Create a validated EU e-invoice (UBL 2.1
Create a validated EU e-invoice (UBL 2.1: EN 16931, XRechnung or Peppol BIS 3 structure) from simple JSON; totals and VAT breakdown computed
Answeringour last check, 2026-10-20
1 of 1checks answered this week
345 msmedian answer time
$0.08listed price per call
$0.08price it asked us
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.wsystem.dev/einvoice/create
| Category | Everything else |
|---|---|
| Provider host | api.wsystem.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.08 | 345 ms |
Example input (from the provider)
{
"body": {
"buyer": {
"city": "Muenchen",
"country": "DE",
"email": "ap@kunde.de",
"name": "Kunde AG",
"postal_code": "80331"
},
"buyer_reference": "04011000-12345-34",
"format": "xrechnung",
"invoice_number": "INV-1001",
"issue_date": "2026-10-18",
"lines": [
{
"description": "Consulting",
"quantity": 10,
"unit_price": 95.5,
"vat_rate": 19
}
],
"payment": {
"iban": "DE89370400440532013000"
},
"seller": {
"city": "Berlin",
"contact_name": "Anna",
"country": "DE",
"email": "b@muster.de",
"name": "Muster GmbH",
"phone": "+49301234",
"postal_code": "10115",
"vat_id": "DE123456789"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"buyer": {
"type": "object"
},
"format": {
"enum": [
"en16931",
"xrechnung",
"peppol-bis3"
],
"type": "string"
},
"invoice_number": {
"type": "string"
},
"issue_date": {
"type": "string"
},
"lines": {
"type": "array"
},
"seller": {
"type": "object"
}
},
"required": [
"invoice_number",
"issue_date",
"seller",
"buyer",
"lines"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"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"
}