io.github.cmendezs/mcp-fattura-elettronica-it

Official

by cmendezs · Python

Fattura Elettronica IT

Italian e-invoicing: FatturaPA XML/SDI v1.2.3, 42 tools. Signing, SDI, archiving.

Handles Italian e-invoicing with FatturaPA XML signing and SDI archiving.

Topics

agenzia-delle-entratee-invoicingfattura-elettronicafatturapaitalymcpmcp-serversdi

README.md14 KBView on GitHub

mcp-fattura-elettronica-it 🇮🇹

English | Italiano

A Python MCP server for Italian electronic invoicing in FatturaPA XML format (SDI / Agenzia delle Entrate standard, version 1.2.3). 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 42 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 (v1.2.3), XML generation, parsing, JSON export, SDI filename generation, withholding tax (ritenuta d'acconto) calculation, digital signatures (XAdES-BES and CAdES-BES), direct SDI transmission via SDICoop SOAP, SDI notification parsing, and conservazione sostitutiva (legally compliant archiving per AgID). Licensed under Apache 2.0.

🚀 Installation

Via PyPI (recommended)

bash

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:

bash

uvx mcp-fattura-elettronica-it

From source

bash

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

⚙️ Configuration

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_v1.2.3.xsd`
`SDI_ENVIRONMENT`	SDI environment: `test` or `production`	`test`
`SDI_CERT_PATH`	Path to the PKCS#12 mTLS certificate for SDI	(none)
`SDI_CERT_PASSWORD`	Passphrase for the PKCS#12 file	(none)
`SDI_ENDPOINT_URL`	SDICoop endpoint URL override	(auto from environment)
`SDI_CHANNEL_ID`	Channel ID assigned during AdE accreditation	(none)
`EINVOICING_SIGNER_SOCKET`	Unix socket for the signer microservice	(none)
`EINVOICING_SIGNER_TOKEN`	Auth token for the signer microservice	(none)
`CONSERVAZIONE_STORAGE_PATH`	Local archive storage path (dev only)	`.conservazione/`

🤖 Claude Desktop integration

Add the following to your claude_desktop_config.json file:

json

{
  "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):

json

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

🪐 Kiro integration

json

{
  "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 v1.2.3
`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

Simplified invoices: FatturaSemplificata VFSM10 (3 tools)

Tool	Description
`generate_fattura_semplificata`	Generate a simplified invoice XML (TD07/TD08/TD09) using VFSM10 format
`validate_fattura_semplificata_xsd`	Validate a simplified invoice XML against the VFSM10 XSD v1.0.2
`parse_fattura_semplificata_xml`	Parse a simplified invoice XML into a structured dict

Simplified invoices (art. 21-bis DPR 633/72) are valid for transactions up to EUR 400 (tax-inclusive). They use a flatter structure than ordinary FatturaPA: no per-line VAT breakdown, no DatiRiepilogo. Each DatiBeniServizi entry carries its own Descrizione, Importo, and DatiIVA. The VFSM10 format uses namespace v1.0 and is separate from the EN 16931 CIUS used by ordinary invoices.

Digital signatures (2 tools)

Tool	Description
`sign_fattura_xades`	Apply XAdES-BES enveloped XML signature (.xml). Requires PKCS#12 cert.
`sign_fattura_cades`	Apply CAdES-BES CMS/PKCS#7 attached signature (.xml.p7m). Requires PKCS#12 cert.

Both signature formats are accepted by SDI (Specifiche tecniche SDI v1.8.4, section 2.1). Supports dual mode: signer microservice (keeps keys out of the MCP process) or direct PKCS#12 loading. Requires cryptography>=42.0.0 (installed via the [xml-sign] extra on mcp-einvoicing-core).

SDI integration (5 tools)

Tool	Description
`submit_to_sdi`	Submit a signed invoice to SDI via SDICoop SOAP (mTLS)
`check_sdi_status`	Check submission status by IdentificativoSDI
`parse_sdi_notification`	Parse SDI notification XML (RC/NS/MC/NE/EC/SE/DT/MT/AT)
`send_esito_committente`	Send acceptance (EC01) or rejection (EC02) to SDI
`get_sdi_channel_info`	Show current SDI channel configuration

Requires AdE accreditation for production use. Configure via SDI_CERT_PATH, SDI_CERT_PASSWORD, SDI_ENVIRONMENT (test/production), and SDI_ENDPOINT_URL (override) environment variables.

Conservazione sostitutiva / archiving (5 tools)

Tool	Description
`archive_invoice`	Archive a signed invoice with SHA-256 hash and 10-year retention
`retrieve_archived_invoice`	Retrieve an archived document by ID
`verify_archive_integrity`	Verify SHA-256 hash integrity of an archived document
`list_archived_invoices`	List all archived invoices
`build_pacchetto_versamento`	Build a PdV ZIP archive for transfer to an AgID-accredited conservator

Per AgID circolare 65/2014 and DM 17/06/2014, electronic invoices must be archived for a minimum of 10 years. The local filesystem backend is for development only; production requires integration with an AgID-accredited conservazione provider.

Usage examples

Example 1: Generate a complete B2B invoice

code

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

code

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

code

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

code

mcp-fattura-elettronica-it (this package, standalone MCP server)
├── ItalyPartyValidator(BasePartyValidator)   ← Partita IVA modulo-10
├── FatturaGenerator(BaseDocumentGenerator)   ← FatturaPA XML v1.2.3
├── FatturaValidator(BaseDocumentValidator)   ← lxml XSD v1.2.3
└── 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 v1.2.3	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

bash

# 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	XML generation, XSD validation, parsing, 21 MCP tools, withholding tax
v0.2.0	Simplified invoices (TD07/TD08/TD09), FPA12 batch invoicing, Codice Fiscale validation, VAT rate warnings, 30 MCP tools
v0.3.0	SdI lifecycle scope boundary documented, transmission field defaults removed
v0.5.0 (current)	XAdES-BES and CAdES-BES digital signatures, direct SDI integration (SDICoop SOAP), conservazione sostitutiva (AgID archiving), 42 MCP tools
v0.6.0	SFTP channel, AgID-accredited provider API integration

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.

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

Install

Configuration

Environment variables

FATTURA_XSD_PATH

Path to a local copy of the FatturaPA XSD schema file (optional — built-in schema is used if unset)

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-fattura-elettronica-it": {
      "command": "uvx",
      "args": [
        "mcp-fattura-elettronica-it"
      ],
      "env": {
        "FATTURA_XSD_PATH": "<YOUR_FATTURA_XSD_PATH>"
      }
    }
  }
}