> ## Documentation Index
> Fetch the complete documentation index at: https://docs.penzum.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect Számlázz.hu

> Automatic invoice sync with Számlázz.hu

## Connection steps

1. Open **Settings → Connections**
2. Click the **Számlázz.hu** row
3. Paste the **Agent key** from your Számlázz.hu account
4. After saving, the first sync starts automatically

<Info>
  You'll find your Agent key under **Settings → API** in Számlázz.hu.
</Info>

## How does the sync work?

Once connected, Penzum periodically fetches your paid invoices. The first sync loads data starting from the beginning of the current calendar year.

## Manually recorded invoices

For invoices synced from Számlázz.hu, the **Mark as paid** button is disabled — the status is controlled by Számlázz.hu.

## Disconnecting

You can disconnect under **Settings → Connections**. Already-synced data is retained.