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mcp-fattura-elettronica-it

mcp-fattura-elettronica-it 🇮🇹

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License PyPI version Python mcp-fattura-elettronica-it MCP server

A Python MCP server for Italian electronic invoicing in FatturaPA XML format (SDI / Agenzia delle Entrate standard, version 1.6.1). It enables AI agents (Claude, IDEs) to generate, validate, and analyze B2B, B2G, and cross-border electronic invoices that are directly compliant with the technical specifications of the Sistema di Interscambio (SDI).

This is a Model Context Protocol (MCP) server exposing 21 tools covering the full lifecycle of a FatturaPA XML document: transmission header construction, seller/buyer validation, document type codes (TD01-TD28), line items, VAT summary computation, payment terms, XSD validation against the official Agenzia delle Entrate schema (v1.6.1), XML generation, parsing, JSON export, SDI filename generation, and withholding tax (ritenuta d'acconto) calculation. The server requires no external API calls, as all logic runs locally. Licensed under Apache 2.0.


🚀 Installation

pip install mcp-fattura-elettronica-it

mcp-einvoicing-core is installed automatically as a dependency. lxml is also required and included, so no extra steps are needed.

Without prior installation, using uvx:

uvx mcp-fattura-elettronica-it

From source

git clone https://github.com/cmendezs/mcp-fattura-elettronica-it.git
cd mcp-fattura-elettronica-it

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

pip install -e ".[dev]"
cp .env.example .env

Related MCP server: mcp-facture-electronique-fr

⚙️ Configuration

The server does not require external credentials in v0.1.0. The available environment variables are:

Variable

Description

Default

LOG_LEVEL

Log level (DEBUG, INFO, WARNING, ERROR)

INFO

FATTURA_XSD_PATH

Path to the FatturaPA XSD file

schemas/FatturaPA_v1.6.1.xsd

🤖 Claude Desktop integration

Add the following to your claude_desktop_config.json file:

{
  "mcpServers": {
    "fattura-elettronica-it": {
      "command": "uvx",
      "args": ["mcp-fattura-elettronica-it"]
    }
  }
}

⌨️ Cursor integration

Configuration file (~/.cursor/mcp.json or .cursor/mcp.json in the project folder):

{
  "mcpServers": {
    "fattura-elettronica-it": {
      "command": "uvx",
      "args": ["mcp-fattura-elettronica-it"]
    }
  }
}

🪐 Kiro integration

{
  "mcpServers": {
    "fattura-elettronica-it": {
      "command": "uvx",
      "args": ["mcp-fattura-elettronica-it"],
      "disabled": false,
      "autoApprove": []
    }
  }
}

🧰 Available MCP tools

Header: FatturaElettronicaHeader (7 tools)

Tool

Description

build_transmission_header

Build DatiTrasmissione block: ProgressivoInvio, CodiceDestinatario, PECDestinatario

validate_cedente_prestatore

Validate seller block: IdFiscaleIVA, Anagrafica, Sede, RegimeFiscale codes

validate_cessionario

Validate buyer block: IdFiscaleIVA or CodiceFiscale, Sede

get_regime_fiscale_codes

Return all valid RegimeFiscale codes with descriptions (RF01-RF19)

validate_partita_iva

Validate Italian VAT number (Partita IVA) format and checksum (11 digits)

generate_progressivo_invio

Generate a unique ProgressivoInvio identifier (max 10 alphanumeric chars)

lookup_codice_destinatario

Return info about a CodiceDestinatario (6-char SDI code) or PEC address

Body: FatturaElettronicaBody (7 tools)

Tool

Description

build_dati_generali

Build DatiGenerali block: TipoDocumento, Divisa, Data, Numero, Causale

get_tipo_documento_codes

Return all TD01-TD28 codes with descriptions and use cases (incl. cross-border)

add_linea_dettaglio

Add a DettaglioLinee entry: NumeroLinea, Descrizione, Quantita, PrezzoUnitario

compute_totali

Compute DatiRiepilogo: imponibile, imposta, AliquotaIVA from line items

get_natura_codes

Return all Natura codes (N1-N7 and sub-codes) for VAT exemption with legal references

build_dati_pagamento

Build DatiPagamento: CondizioniPagamento (TP01/02/03), ModalitaPagamento (MP01-MP23)

add_allegato

Attach a base64-encoded document to the Allegati block with name and format

Global: generation and validation (7 tools)

Tool

Description

generate_fattura_xml

Generate a complete FatturaPA XML file from structured input data

validate_fattura_xsd

Validate a FatturaPA XML string against the official XSD schema v1.6.1

parse_fattura_xml

Parse an existing FatturaPA XML string and return a structured JSON dict

export_to_json

Export a parsed FatturaPA structure to clean JSON format

validate_partita_iva_format

Validate Partita IVA format and Luhn-like checksum (11-digit Italian VAT)

get_sdi_filename

Generate the official SDI filename: IT{PartitaIVA}_{ProgressivoInvio}.xml

check_ritenuta_acconto

Check and compute ritenuta d'acconto (withholding tax) for professional invoices


Usage examples

Example 1: Generate a complete B2B invoice

1. validate_partita_iva_format("01234567897")
   → { "valid": true }

2. generate_progressivo_invio(sequence=1)
   → { "progressivo_invio": "00001" }

3. build_transmission_header(id_paese="IT", id_codice="01234567897",
     progressivo_invio="00001", formato_trasmissione="FPR12",
     codice_destinatario="ABC123")

4. validate_cedente_prestatore(id_paese="IT", id_codice="01234567897",
     denominazione="ACME Srl", regime_fiscale="RF01",
     indirizzo="Via Roma 1", cap="00100", comune="Roma", nazione="IT")

5. validate_cessionario(denominazione="Buyer Srl",
     id_paese="IT", id_codice="98765432109",
     indirizzo="Via Verdi 2", cap="20100", comune="Milano")

6. build_dati_generali(tipo_documento="TD01", data="2026-01-15",
     numero="2026/001", divisa="EUR")

7. add_linea_dettaglio(numero_linea=1, descrizione="Consulenza informatica",
     quantita=8, unita_misura="ORE", prezzo_unitario=100.0,
     prezzo_totale=800.0, aliquota_iva=22.0)

8. compute_totali(linee=[{"prezzo_totale": 800.0, "aliquota_iva": 22.0}])
   → { "totale_fattura": "976.00" }

9. build_dati_pagamento(condizioni_pagamento="TP02", modalita_pagamento="MP05",
     importo_pagamento=976.0, iban="IT60X0542811101000000123456")

10. generate_fattura_xml(...all previous blocks...)
    → { "xml": "<?xml ...", "filename": "IT01234567897_00001.xml" }

11. validate_fattura_xsd(xml_string=...)
    → { "valid": true }

Example 2: Professional invoice with withholding tax

check_ritenuta_acconto(imponibile=1000.0, tipo_ritenuta="RT02",
  causale_pagamento="A")
→ {
    "DatiRitenuta": {
      "TipoRitenuta": "RT02",
      "ImportoRitenuta": "200.00",
      "AliquotaRitenuta": "20.00",
      "CausalePagamento": "A"
    },
    "importo_ritenuta": "200.00"
  }

Example 3: Look up VAT exemption codes

get_natura_codes()
→ codes: [
    { "code": "N3.1", "description": "Non imponibili — esportazioni",
      "legal_ref": "Art. 8 DPR 633/72" },
    { "code": "N6.1", "description": "Inversione contabile — rottami",
      "legal_ref": "Art. 74 c. 7-8 DPR 633/72" },
    ...
  ]

Architecture

mcp-fattura-elettronica-it (this package, standalone MCP server)
├── ItalyPartyValidator(BasePartyValidator)   ← Partita IVA modulo-10
├── FatturaGenerator(BaseDocumentGenerator)   ← FatturaPA XML v1.6.1
├── FatturaValidator(BaseDocumentValidator)   ← lxml XSD v1.6.1
└── FatturaParser(BaseDocumentParser)         ← lxml xpath

        ↑ extends
mcp-einvoicing-core (shared foundation, installed as dependency)
├── BaseDocumentGenerator / Validator / Parser / PartyValidator
├── InvoiceDocument, InvoiceParty, InvoiceLineItem … (Pydantic)
├── xml_utils, logging_utils, exceptions
└── EInvoicingMCPServer (optional multi-country aggregator)

📚 Reference standards

Resource

Link

FatturaPA specifications

fatturapa.gov.it

Official XSD v1.6.1

Schema v1.2.2, Agenzia delle Entrate

XML namespace

http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2

SDI, Sistema di Interscambio

Agenzia delle Entrate

Withholding tax (ritenuta d'acconto)

Art. 25 DPR 600/73, Modello 770


🧪 Tests

# Install development dependencies
pip install -e ".[dev]"

# Run all tests
pytest tests/ -v

# Run only MCP integration tests
pytest tests/test_mcp_integration.py -v

Roadmap

Version

Features

v0.1.0 (current)

XML generation, XSD validation, parsing, 21 MCP tools, withholding tax

v0.2

CAdES-BES and XAdES digital signatures (smart card, HSM, P12)

v0.3

Direct SDI integration via SDICoop SOAP and SFTP, sending and receiving

v0.4

Simplified invoice (TD07/TD08/TD09), amounts up to 400 EUR

v0.5

Legally compliant archiving, integration with AgID-accredited providers


Other e-invoicing MCP servers

Country

Server

🌍 Global

mcp-einvoicing-core

🇧🇪 Belgium

mcp-einvoicing-be

🇧🇷 Brazil

mcp-nfe-br

🇫🇷 France

mcp-facture-electronique-fr

🇩🇪 Germany

mcp-einvoicing-de

🇮🇹 Italy

mcp-fattura-elettronica-it

🇵🇱 Poland

mcp-ksef-pl

🇪🇸 Spain

mcp-facturacion-electronica-es


📄 License

This project is distributed under the Apache 2.0 license. See the LICENSE file for full details.

Copyright 2026 cmendezs


Project maintained by cmendezs. For questions about the FatturaPA standard implementation, please open an Issue.

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