Brazilian invoice validation with AI and official-source checks

Canceled, nonexistent or altered invoices stop before payment

Invoice validation confirms that a fiscal document exists, is active and carries the same data recorded at the official source. With mostQI Connect, MOST's AI reads Brazilian invoices in PDF, image or XML, checks them with the city hall, the state tax authority (Sefaz) or the National NFS-e Environment, and returns the result to your system: valid, canceled, divergent or not found.

Benefits of invoice validation

Fraud stopped before payment
Canceled or nonexistent invoices, or those whose amount differs from the official record, are flagged before they become a payment or reimbursement. Your workflow rules decide what to release and what to hold.
Every Brazilian fiscal document in one flow
NF-e, NFS-e, NFC-e, CT-e, NF3e and MDF-e are classified automatically and sent to the right extraction engine, in PDF, image or XML.
Field-by-field comparison
Issuer, recipient, amount, date and invoice status are compared with the official source. Discrepancies come with the reason, so your team can act fast.
API and webhook integration
Documents enter through an asynchronous API call and the full result arrives by webhook in your ERP, accounts payable or reimbursement system, with no typing.

See how it works (video in Portuguese)

How does invoice validation work with mostQI?

Validation runs in four steps, from sending the document to the final status. Low-confidence fields go through human review in mostValid before the official-source check.

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1. Upload and classification

Your company sends the invoice via API in PDF, image or XML. AI identifies the document type: NF-e, NFS-e, NFC-e, CT-e, NF3e, MDF-e or international invoice.

2. Data extraction

AI extracts the access key, number, date, issuer, recipient, amount and QR code. With XML, fields come straight from the file; low-score fields go to human review.

3. Official-source check

mostQI Enrichment looks up the invoice at the city hall, the state tax authority (Sefaz) or the National NFS-e Environment and compares issuer, recipient, amount, date and status.

4. Result in your system

The webhook delivers the extracted data and the status: valid, canceled (with the cancellation date), divergent (with the reason) or not found.

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