Saylor Innovations Data Desk

Name: Saylor Innovations Data Desk
Price: 0.01 USDC
Availability: InStock

Japanese address from a seven-digit postal code - prefecture, city and town in Japanese plus kana readings and the prefecture code from Japan Post data

DataLiveeip155:8453Exactvia facilitator:payAI

https://saylorinnovations.com/api/japan/postcode/:zip

Japanese postal code lookupYubin bango to addressJapan zip code prefectureTokyo postcode 100-0001Kana reading of a japanese

Calls · 30d

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far.

$15.76

Verified settled volume

1,657 settlements proven x402 by their on-chain EIP-3009 marker.

$0.010

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

0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa

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 to access this resource.",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "name": "USD Coin",
        "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "name": "USD Coin",
        "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "name": "USD Coin",
        "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpqYXBhbi1wb3N0Y29kZSIsInJlZmVyZW5jZSI6IjJBTUV4eDhpOFlDRUhtc2czalpBbjRCUms5WFpBY0ZiUHE3djRuNGIyODY5IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTMwMTM0ODc0NDJ9.JXtFDn6TUZhj2sW4PFF8ZJklZo94zu51KlN3z9s3ee4",
        "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
        "reference": "2AMExx8i8YCEHmsg3jZAn4BRk9XZAcFbPq7v4n4b2869"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpqYXBhbi1wb3N0Y29kZSIsInJlZmVyZW5jZSI6IjJHdlpSOFVkdmRnVVZER2d3aG5WY3M1bndBdUpza3UyZXpwU0VmTEtuNEtQIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTMwMTM0ODc0NDJ9.wSMkynGdYrX_vTxcsWxivuyPsmltylshvLx0kwTZ5Pk",
        "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
        "reference": "2GvZR8UdvdgUVDGgwhnVcs5nwAuJsku2ezpSEfLKn4KP"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "So11111111111111111111111111111111111111112",
      "extra": {
        "memo": "saylor:datadesk:japan-postcode",
        "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
        "native": true,
        "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpqYXBhbi1wb3N0Y29kZSIsInJlZmVyZW5jZSI6IjkzdDZ2Z3N2N2FwVkNYRUdxSlJ1dUtDYU5uMjl4UnBVYzJObXlUSjJjOXphIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjk1OTkxLCJleHAiOjE3OTMwMTM0ODc0NDJ9.FtnlZek7g1RXKHdH7wzBwKAvX_Zah9ItnVKuilRnpdc",
        "reference": "93t6vgsv7apVCXEGqJRuuKCaNn29xRpUc2NmyTJ2c9za",
        "solUsdPrice": 101.05,
        "quotedLamports": "98960"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "95991",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://saylorinnovations.com/api/japan/postcode/1000001",
    "tags": [
      "japanese postal code lookup",
      "yubin bango to address",
      "japan zip code prefecture",
      "tokyo postcode 100-0001",
      "kana reading of a japanese"
    ],
    "iconUrl": "https://saylorinnovations.com/og-image.jpg",
    "mimeType": "application/json",
    "description": "Japanese address from a seven-digit postal code - prefecture, city and town in Japanese plus kana readings and the prefecture code from Japan Post data",
    "serviceName": "Saylor Innovations Data Desk"
  },
  "extensions": {
    "tags": [
      "japanese postal code lookup",
      "yubin bango to address",
      "japan zip code prefecture and city",
      "tokyo postcode 100-0001",
      "kana reading of a japanese address",
      "japan post address search"
    ],
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "pathParams": {
            "zip": "1000001"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "source": "Japan Post data via zipcloud",
            "matches": 1,
            "postcode": "100-0001",
            "addresses": [
              {
                "city": "千代田区",
                "town": "千代田",
                "city_kana": "ﾁﾖﾀﾞｸ",
                "town_kana": "ﾁﾖﾀﾞ",
                "prefecture": "東京都",
                "prefecture_code": "13",
                "prefecture_kana": "ﾄｳｷｮｳﾄ"
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "pathParams"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object",
                "required": [
                  "zip"
                ],
                "properties": {
                  "zip": {
                    "type": "string",
                    "description": "Seven-digit postal code in the path, e.g. 1000001 or 100-0001"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "json"
              },
              "example": {
                "type": "object",
                "required": [
                  "postcode",
                  "addresses"
                ],
                "properties": {
                  "source": {
                    "type": "string",
                    "description": "Data source the values come from"
                  },
                  "matches": {
                    "type": "number",
                    "description": "Matching items"
                  },
                  "postcode": {
                    "type": "string"
                  },
                  "addresses": {
                    "type": "array"
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/japan/postcode/:zip"
    },
    "method": "GET",
    "example": {
      "source": "Japan Post data via zipcloud",
      "matches": 1,
      "postcode": "100-0001",
      "addresses": [
        {
          "city": "千代田区",
          "town": "千代田",
          "city_kana": "ﾁﾖﾀﾞｸ",
          "town_kana": "ﾁﾖﾀﾞ",
          "prefecture": "東京都",
          "prefecture_code": "13",
          "prefecture_kana": "ﾄｳｷｮｳﾄ"
        }
      ]
    },
    "license": "LicenseRef-Saylor-Agent-Use-1.0",
    "mimeType": "application/json",
    "freshness": "fetched live (cached up to 1 hour for large reference files)",
    "pathParam": "zip",
    "tokenCount": null,
    "inputSchema": {
      "zip": "Seven-digit postal code in the path, e.g. 1000001 or 100-0001"
    },
    "serviceName": "Saylor Innovations Data Desk",
    "instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
    "outputSchema": {
      "type": "object",
      "required": [
        "postcode",
        "addresses"
      ],
      "properties": {
        "source": {
          "type": "string"
        },
        "matches": {
          "type": "number"
        },
        "postcode": {
          "type": "string"
        },
        "addresses": {
          "type": "array"
        }
      }
    },
    "noPathTemplate": false,
    "settlementModes": [
      "facilitator-transaction",
      "self-submitted-reference"
    ],
    "typicalLatencyMs": 700
  },
  "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.

0.01USDC≈ $0.01 USD

on Base · exact scheme

Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.

Paid to: 0xA2A8…fc8aa
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 10000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "memo": "saylor:datadesk:japan-postcode",
      "name": "USD Coin",
      "version": "2",
      "facilitatorOnly": true,
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "zip": "1000001"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "source": "Japan Post data via zipcloud",
          "matches": 1,
          "postcode": "100-0001",
          "addresses": [
            {
              "city": "千代田区",
              "town": "千代田",
              "city_kana": "ﾁﾖﾀﾞｸ",
              "town_kana": "ﾁﾖﾀﾞ",
              "prefecture": "東京都",
              "prefecture_code": "13",
              "prefecture_kana": "ﾄｳｷｮｳﾄ"
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "pathParams"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object",
              "required": [
                "zip"
              ],
              "properties": {
                "zip": {
                  "type": "string",
                  "description": "Seven-digit postal code in the path, e.g. 1000001 or 100-0001"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "json"
            },
            "example": {
              "type": "object",
              "required": [
                "postcode",
                "addresses"
              ],
              "properties": {
                "source": {
                  "type": "string",
                  "description": "Data source the values come from"
                },
                "matches": {
                  "type": "number",
                  "description": "Matching items"
                },
                "postcode": {
                  "type": "string"
                },
                "addresses": {
                  "type": "array"
                }
              }
            }
          }
        }
      }
    },
    "routeTemplate": "/api/japan/postcode/:zip"
  }
}

Provenance

Seen in the source catalog: 2026-10-25 14:12Z
Last indexed by Roundhouse: 2026-10-26 12:46Z
Last enriched (probe, favicon, geo): 2026-10-26 11:16Z
x402 version: 2
Max timeout: 120s
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far. 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 Saylor Innovations Data Desk 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=Saylor%20Innovations%20Data%20Desk'
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://saylorinnovations.com/api/japan/postcode/:zip, 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.