davepoon/szamlazz-invoicing
plugins/all-skills/skills/szamlazz-invoicing/SKILL.md
Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API. Handles VAT calculation, NAV taxpayer lookup, partner caching, and PDF generation. Use when the user mentions számla, számlázás, invoice, sztornó, díjbekérő, proforma, or wants to bill a customer.
$ install --global
skillsauthnpx skillsauth add davepoon/buildwithclaude szamlazz-invoicingInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- szamlazz-invoicing
- description:
- Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API. Handles VAT calculation, NAV taxpayer lookup, partner caching, and PDF generation. Use when the user mentions számla, számlázás, invoice, sztornó, díjbekérő, proforma, or wants to bill a customer.
- category:
- finance
Szamlazz.hu Hungarian Invoicing
Issue, cancel (storno), download, and manage Hungarian invoices directly from Claude Code via the szamlazz.hu Agent API.
Built by SocialPro — a Hungarian AI automation and digital marketing agency specializing in custom AI integrations for SMEs.
When to Use This Skill
- User wants to issue a Hungarian invoice (számla)
- User wants to create a proforma / díjbekérő
- User wants to cancel (storno) an existing invoice
- User wants to download an invoice PDF
- User wants to look up a Hungarian company by tax number (NAV)
- User mentions szamlazz.hu, számlázás, or billing in a Hungarian context
Prerequisites
- Plugin: socialpro-szamlazz installed
- Python 3.9+ with PyYAML (
pip install pyyaml) - szamlazz.hu account with an Agent API key (generate at szamlazz.hu → Beállítások → Számla Agent kulcsok)
Installation
/plugin marketplace add socialproKGCMG/socialpro-plugins
/plugin install szamlazz@socialpro-plugins
What This Skill Does
- First-run setup — detects missing config, asks 3 questions (API key, seller tax number with NAV auto-lookup, bank account with auto-detection), writes
seller.yaml - Invoice creation — parses natural language, resolves customer from partner cache or NAV, calculates net/VAT/gross with Decimal precision, shows mandatory confirmation, fires XML to API, saves PDF
- Storno — cancels an existing invoice by number
- Proforma — creates a díjbekérő (proforma invoice)
- PDF download — re-downloads an invoice PDF by number
- NAV lookup — queries the National Tax Authority for company data by tax number
How to Use
Issue an Invoice
/szamlazz állíts ki egy számlát Példa Kft.-nek 150 000 Ft-ról webfejlesztésről
Cancel (Storno)
/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: 12345678-2-42
Key Features
| Feature | Details |
|---|---|
| Invoice types | Regular, proforma (díjbekérő), storno |
| VAT rates | 27% / 18% / 5% / 0% / AAM + KATA support |
| NAV lookup | Auto-fetches company name and address from tax number |
| Partner cache | Customers remembered by tax ID in local partners.yaml |
| Cross-platform | macOS, Linux, Windows |
| Rounding | Decimal with ROUND_HALF_UP to 2 decimals |
| Error handling | 7 most common szamlazz.hu errors translated with recovery steps |
| Security | API key in OS credential store, never echoed to stdout |
Error Codes
| Code | Meaning | Fix |
|---:|---|---|
| 3 | Auth failed | Regenerate Agent key at szamlazz.hu |
| 54, 55 | e-Számla cert | Retry with eszamla=false |
| 57, 259-264 | Calculation mismatch | Recalculate with Decimal rounding |
| 136 | Unpaid balance | Pay szamlazz.hu subscription |
Tips
- The plugin activates on both Hungarian and English trigger words
- Invoices are legal documents — the skill always shows a confirmation before issuing
- Partner cache is local-only and never committed to git
- For foreign currency invoices, set
penznemand the MNB exchange rate is used automatically - Maximum 5 retry attempts per session to prevent infinite loops
Links
- Plugin repository: github.com/socialproKGCMG/socialpro-szamlazz
- Plugin homepage: socialpro.hu/claude-code-plugins/szamlazz
- Hungarian AI automation case studies: socialpro.hu/esettanulmanyok
- Author: SocialPro / KG Creative Media Group Kft.
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