Payment Allocation Audit

Check that payment allocations are arithmetically consistent with the invoices and payments they refer to. An over-allocated invoice and an over-allocated payment are reported separately because they are different events: money applied beyond what was owed, and money applied that was never received. Also reports an unallocated remainder, an allocation to a cancelled invoice, and a cross-currency allocation, which converts at a rate the data does not state.

SearchLiveeip155:8453Exactvia cdp
Accounts receivableCash applicationExact arithmeticFinance operationsDeveloper tooling
Settlements · 30d
218↓ 56%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$25.30
Verified settled volume
255 settlements proven x402 by their on-chain EIP-3009 marker.
$0.180
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 2026-10-04 08:38Z
—
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.

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": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "180000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/payment-allocation-audit",
    "tags": [
      "accounts receivable",
      "cash application",
      "exact arithmetic",
      "finance operations",
      "developer tooling"
    ],
    "mimeType": "application/json",
    "description": "Check that payment allocations are arithmetically consistent with the invoices and payments they refer to. An over-allocated invoice and an over-allocated payment are reported separately because they are different events: money applied beyond what was owed, and money applied that was never received. Also reports an unallocated remainder, an allocation to a cancelled invoice, and a cross-currency allocation, which converts at a rate the data does not state.",
    "serviceName": "Payment Allocation Audit"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "invoices": [
              {
                "id": "INV-1",
                "amount": "500.00",
                "currency": "AUD"
              },
              {
                "id": "INV-2",
                "amount": "250.00",
                "currency": "AUD"
              },
              {
                "id": "INV-3",
                "amount": "100.00",
                "status": "cancelled",
                "currency": "USD"
              }
            ],
            "payments": [
              {
                "id": "PAY-1",
                "amount": "600.00",
                "currency": "AUD"
              },
              {
                "id": "PAY-2",
                "amount": "100.00",
                "currency": "AUD"
              }
            ],
            "allocations": [
              {
                "amount": "500.01",
                "invoice": "INV-1",
                "payment": "PAY-1"
              },
              {
                "amount": "50.00",
                "invoice": "INV-2",
                "payment": "PAY-1"
              },
              {
                "amount": "100.00",
                "invoice": "INV-3",
                "payment": "PAY-2"
              },
              {
                "amount": "0",
                "invoice": "INV-9",
                "payment": "PAY-2"
              }
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "limits": {
              "maxEntries": 20000,
              "maxAccounts": 5000,
              "maxFindings": 500,
              "maxLinesPerEntry": 500,
              "maxStatementLines": 20000
            },
            "passed": false,
            "complete": true,
            "findings": [
              {
                "code": "CURRENCY_MISMATCH",
                "detail": "Allocation 3 applies a AUD payment to a USD invoice. That is a conversion at a rate this data does not state.",
                "invoice": "INV-3",
                "payment": "PAY-2"
              },
              {
                "code": "ALLOCATION_TO_UNPAYABLE_INVOICE",
                "detail": "Allocation 3 applies 100 to invoice INV-3, whose status is cancelled. Money applied to an invoice in that state is in no receivable figure.",
                "invoice": "INV-3",
                "payment": "PAY-2"
              },
              {
                "code": "ALLOCATION_TO_UNKNOWN_INVOICE",
                "detail": "Allocation 4 applies 0 to invoice INV-9, which is not in the set supplied.",
                "invoice": "INV-9",
                "payment": "PAY-2"
              }
            ],
            "invoices": [
              {
                "amount": "500",
                "status": null,
                "invoice": "INV-1",
                "currency": "AUD",
                "allocated": "500.01",
                "outstanding": "-0.01"
              },
              {
                "amount": "250",
                "status": null,
                "invoice": "INV-2",
                "currency": "AUD",
                "allocated": "50",
                "outstanding": "200"
              },
              {
                "amount": "100",
                "status": "cancelled",
                "invoice": "INV-3",
                "currency": "USD",
                "allocated": "100",
                "outstanding": "0"
              }
            ],
            "payments": [
              {
                "amount": "600",
                "payment": "PAY-1",
                "currency": "AUD",
                "allocated": "550.01",
                "unallocated": "49.99"
              },
              {
                "amount": "100",
                "payment": "PAY-2",
                "currency": "AUD",
                "allocated": "100",
                "unallocated": "0"
              }
            ],
            "reconciled": false,
            "request_id": "example-request",
            "service_id": "payment_allocation_audit",
            "assumptions": [
              "Every total is exact, so an over-allocation of one cent is reported as one cent rather than disappearing into a rounding comparison.",
              "An over-allocated invoice and an over-allocated payment are separate findings, because they are different events: one is money applied beyond what was owed and the other is money applied that was neve...",
              "A cross-currency allocation is reported as a conversion at a rate the data does not state, rather than being converted on an assumption."
            ],
            "limitations": [
              "Whether the allocations supplied are arithmetically consistent with the invoices and payments supplied. Not an audit opinion and not accounting advice: whether a payment was genuinely received, or an ...",
              "reconciled is true only when every allocation resolved, no total was exceeded, and nothing was left sitting unallocated."
            ],
            "observed_at": "2026-10-02T00:00:00.000Z",
            "not_examined": [],
            "finding_count": 6,
            "invoice_count": 3,
            "payment_count": 2,
            "total_invoiced": "850",
            "total_received": "700",
            "service_version": "1.0.0",
            "total_allocated": "650.01",
            "findings_by_code": {
              "CURRENCY_MISMATCH": 1,
              "INVOICE_OVER_ALLOCATED": 1,
              "ALLOCATION_MOVES_NOTHING": 1,
              "PAYMENT_PARTLY_UNALLOCATED": 1,
              "ALLOCATION_TO_UNKNOWN_INVOICE": 1,
              "ALLOCATION_TO_UNPAYABLE_INVOICE": 1
            },
            "total_outstanding": "199.99"
          }
        }
      },
      "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": [
                  "invoices",
                  "payments",
                  "allocations"
                ],
                "properties": {
                  "invoices": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "id",
                        "amount"
                      ],
                      "properties": {
                        "id": {
                          "type": "string",
                          "maxLength": 128
                        },
                        "amount": {
                          "type": [
                            "string",
                            "number"
                          ]
                        },
                        "status": {
                          "type": "string",
                          "maxLength": 32
                        },
                        "currency": {
                          "type": "string",
                          "maxLength": 8
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 20000,
                    "minItems": 1
                  },
                  "payments": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "id",
                        "amount"
                      ],
                      "properties": {
                        "id": {
                          "type": "string",
                          "maxLength": 128
                        },
                        "amount": {
                          "type": [
                            "string",
                            "number"
                          ]
                        },
                        "currency": {
                          "type": "string",
                          "maxLength": 8
                        },
                        "received_on": {
                          "type": "string",
                          "maxLength": 32
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 20000,
                    "minItems": 1
                  },
                  "allocations": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "payment",
                        "invoice",
                        "amount"
                      ],
                      "properties": {
                        "amount": {
                          "type": [
                            "string",
                            "number"
                          ]
                        },
                        "invoice": {
                          "type": "string",
                          "maxLength": 128
                        },
                        "payment": {
                          "type": "string",
                          "maxLength": 128
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 20000,
                    "minItems": 1
                  }
                },
                "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"
              }
            }
          }
        }
      }
    }
  },
  "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.

0.18USDC≈ $0.18 USD
on Base · exact scheme

Pay 0.18 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.

USD Coin contract
0x8335…02913
Payment window
1 minute
As published
180000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "180000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "invoices": [
            {
              "id": "INV-1",
              "amount": "500.00",
              "currency": "AUD"
            },
            {
              "id": "INV-2",
              "amount": "250.00",
              "currency": "AUD"
            },
            {
              "id": "INV-3",
              "amount": "100.00",
              "status": "cancelled",
              "currency": "USD"
            }
          ],
          "payments": [
            {
              "id": "PAY-1",
              "amount": "600.00",
              "currency": "AUD"
            },
            {
              "id": "PAY-2",
              "amount": "100.00",
              "currency": "AUD"
            }
          ],
          "allocations": [
            {
              "amount": "500.01",
              "invoice": "INV-1",
              "payment": "PAY-1"
            },
            {
              "amount": "50.00",
              "invoice": "INV-2",
              "payment": "PAY-1"
            },
            {
              "amount": "100.00",
              "invoice": "INV-3",
              "payment": "PAY-2"
            },
            {
              "amount": "0",
              "invoice": "INV-9",
              "payment": "PAY-2"
            }
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "limits": {
            "maxEntries": 20000,
            "maxAccounts": 5000,
            "maxFindings": 500,
            "maxLinesPerEntry": 500,
            "maxStatementLines": 20000
          },
          "passed": false,
          "complete": true,
          "findings": [
            {
              "code": "CURRENCY_MISMATCH",
              "detail": "Allocation 3 applies a AUD payment to a USD invoice. That is a conversion at a rate this data does not state.",
              "invoice": "INV-3",
              "payment": "PAY-2"
            },
            {
              "code": "ALLOCATION_TO_UNPAYABLE_INVOICE",
              "detail": "Allocation 3 applies 100 to invoice INV-3, whose status is cancelled. Money applied to an invoice in that state is in no receivable figure.",
              "invoice": "INV-3",
              "payment": "PAY-2"
            },
            {
              "code": "ALLOCATION_TO_UNKNOWN_INVOICE",
              "detail": "Allocation 4 applies 0 to invoice INV-9, which is not in the set supplied.",
              "invoice": "INV-9",
              "payment": "PAY-2"
            }
          ],
          "invoices": [
            {
              "amount": "500",
              "status": null,
              "invoice": "INV-1",
              "currency": "AUD",
              "allocated": "500.01",
              "outstanding": "-0.01"
            },
            {
              "amount": "250",
              "status": null,
              "invoice": "INV-2",
              "currency": "AUD",
              "allocated": "50",
              "outstanding": "200"
            },
            {
              "amount": "100",
              "status": "cancelled",
              "invoice": "INV-3",
              "currency": "USD",
              "allocated": "100",
              "outstanding": "0"
            }
          ],
          "payments": [
            {
              "amount": "600",
              "payment": "PAY-1",
              "currency": "AUD",
              "allocated": "550.01",
              "unallocated": "49.99"
            },
            {
              "amount": "100",
              "payment": "PAY-2",
              "currency": "AUD",
              "allocated": "100",
              "unallocated": "0"
            }
          ],
          "reconciled": false,
          "request_id": "example-request",
          "service_id": "payment_allocation_audit",
          "assumptions": [
            "Every total is exact, so an over-allocation of one cent is reported as one cent rather than disappearing into a rounding comparison.",
            "An over-allocated invoice and an over-allocated payment are separate findings, because they are different events: one is money applied beyond what was owed and the other is money applied that was neve...",
            "A cross-currency allocation is reported as a conversion at a rate the data does not state, rather than being converted on an assumption."
          ],
          "limitations": [
            "Whether the allocations supplied are arithmetically consistent with the invoices and payments supplied. Not an audit opinion and not accounting advice: whether a payment was genuinely received, or an ...",
            "reconciled is true only when every allocation resolved, no total was exceeded, and nothing was left sitting unallocated."
          ],
          "observed_at": "2026-10-02T00:00:00.000Z",
          "not_examined": [],
          "finding_count": 6,
          "invoice_count": 3,
          "payment_count": 2,
          "total_invoiced": "850",
          "total_received": "700",
          "service_version": "1.0.0",
          "total_allocated": "650.01",
          "findings_by_code": {
            "CURRENCY_MISMATCH": 1,
            "INVOICE_OVER_ALLOCATED": 1,
            "ALLOCATION_MOVES_NOTHING": 1,
            "PAYMENT_PARTLY_UNALLOCATED": 1,
            "ALLOCATION_TO_UNKNOWN_INVOICE": 1,
            "ALLOCATION_TO_UNPAYABLE_INVOICE": 1
          },
          "total_outstanding": "199.99"
        }
      }
    },
    "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": [
                "invoices",
                "payments",
                "allocations"
              ],
              "properties": {
                "invoices": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "id",
                      "amount"
                    ],
                    "properties": {
                      "id": {
                        "type": "string",
                        "maxLength": 128
                      },
                      "amount": {
                        "type": [
                          "string",
                          "number"
                        ]
                      },
                      "status": {
                        "type": "string",
                        "maxLength": 32
                      },
                      "currency": {
                        "type": "string",
                        "maxLength": 8
                      }
                    },
                    "additionalProperties": false
                  },
                  "maxItems": 20000,
                  "minItems": 1
                },
                "payments": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "id",
                      "amount"
                    ],
                    "properties": {
                      "id": {
                        "type": "string",
                        "maxLength": 128
                      },
                      "amount": {
                        "type": [
                          "string",
                          "number"
                        ]
                      },
                      "currency": {
                        "type": "string",
                        "maxLength": 8
                      },
                      "received_on": {
                        "type": "string",
                        "maxLength": 32
                      }
                    },
                    "additionalProperties": false
                  },
                  "maxItems": 20000,
                  "minItems": 1
                },
                "allocations": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "payment",
                      "invoice",
                      "amount"
                    ],
                    "properties": {
                      "amount": {
                        "type": [
                          "string",
                          "number"
                        ]
                      },
                      "invoice": {
                        "type": "string",
                        "maxLength": 128
                      },
                      "payment": {
                        "type": "string",
                        "maxLength": 128
                      }
                    },
                    "additionalProperties": false
                  },
                  "maxItems": 20000,
                  "minItems": 1
                }
              },
              "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
2026-10-04 08:38Z
Last indexed by Roundhouse
2026-10-05 00:20Z
Last enriched (probe, favicon, geo)
2026-10-05 22:16Z
x402 version
2
Max timeout
60s
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 Payment Allocation 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=Payment%20Allocation%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/payment-allocation-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.