Roundhouse

x402 Merchant Audit

Is this merchant safe to depend on? Audits up to ten x402 endpoints in one call and returns a verdict — ready, partially ready or not ready — with the specific blockers. Checks each endpoint serves a payable challenge with well-formed terms and a declared input schema, and adds the cross-endpoint check no single probe can make: whether every endpoint pays the same recipient. Never pays anything.

Otherofflineeip155:8453Exactvia cdp
https://api.zfinia.com/x402/v1/x402-merchant-readiness-audit
x402Merchant auditAgent commerceAssuranceDecision ready
Calls · 30d
2↑ 7.7%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far.
$25.30
Verified settled volume
255 settlements proven x402 by their on-chain EIP-3009 marker.
$0.025
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-13 04:11Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608

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.

0.025USDC≈ $0.025 USD
on Base · exact scheme

Pay 0.025 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.

Paid to
0x25e8…a9608
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
25000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "25000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "endpoints": [
            {
              "url": "https://api.zfinia.com/x402/v1/company-evidence-pack",
              "body": {
                "domain": "stripe.com"
              },
              "method": "POST"
            },
            {
              "url": "https://api.zfinia.com/x402/v1/page-markdown",
              "body": {
                "url": "https://docs.python.org/3/"
              },
              "method": "POST"
            }
          ],
          "expected_pay_to": "0x25e8245f07d5e4873987293dad666afbe56a9608"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "limits": {
            "max_endpoints": 10
          },
          "verdict": "ready",
          "blockers": [],
          "endpoints": [
            {
              "url": "https://api.zfinia.com/x402/v1/company-evidence-pack",
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "method": "POST",
              "pay_to": "0x25e8245f07d5e4873987293dad666afbe56a9608",
              "status": 402,
              "network": "eip155:8453",
              "error_code": null,
              "payable_now": true,
              "price_atomic": "60000",
              "priced_offers": 1,
              "serves_challenge": true,
              "blocking_warnings": [],
              "declares_input_schema": true,
              "declares_output_schema": true
            },
            {
              "url": "https://api.zfinia.com/x402/v1/page-markdown",
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "method": "POST",
              "pay_to": "0x25e8245f07d5e4873987293dad666afbe56a9608",
              "status": 402,
              "network": "eip155:8453",
              "error_code": null,
              "payable_now": true,
              "price_atomic": "6000",
              "priced_offers": 1,
              "serves_challenge": true,
              "blocking_warnings": [],
              "declares_input_schema": true,
              "declares_output_schema": true
            }
          ],
          "request_id": "example-request",
          "service_id": "x402_merchant_readiness_audit",
          "observed_at": "2026-10-02T00:00:00.000Z",
          "payment_sent": false,
          "audited_count": 2,
          "payable_count": 2,
          "distinct_payees": [
            "0x25e8245f07d5e4873987293dad666afbe56a9608"
          ],
          "service_version": "1.0.0"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "endpoints"
              ],
              "properties": {
                "endpoints": {
                  "type": "array",
                  "items": {
                    "oneOf": [
                      {
                        "type": "string",
                        "maxLength": 2048
                      },
                      {
                        "type": "object",
                        "required": [
                          "url"
                        ],
                        "properties": {
                          "url": {
                            "type": "string",
                            "maxLength": 2048
                          },
                          "body": {
                            "type": "object"
                          },
                          "method": {
                            "enum": [
                              "GET",
                              "POST"
                            ],
                            "type": "string"
                          }
                        },
                        "additionalProperties": false
                      }
                    ]
                  },
                  "maxItems": 10,
                  "minItems": 1
                },
                "expected_pay_to": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{40}$"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-13 04:11Z
Last indexed by Roundhouse
2026-10-26 15:00Z
Last enriched (probe, favicon, geo)
2026-10-04 11:16Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 0
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. 21 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 x402 Merchant Audit 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=x402%20Merchant%20Audit'
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://api.zfinia.com/x402/v1/x402-merchant-readiness-audit, 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.