Roundhouse AI

data.japanagent.dev

x402-native Japan-action API for global AI agents. Verify Japanese identifiers, search municipal grants, run multi-minute Japanese research. No API key, wallet-auth, per-call USDC on Base mainnet.

DataLiveeip155:8453Exactvia cdp
https://data.japanagent.dev/vuln/check
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$0.86
Verified settled volume
111 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
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 2026-07-03 22:56Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x64E81E0287FfDF31EB21D0891398899879f1fA6a

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.

Accepts

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

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0x64E8…1fA6a. The signed payment is good for 2 minutes.

Paid to
0x64E8…1fA6a
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x64E81E0287FfDF31EB21D0891398899879f1fA6a",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "package": "lodash",
          "version": "4.17.15",
          "ecosystem": "npm"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "vulns": [
            {
              "id": "GHSA-p6mc-m468-83gw",
              "summary": "Prototype pollution in lodash",
              "severity": "HIGH"
            }
          ],
          "package": "lodash",
          "vuln_count": 2
        }
      }
    },
    "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",
              "required": [
                "package",
                "ecosystem"
              ],
              "properties": {
                "package": {
                  "type": "string",
                  "description": "Package name as registered in the ecosystem (npm: lodash / PyPI: requests / Maven: org.apache.logging.log4j:log4j-core)"
                },
                "version": {
                  "type": "string",
                  "description": "Optional exact version to check"
                },
                "ecosystem": {
                  "type": "string",
                  "description": "npm | PyPI | Go | Maven | crates.io | RubyGems | NuGet | Packagist"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-03 22:56Z
Last indexed by Roundhouse
2026-07-25 00:00Z
Last enriched (probe, favicon, geo)
2026-09-14 06:15Z
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 data.japanagent.dev 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=data.japanagent.dev'
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://data.japanagent.dev/vuln/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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

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