mcp-einvoicing-de (dieses Paket — eigenständiger MCP-Server)
├── ZUGFeRDInvoice / XRechnungInvoice  ← Pydantic-Modelle (alle Profile)
├── SchematronValidator                ← EN 16931 + KoSIT BR-DE-* Regeln
├── KoSITValidator                     ← Remote-Validierungstool (optional)
└── Tools: create / validate / parse / convert / peppol_check / tax_rules

        ↑ erweitert
mcp-einvoicing-core (gemeinsame Basis, als Abhängigkeit installiert)
├── BaseDocumentGenerator / Validator / Parser
├── BaseInvoice, BaseParty … (Pydantic)
├── xml_utils, exceptions
└── EInvoicingMCPServer

pip install mcp-einvoicing-de

uvx mcp-einvoicing-de

git clone https://github.com/cmendezs/mcp-einvoicing-de.git
cd mcp-einvoicing-de

python -m venv .venv
source .venv/bin/activate   # Windows: .venv\Scripts\activate

pip install -e ".[dev]"

{
  "mcpServers": {
    "einvoicing-de": {
      "command": "uvx",
      "args": ["mcp-einvoicing-de"]
    }
  }
}

{
  "mcpServers": {
    "einvoicing-de": {
      "command": "uvx",
      "args": ["mcp-einvoicing-de"]
    }
  }
}

{
  "mcpServers": {
    "einvoicing-de": {
      "command": "uvx",
      "args": ["mcp-einvoicing-de"],
      "disabled": false,
      "autoApprove": []
    }
  }
}

1. invoice_validate(
     xml_base64="...",   # Base64-kodiertes ZUGFeRD-XML
     strict=True
   )
   → {
       "is_valid": true,
       "profile": "EN_16931",
       "syntax": "CII",
       "error_count": 0,
       "warning_count": 2,
       "errors": [],
       "warnings": [...],
       "validator_used": "local_schematron"
     }

2. tax_rules(query="reverse_charge", context="Bauleistungen")
   → {
       "results": [
         {
           "paragraph": "§13b Abs. 2 Nr. 5 UStG",
           "description_en": "Construction services (building contractor rule)",
           "vatex_code": "VATEX-EU-AE",
           "invoice_note": "Steuerschuldnerschaft des Leistungsempfängers (§13b UStG)"
         }
       ],
       "legal_disclaimer": "..."
     }

3. peppol_check(
     participant_id="0204:991-1234512345-06",
     environment="production"
   )
   → {
       "is_registered": true,
       "participant_id": "0204:991-1234512345-06",
       "document_type_supported": true,
       "access_point_url": "https://ap.example.de/as4",
       "transport_profile": "peppol-transport-as4-v2.0"
     }

4. invoice_parse(xml_base64="...", include_raw_xml=False)
   → {
       "profile": "XRECHNUNG",
       "syntax": "CII",
       "invoice_number": "RE-2025-001",
       "invoice_date": "2025-01-15",
       "seller_name": "Muster GmbH",
       "buyer_name": "Käufer AG",
       "tax_inclusive_amount": "119.00",
       "currency_code": "EUR"
     }

# Entwicklungsabhängigkeiten installieren
pip install -e ".[dev]"

# Gesamte Testsuite ausführen
pytest tests/ -v

# Mit Abdeckungsbericht
pytest --cov=mcp_einvoicing_de --cov-report=term-missing

# Nur Modell-Tests
pytest tests/test_models.py -v

git clone https://github.com/cmendezs/mcp-einvoicing-de.git
cd mcp-einvoicing-de
pip install -e ".[dev]"
pytest
make audit