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NAV Online Számla

Ask your AI about your NAV invoices, in plain language

Try it free How does it work?

onlineszamla.nav.gov.hu

Illustrative rendering — actual UI is the service's own interface

/ what it does

How does the AI help?

The NAV connector connects to the Hungarian Tax Authority's Online Invoice system. With a technical user login it can read invoice data, export XML, and verify VAT numbers, all through your AI agent in plain language.

/ use cases

What can you do with it?

No coding, no API docs. Just plain English.

📋

Monthly overview in seconds

Ask your AI: "Summarize September's incoming invoices broken down by VAT rate", done.

🔍

VAT number validation

Before invoicing a new partner: "Check VAT number 12345678-9-01", instant validation.

💰

Outstanding invoice tracking

"Which of my invoices haven't been acknowledged by NAV yet?", instant list with explanations.

📤

XML export for accountant

"Export October-December invoices as XML", it saves the file for you too.

/ tools

Available Tools (9)

Every tool can be invoked in natural language through your AI assistant.

query_taxpayer

Query taxpayer information from NAV by tax number. Returns company name, address, VAT status.

claude > Check VAT number 12345678

query_invoice_data

Get full invoice data by invoice number. Returns complete invoice details.

claude > Show me invoice INV-2024-001

query_invoice_digest

Search invoices with filters. Returns paginated invoice summaries by date range or original invoice number.

claude > List last month's incoming invoices

query_invoice_check

Check if an invoice exists in NAV system.

claude > Does invoice INV-2024-050 exist in NAV?

query_invoice_chain_digest

Query the modification chain of an invoice (original + all modifications/stornos).

claude > Show modification history of invoice INV-2024-001

query_transaction_status

Check the processing status of a previously submitted invoice transaction.

claude > What is the status of transaction TX-123?

query_transaction_list

List transactions within a date range.

claude > List all NAV transactions from this week

manage_invoice

Submit invoice data to NAV (create, modify, or storno). Accepts BASE64-encoded invoice XML.

claude > Submit this invoice XML to NAV

manage_annulment

Submit technical annulment for invoices.

claude > Annul invoice INV-2024-099 for technical error

/ examples

How to use your AI

Copy any of these commands into your AI assistant:

claude > List my incoming invoices from last month in NAV

claude > Summarize my 2024 outgoing invoices by VAT rate

claude > Check VAT number 12345678-9-01

claude > Which invoices haven't been acknowledged by NAV yet?

claude > Export all invoices from 2024 Q4 as XML

/ setup

3 steps and you're done

Add your NAV Online Számla credentials, copy the MCP URL, and your AI agent can query your data instantly.

No credit card. No hidden fees. Free tier stays free.