Oxygen Peppol APIComplete Invoicing Solution

Quick Example ​

Create your first invoice in minutes:

curl -X POST https://api.oxygen-peppol.com/api/v1/invoices \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "INV-2024-001|2024-01-15|380|1.2",
    "issue_date": "2024-01-15",
    "invoice_type_code": 380,
    "currency_code": "EUR",
    "seller": {
      "endpoint_id": "9999:DE123456789",
      "legal_entity": {
        "registration_name": "Acme Corp"
      },
      "address": {
        "country": "DE"
      }
    },
    "buyer": {
      "endpoint_id": "9999:FR987654321",
      "legal_entity": {
        "registration_name": "Client SA"
      },
      "address": {
        "country": "FR"
      }
    },
    "lines": [...],
    "totals": {...}
  }'

Key Features ​

Multiple Invoice Types ​

• Standard Invoices (380): Regular commercial invoices
• Credit Notes (381): Refunds and corrections

Compliance Built-in ​

• ✅ UBL 2.1 format
• ✅ Peppol BIS Billing 3.0
• ✅ EN 16931 European Standard
• ✅ Greek myDATA integration
• ✅ Automatic schematron validation

Developer Friendly ​

• RESTful API design
• Comprehensive error messages
• Detailed validation feedback
• Multiple code examples (cURL, PHP, Python, JavaScript)
• Webhook support for event-driven workflows

Regional Support ​

International Sellers ​

Perfect for businesses sending cross-border invoices within the Peppol network. Supports all Peppol participant countries.

Greek Sellers ​

Specialized features for Greek businesses:

• myDATA (AADE) integration
• MARK and AUTHCODE handling
• KED (Κέντρο Διαλειτουργικότητας) compliance
• Project reference (ΑΔΑ) support
• Withholding tax (παρακράτηση φόρου) support
• Soft reject handling

Next Steps ​