Számlázz.hu

Via the Számla Agent API, your AI assistant can issue invoices, create proformas, generate receipts, cancel documents, and query records, all through plain language. Uses a static agent key, no OAuth expiry, no reconnects.

Credentials

All data is protected on the server with AES-256-GCM encryption.

Write operations

Decide whether your assistant can only read, or also make changes through this connector.

Enable write tools

Read tools (lists, queries) are always available. When enabled, write tools (create, update, delete) become available too. Transactional calls are logged for 90 days.

Affected write tools (7)

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.
create_proforma: Issue a proforma / quote. Same input shape as create_invoice; gets deleted later when the final invoice is in place.
create_receipt: Issue a receipt (cash/card payment, no buyer details needed). Uses a pre-registered receipt prefix.
cancel_invoice: Issue a storno (reverse) invoice against an existing one. One-shot per source invoice.
register_payment: Register a payment against an invoice. Reduces the outstanding balance; defaults to additive (multiple calls accumulate).
delete_proforma: Delete a proforma (after the final invoice has been issued). Pass exactly one of szamlaszam or rendelesSzam.
cancel_receipt: Cancel (storno) a receipt.

Available tools (9)

These are the tools your assistant can invoke on this connector, in plain language.

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

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

Usage

This is how to call this connector through the MCP endpoint.

MCP call example

{
  "connector": "szamlazz_hu",
  "action": "...",
  "params": { ... }
}

You can find the MCP endpoint URL on the API keys page.

Documentation

Számlázz.hu official docs

Having trouble? Email us at support@connectors.hu.