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szamlazz-invoicing

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.

Stars
2,987
Source
davepoon/buildwithclaude
Updated
2026-05-26
Slug
davepoon--buildwithclaude--szamlazz-invoicing
View on GitHubRaw SKILL.md

// install — copy + paste into any project

mkdir -p .claude/skills && curl -fsSL https://raw.githubusercontent.com/davepoon/buildwithclaude/HEAD/plugins/all-skills/skills/szamlazz-invoicing/SKILL.md -o .claude/skills/szamlazz-invoicing.md

Drops the SKILL.md into .claude/skills/szamlazz-invoicing.md. Works with Claude Code, Cursor, and any agent that loads SKILL.md files from .claude/skills/.

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

  1. 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
  2. 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
  3. Storno — cancels an existing invoice by number
  4. Proforma — creates a díjbekérő (proforma invoice)
  5. PDF download — re-downloads an invoice PDF by number
  6. 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 penznem and the MNB exchange rate is used automatically
  • Maximum 5 retry attempts per session to prevent infinite loops

Links