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EU E-Invoice Generator (UBL 2.1)
x402
EU E-Invoice Generator (UBL 2.1) is a paid API for AI agents from api.wsystem.dev, paid per call via x402, $0.08/call, status unknown (last checked 2026-10-30).
Converts simple JSON invoice data into a validated EU e-invoice in UBL 2.1 format (EN 16931, XRechnung, or Peppol BIS 3), with auto-computed totals and VAT breakdown
Price / call$0.08
Success—
StatusUnknown
How this service works
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
Output
A validated UBL 2.1 XML e-invoice document in the requested format (EN 16931, XRechnung, or Peppol BIS 3), with all line items, automatically computed subtotals, per-rate VAT breakdown, and grand total included and conformant to EU e-invoicing standards.
Example use cases
German B2B XRechnung compliance
“Generate an XRechnung invoice numbered XR-2024-001, dated today, from my company TechSoft GmbH (VAT DE811234567, Musterstraße 1, Berlin) to client Bundesamt für Steuern (VAT DE123789456), for 20 hours of IT consulting at €95 per hour with 19% VAT.”
Cross-border Peppol invoice for EU supplier
“Create a Peppol BIS 3 e-invoice, invoice number PEP-881, issued on 2024-07-15, from seller Rossi Forniture SRL (VAT IT12345678901, Milan) to buyer Müller Handel GmbH (VAT DE876543210, Hamburg), for 50 units of industrial components at €42 each at 22% VAT and 10 units of packaging at €8 each at 10% VAT.”
EN 16931 invoice for EU accounting system
“I need a validated EN 16931 e-invoice, number INV-EU-0099, issued 2024-06-01, from seller Dubois Conseil SARL (VAT FR40303265045, Paris) to buyer Grupo Ibérico SA (VAT ES-A28015865, Madrid), with one line: 3 days of management consulting at €1,200 per day at 20% VAT.”
Technical details
Endpoint
POSThttps://api.wsystem.dev/einvoice/create?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically generate standards-compliant EU e-invoices (EN 16931, XRechnung for German public sector, or Peppol BIS 3 for pan-European B2B) with automatic VAT computation from simple JSON — especially in agentic workflows where invoice generation must be fully automated without manual XML authoring. Ideal when the invoicing party is EU-based or must comply with EU e-invoicing mandates.
Side effects
- Invalid or missing VAT numbers for seller/buyer causing validation failure
- Unsupported format value outside the allowed enum (en16931, xrechnung, peppol-bis3)
- Missing required fields such as seller, buyer, lines, invoice_number, or issue_date
- Malformed issue_date format causing parsing error
- Empty or zero-value line items causing computation errors
- Payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| buyer | object | |
| lines | array | |
| format | string | |
| seller | object | |
| issue_date | string | |
| invoice_number | string |
Tags
x402
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