Upload an XML invoice and check the rules before sending. We only show a result once live API validation has actually run. If the API is unavailable, you will not get a made-up "green pass".
This tool is built for server-side validation of XML documents. We only show a result once the Slovak e-Invoicing Centre validation gateway responds; if it is down, you will not get a false confirmation.
Use the public validator for test or anonymized XML. Production documents and sensitive data belong in workspace/API mode with an audit trail, retention policy and higher limits.
# Validate a single XML file via JSON payload curl -X POST https://efakturacentrum.sk/api/validate-file \ -H "Content-Type: application/json" \ -d '{ "filename": "faktura.xml", "content": "<Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\">...</Invoice>" }' # Batch validate multiple XML files curl -X POST https://efakturacentrum.sk/api/validate \ -H "Content-Type: application/json" \ -d '{ "files": [ { "filename": "faktura1.xml", "content": "<Invoice>...</Invoice>" }, { "filename": "faktura2.xml", "content": "<Invoice>...</Invoice>" } ] }'
import { readFile } from "node:fs/promises"; const xml = await readFile("faktura.xml", "utf8"); const response = await fetch("https://efakturacentrum.sk/api/validate-file", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ filename: "faktura.xml", content: xml }) }); const result = await response.json(); console.log(result.valid, result.fatal_count, result.issues);
import json from urllib.request import Request, urlopen with open("faktura.xml", "r", encoding="utf-8") as f: xml = f.read() payload = json.dumps({"filename": "faktura.xml", "content": xml}).encode("utf-8") req = Request( "https://efakturacentrum.sk/api/validate-file", data=payload, headers={"Content-Type": "application/json"}, method="POST", ) print(json.loads(urlopen(req, timeout=30).read()))
{
"filename": "faktura.xml",
"valid": false,
"fatal_count": 1,
"warning_count": 0,
"summary": {
"invoice_id": "FV-2026-0001",
"seller_name": "Moja Firma s.r.o.",
"payable_amount": "1240.00",
"currency": "EUR"
},
"issues": [
{
"level": "fatal",
"layer": "EN16931",
"rule_id": "BR-CO-10",
"message": "Súčet riadkov nesedí s LegalMonetaryTotal."
}
]
}