INCOMING DOCUMENTORIGIN EU / PEPPOLFORMAT UBL 2.1DESTINATION SAUDI ARABIATARGET ZATCA PHASE 2

SYNCLIUM // BORDER CONTROL FOR INVOICES

Every invoice
has a border.

Synclium moves it across — UBL 2.1 / PEPPOL, Factur-X CII and ZATCA Phase 2, transpiled through one canonical AST. Deterministic. Stateless. MIT open source.

TRANSLATE AN INVOICE →OPEN TERMINAL

TECHNICAL UTILITY — NOT GOVERNMENT CLEARANCE OR CERTIFICATION

DOC // INV-2026-088SCAN ACTIVE

TAX INVOICE — UBL 2.1

Nordwind Transit Systems GmbH

ID
INV-2026-088

ISSUE
2026-08-23

SELLER VAT
DE314982711

PAYABLE
EUR 1785.00

LINE 1 — Rail power inverter maintenance · S 19.00%

cbc:IDINV-2026-088
cbc:IssueDate2026-08-23
seller.taxIdDE314982711
line[0].taxS · 19.00%
totals.payableEUR 1785.00
profilePEPPOL BIS 3.0

ORIGIN: EU / PEPPOL
FORMAT: UBL 2.1
DESTINATION: SAUDI ARABIA
TARGET: ZATCA PHASE 2

02THE BORDER // PROCESSING CORRIDOR

Six gates. One document. No queues.

INGEST → DETECT → NORMALIZE → VALIDATE → COMPILE → EMIT. Each gate visibly rewrites the document; watch the seal change as it travels.

INGESTroot namespace sniff

DETECTubl · facturx · zatca

NORMALIZEcanonical AST

VALIDATEstructural + rules

COMPILEdeterministic emit

EMITtarget dialect

GATE 1/6 — INGESTraw bytes in · namespace sniffed

UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 → UBL 2.1 → CANONICAL AST → FACTUR-X CII → ZATCA PHASE 2 →

03TRANSLATION // ONE INVOICE, FOUR LANGUAGES

Same meaning. Different representation.

UBL → canonical AST → CII → ZATCA. Semantic values stay pinned while the syntax around them is rewritten. That is the whole product.

FIELD	UBL 2.1	CANONICAL AST	CII	ZATCA
document.id	cbc:ID → INV-2026-088	id: INV-2026-088	ram:ID → INV-2026-088	cbc:ID → INV-2026-088
issue.date	cbc:IssueDate	issueDate	udt:DateTimeString @102	cbc:IssueDate
seller.tax	PartyTaxScheme / CompanyID	seller.taxId	SpecifiedTaxRegistration	CompanyID · 15-digit
line.tax	ClassifiedTaxCategory	taxes[] {code, rate}	ApplicableTradeTax	TaxSubtotal / Category
payable	LegalMonetaryTotal	totals.payableAmount	DuePayableAmount	LegalMonetaryTotal
clearance	ProfileID · CustomizationID	extensions[]	GuidelineParameter	UUID · ICV · PIH

THE ORANGE COLUMN IS THE PRODUCT. EVERYTHING ELSE IS A DIALECT.

04FORMAT TOPOLOGY // WHY POINT-TO-POINT DIES

N formats don't need N × (N − 1) converters.

Six dialects, thirty bespoke mappings — or six adapters into one hub. Toggle the collapse.

CONNECTIONS

N × (N − 1) bespoke mappings. Add a format, touch everything.

05INVOICE PASSPORT // SYNCLIUM TRANSIT RECORD

Cleared to cross.

One document, stamped at every gate. Clearance status stays honest: validated technically, never submitted to any authority.

SYNCLIUM TRANSIT RECORD

Nº 088-2026-EU-SA

DOCUMENT ID: INV-2026-088
ORIGIN: EU / PEPPOL
DESTINATION: SAUDI ARABIA
SOURCE FORMAT: UBL 2.1 · BIS 3.0
TARGET FORMAT: ZATCA PHASE 2
SEMANTIC INTEGRITY: LOSSLESS · 6/6 FIELDS
VALIDATION STATE: STRUCTURE + RULES PASS
CLEARANCE STATUS: NOT SUBMITTED · TECHNICAL ONLY

AWAITING INSPECTION…

06LIVE COMPILER // SOURCE · CORE · TARGET

Watch the machine compile.

Real UBL in, real engine call, real ZATCA out. Telemetry below is measured in your browser against /api/v1 — never invented.

IDLE

SOURCE
DETECT
CANONICAL
VALIDATE
EMIT
TARGET

SOURCE // UBL 2.1

<?xml version="1.0" encoding="UTF-8"?>
<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
         xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
         xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
  <cbc:ID>INV-2026-088</cbc:ID>
  <cbc:IssueDate>2026-08-23</cbc:IssueDate>
  <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
  <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
  <cac:AccountingSupplierParty>
    <cac:Party>
      <cac:PartyName><cbc:Name>Nordwind Transit Systems GmbH</cbc:Name></cac:PartyName>
      <cac:PartyTaxScheme>
        <cbc:CompanyID>DE314982711</cbc:CompanyID>
        <cac:TaxScheme><cbc:ID>VAT</cbc:ID></cac:TaxScheme>
      </cac:PartyTaxScheme>
    </cac:Party>
  </cac:AccountingSupplierParty>
  <cac:AccountingCustomerParty>
    <cac:Party>
      <cac:PartyName><cbc:Name>Europa Rail AG</cbc:Name></cac:PartyName>
    </cac:Party>
  </cac:AccountingCustomerParty>
  <cac:InvoiceLine>
    <cbc:ID>1</cbc:ID>
    <cbc:InvoicedQuantity unitCode="HUR">1</cbc:InvoicedQuantity>
    <cbc:LineExtensionAmount currencyID="EUR">1500.00</cbc:LineExtensionAmount>
    <cac:Item>
      <cbc:Name>Rail power inverter maintenance</cbc:Name>
      <cac:ClassifiedTaxCategory>
        <cbc:ID>S</cbc:ID>
        <cbc:Percent>19.00</cbc:Percent>
        <cac:TaxScheme><cbc:ID>VAT</cbc:ID></cac:TaxScheme>
      </cac:ClassifiedTaxCategory>
    </cac:Item>
  </cac:InvoiceLine>
  <cac:LegalMonetaryTotal>
    <cbc:LineExtensionAmount currencyID="EUR">1500.00</cbc:LineExtensionAmount>
    <cbc:TaxExclusiveAmount currencyID="EUR">1500.00</cbc:TaxExclusiveAmount>
    <cbc:TaxInclusiveAmount currencyID="EUR">1785.00</cbc:TaxInclusiveAmount>
    <cbc:PayableAmount currencyID="EUR">1785.00</cbc:PayableAmount>
  </cac:LegalMonetaryTotal>
</Invoice>

SYNCLIUM CORE // VALIDATION GATE

DETECTEDUBL 2.1

CANONICALAST · ZOD PARSED

VALID…

RULES

TARGET // ZATCA

—

07MANDATE CLOCK // 2025 → 2028

The deadlines are real. The engine is ready.

Select a jurisdiction. The chamber reconfigures to its standard, clearance model, and Synclium support state.

JURISDICTION

SAUDI ARABIA

MANDATE TIMING

PHASE 2 · WAVES 1–15

STANDARD

ZATCA Fatoora Phase 2 XML

CLEARANCE MODEL

ZATCA clearance + reporting API

✓ SYNCLIUM READY0100000 standard · 0200000 simplified.

08O(N²) COLLAPSE // THE MATH THAT KILLS CONVERTERS

Add a format. Count the damage.

Every new dialect multiplies point-to-point work. The hub divides it.

N = 3

POINT-TO-POINT

N×(N−1)

= 6 converters

SYNCLIUM HUB

2×N

= 6 adapters

09ZERO DATA // THE CHAMBER EMPTIES ITSELF

Nothing is stored. Watch it leave.

Invoices live in transient RAM for the duration of one compilation — then the chamber is empty. No disk, no database, no retention.

BUFFER

PARSE

TRANSFORM

VALIDATE

EMIT

DOCUMENT IN FLIGHT — HELD IN RAM ONLY

SCOPE HONESTY: “ZERO DATA” COVERS SYNCLIUM ITSELF. RATE-LIMIT COUNTERS (SALTED HASHES, 24H TTL) AND ANY UPSTREAM AI PROVIDER RETENTION APPLY PER THEIR OWN POLICIES — SEE DOCS.

10OPEN MACHINE // NOT A BLACK BOX

Read the machine before you trust it.

Every adapter is three pure functions — import, export, validate — covered by golden-file matrices. MIT licensed. Extend it in a day.

REPOSITORY // PACKAGES

packages/corecanonical AST · zod + JSON schema
packages/formats/ublreference dialect adapter
packages/formats/facturxCII adapter
packages/formats/zatcaFatoora adapter (wraps UBL)
packages/formats/registrydetect · convert · validate
packages/extractGemini · Claude · mock providers
packages/clioib convert / validate / extract
packages/apiFastify · OpenAPI · stateless
examples/fixtures + 554-field eval set

import / export / validate — the only interface a new format must implement. Copy packages/formats/ubl, rename, register, ship.

EVAL // 554 VERIFIED FIELDS

mock baseline100.0% · 554/554
deterministic · CI-enforced
Gemini Flash96.9% · 537/554
free tier · GEMINI_API_KEY
Claude 3.5 Sonnet97.8% · 542/554
ANTHROPIC_API_KEY

READ THE SOURCE ↗ADD A FORMATMIT

11 // THE SITE ENDS. THE MACHINE REMAINS.

Cross the border.

SYNCLIUM TERMINALLIVE ENGINE · /api/v1

synclium v1.0 · stateless · mit

type 'run' to compile INV-2026-088 → zatca

CROSS THE BORDER →OPEN WORKBENCH →

Every invoicehas a border.