Checks a German invoice (Rechnung) for the ten mandatory details of § 14 (4) USt
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.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.ozdreamtools.de/api/invoice/check
| Category | Everything else |
|---|---|
| Provider host | api.ozdreamtools.de |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.1 | 17 ms |
Example input (from the provider)
{
"body": {
"text": "Muster GmbH, Musterstr. 1, 65812 Bad Soden \u00b7 Rechnung Nr. 2026-014 vom 23.07.2026 \u00b7 Leistungsempf\u00e4nger: Beispiel AG, Beispielweg 2, 60313 Frankfurt \u00b7 Leistungsdatum: 20.07.2026 \u00b7 3 Std. Beratung \u00b7 Netto 300,00 EUR \u00b7 19% USt 57,00 EUR \u00b7 Gesamt 357,00 EUR \u00b7 USt-IdNr: DE123456789"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"text": {
"description": "Invoice text, HTML or XML of an invoice",
"type": "string"
}
},
"required": [
"text"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}