delta",
          "query": {
            "limit": 200,
            "changedSince": "2026-08-20"
          },
          "notice": {
            "code": "sourced-facts-only",
            "detail": "Change events and rows summarize what official sources state; they are not availability guarantees or endorsements.",
            "termsUrl": "https://open-pay.jp/en/terms"
          },
          "changes": [
            {
              "date": "2026-08-27",
              "slug": "jpyc-ex",
              "summary": "Re-verified against the official source; no factual change.",
              "sourceUrl": "https://jpyc.co.jp/",
              "summaryJa": "公式ソースで再確認。事実関係の変更なし。",
              "changeType": "verified"
            }
          ],
          "services": [
            {
              "name": "JPYC EX",
              "slug": "jpyc-ex",
              "chains": [
                "avalanche",
                "ethereum",
                "polygon"
              ],
              "nameJa": "JPYC EX",
              "status": "published",
              "category": "exchange",
              "sourceOk": true,
              "sourceUrl": "https://jpyc.co.jp/",
              "verifiedAt": "2026-08-27",
              "supportsJpyc": true,
              "supportsUsdc": false,
              "supportsX402": false,
              "sourceCheckedAt": "2026-08-27T01:00:00.000Z"
            }
          ],
          "attribution": [
            "JPYC株式会社"
          ],
          "generatedAt": "2026-08-27T01:23:45.000Z",
          "licenseNotice": "Facts summarized from official sources; source rights remain with their owners.",
          "schemaVersion": "1.0",
          "totalServices": 20
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "limit": {
                  "type": "string",
                  "description": "1-200 (default 200)"
                },
                "changedSince": {
                  "type": "string",
                  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
                  "description": "Return only changes on/after this date (YYYY-MM-DD). Set to your last run date. Omit for the full snapshot."
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-08-27 01:16Z

Last indexed by Roundhouse

2026-09-25 01:30Z

Last enriched (probe, favicon, geo)

2026-09-12 08:15Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402