Roundhouse AI

api.ozdreamtools.de

Checks a German invoice (Rechnung) for the ten mandatory details of § 14 (4) UStG, the German VAT act, from caller-supplied invoice text. If a total up to 250 EUR is detectable, the small-amount simplifications (Kleinbetragsrechnung, § 33 UStDV) apply and dispensable details come back as not_applicable, not as a defect. Also states whether a structured e-invoice format (XRechnung/CII, UBL, ZUGFeRD) is present: a format finding only, no claim about any duty or deadline. No tax advice.

OtherLiveeip155:8453Exactvia cdp
https://api.ozdreamtools.de/api/invoice/check
ComplianceInvoiceRechnungUstgE-invoice
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 11 snapshots so far.
$3.08
Verified settled volume
88 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
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 2026-09-16 15:39Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4Dd5E59475A55f1C2c0816469600663cb74cC1Dc

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.

0.1USDC≈ $0.1 USD
on Base · exact scheme

Pay 0.1 USDC on Base to 0x4Dd5…cC1Dc. The signed payment is good for 5 minutes.

Paid to
0x4Dd5…cC1Dc
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
100000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x4Dd5E59475A55f1C2c0816469600663cb74cC1Dc",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "text": "Muster GmbH, Musterstr. 1, 65812 Bad Soden · Rechnung Nr. 2026-014 vom 23.07.2026 · Leistungsempfänger: Beispiel AG, Beispielweg 2, 60313 Frankfurt · Leistungsdatum: 20.07.2026 · 3 Std. Beratung · Netto 300,00 EUR · 19% USt 57,00 EUR · Gesamt 357,00 EUR · USt-IdNr: DE123456789"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "items": [
            {
              "key": "name_address",
              "ustg": "§ 14 Abs. 4 Nr. 1",
              "facts": {},
              "status": "ok",
              "conditional": false
            }
          ],
          "score": {
            "max": 16,
            "hint": "…",
            "points": 16
          },
          "e_invoice": {
            "note": "…",
            "format_detected": "no_structured_format"
          },
          "checked_at": "2026-07-23T09:00:00.000Z",
          "legal_basis": {
            "note": "…",
            "sources": [
              "https://www.gesetze-im-internet.de/ustg_1980/__14.html"
            ]
          },
          "not_decidable": [],
          "not_applicable": [
            "credit_note"
          ],
          "small_amount_invoice": {
            "note": "…",
            "detected": false,
            "amount_eur": 357
          }
        }
      }
    },
    "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": {
              "required": [
                "text"
              ],
              "properties": {
                "text": {
                  "type": "string",
                  "description": "Invoice text, HTML or XML of an invoice"
                }
              }
            },
            "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
2026-09-16 15:39Z
Last indexed by Roundhouse
2026-09-25 17:00Z
Last enriched (probe, favicon, geo)
2026-09-25 15:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
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. 11 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 api.ozdreamtools.de 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=api.ozdreamtools.de'
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.ozdreamtools.de/api/invoice/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.