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Számlázz.hu

Invoicing, receipts, and storno management in your Szamlazz.hu account through AI

What is it for?

Számlázz.hu is one of Hungary's leading invoicing platforms. The connector authenticates with a static Számla Agent key generated in your web account: a non-expiring token, no "kicked out every few days" OAuth instability. The connector supports the full invoice and receipt lifecycle: issuance, storno, query, payment registration, and proforma flow. Financial safety: the connector dedup-prechecks every invoice creation, so retries do not produce duplicate documents.

www.szamlazz.hu

Screenshot of the Számlázz.hu interface

/ use cases

What can you do with it?

No coding, no API docs. Just plain English.

🧾

Invoice creation in plain language

"Issue an invoice to Kovacs Kft. for 150,000 HUF with 27% VAT, due tomorrow", and the connector builds the XML, validates line totals, and returns the issued invoice number.

📰

Proforma to final invoice

"Create a proforma for 300,000 HUF for Example Ltd.": proforma issuance, and one call later it can be deleted when the final invoice is in place.

🔁

Storno in a single command

"Cancel invoice 2026/SZ-0042", and the connector creates the storno counterpart and returns the new storno invoice number.

💵

Cash/card receipt issuance

"Issue a 9,990 HUF cash receipt", and it produces the receipt instantly with the pre-registered prefix.

/ tools

Available Tools (9)

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

read-only

Query (2)

These tools only read: they fetch data and never change anything.

query_invoice
Query an invoice (by szamlaszam, rendelesSzam, or szamlaKulsoAzon). Returns totals, payment status, and outstanding balance.
claude >Show invoice 2026/SZ-0030
query_receipt
Query a receipt by its receipt number.
claude >Show receipt 2026/NY-0007

write

Actions (7)

These tools create or modify data. Query tools are always available; write tools can be toggled in the connector settings.

create_invoice
Issue a new invoice (normal or e-invoice). Dedup-protected: re-running the same logical request returns the existing invoice instead of creating a duplicate.
claude >Issue an invoice for 150,000 HUF with 27% VAT
create_proforma
Issue a proforma / quote. Same input shape as create_invoice; gets deleted later when the final invoice is in place.
claude >Create a proforma for 300,000 HUF
create_receipt
Issue a receipt (cash/card payment, no buyer details needed). Uses a pre-registered receipt prefix.
claude >Issue a 9,990 HUF cash receipt
cancel_invoice
Issue a storno (reverse) invoice against an existing one. One-shot per source invoice.
claude >Cancel invoice 2026/SZ-0042
register_payment
Register a payment against an invoice. Reduces the outstanding balance; defaults to additive (multiple calls accumulate).
claude >Record a 50,000 HUF bank transfer against invoice 2026/SZ-0030
delete_proforma
Delete a proforma (after the final invoice has been issued). Pass exactly one of szamlaszam or rendelesSzam.
claude >Delete proforma 2026/DB-0010
cancel_receipt
Cancel (storno) a receipt.
claude >Cancel receipt 2026/NY-0007

/ examples

How to use your AI

Copy any of these commands into your AI assistant:

claude > Issue an invoice to Kovacs Kft. for 150,000 HUF with 27% VAT

claude > Create a proforma for 300,000 HUF for Example Ltd.

claude > Cancel invoice 2026/SZ-0042

claude > Issue a 9,990 HUF cash receipt

claude > How much is outstanding on invoice 2026/SZ-0030?

claude > Record a 50,000 HUF bank transfer payment against invoice 2026/SZ-0030

/ setup

3 steps and you're done

Add your Számlázz.hu credentials, copy the MCP URL, and your AI agent can query your data instantly.

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