Szamlazz
Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API — with NAV taxpayer lookup and automatic partner cache
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Automated static analysis (no LLM) · v2.12.0 · 2026-10-17
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Content
/szamlazz — Hungarian Invoicing via szamlazz.hu
Issue, cancel (storno), and download Hungarian invoices from Claude Code using the szamlazz.hu Agent API: $ARGUMENTS
Part of the socialpro-szamlazz plugin by SocialPro — a Hungarian AI automation and digital marketing agency.
Purpose
Hungarian invoicing (számlázás) via szamlazz.hu is one of the most common SaaS-driven time sinks for Hungarian SMEs. Their Agent API is XML-only and undocumented in English. This command turns invoicing into a single natural-language prompt:
"állíts ki egy 150 000 Ft-os számlát Példa Kft.-nek webfejlesztésről"
Features
- Invoice types: regular, proforma (díjbekérő), and storno (cancellation)
- NAV taxpayer lookup: type a Hungarian tax number, get company name and address from the National Tax Authority
- Partner cache: customers remembered by tax ID for instant reuse
- Hungarian VAT: 27% / 18% / 5% / 0% / AAM, with KATA (kisadózó) support
- Cross-platform: macOS, Linux, Windows — Python 3.9+ and PyYAML only
- Interactive setup: first-run configures itself in 30 seconds via 3 questions
- Secure: API key stored in OS credential store
Usage
# Install the plugin
/plugin marketplace add socialproKGCMG/socialpro-plugins
/plugin install szamlazz@socialpro-plugins
# Issue an invoice
/szamlazz állíts ki egy számlát Példa Kft.-nek 150 000 Ft-ról webfejlesztésről
# Cancel an invoice
/szamlazz sztornózd a SOC-2026-0042 számlát
# Proforma / díjbekérő
/szamlazz díjbekérő Acme Ltd-nek 500 EUR-ról konzultációért
# Download PDF
/szamlazz töltsd le a SOC-2026-0042 PDF-jét
# NAV taxpayer lookup
/szamlazz ki ez a cég: 12345678-2-42Implementation
The command activates on Hungarian AND English trigger words (számla, invoice, sztornó, storno, díjbekérő, proforma, etc.). On first run it detects missing config and walks through an interactive setup:
- Agent API key — from szamlazz.hu settings
- Seller tax number — auto-fetches company data from NAV
- Bank account — auto-detects bank name from giro prefix
After setup, invoices follow a strict flow:
- Load seller config from
seller.yaml - Resolve customer (partner cache → NAV lookup → manual input)
- Collect line items with VAT rate
- Show confirmation summary (mandatory — invoices are legal documents)
- Fire XML to szamlazz.hu Agent API
- Save PDF locally, update partner cache
All amounts use Decimal with ROUND_HALF_UP to 2 decimals — the szamlazz.hu API rejects calculation mismatches.
Error Handling
The 7 most common szamlazz.hu error codes are translated into Hungarian with actionable recovery:
| Code | Meaning | Recovery |
|---|---|---|
| 3 | Auth failed | Regenerate Agent key |
| 54, 55 | e-Számla cert | Retry with eszamla=false |
| 57, 259-264 | Calc mismatch | Recalculate with Decimal |
| 136 | Unpaid balance | Pay szamlazz.hu subscription |
Requirements
- Python 3.9+
- PyYAML (
pip install pyyaml) - szamlazz.hu account with Agent API key
Links
- Plugin repo: github.com/socialproKGCMG/socialpro-szamlazz
- Plugin homepage: socialpro.hu/claude-code-plugins/szamlazz
- szamlazz.hu API docs: szamlazz.hu
- Author: SocialPro — Hungarian AI automation agency