A skill for issuing Hungarian invoices through the szamlazz.hu Agent API, an online service for creating and managing invoices. It also handles pro forma invoices, cancellations, PDF retrieval, and Hungarian tax-number lookups.

Use it to create or cancel invoices, issue pro forma invoices, download invoice PDFs or XML, and look up companies through the Hungarian tax authority system.

It reduces the manual work of preparing invoices and checking Hungarian business tax details.

szamlazz — Skill for Claude Code by socialproKGCMG

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add socialproKGCMG/socialpro-szamlazz

Claude Code

/plugin install socialpro-szamlazz

Made for: Claude Code.

Or install socialpro-szamlazz, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/socialprokgcmg/socialpro-szamlazz/szamlazz/github.svg)](https://agentmods.dev/skills/socialprokgcmg/socialpro-szamlazz/szamlazz)

Your own site

<a href="https://agentmods.dev/skills/socialprokgcmg/socialpro-szamlazz/szamlazz"><img src="https://agentmods.dev/badge/skills/socialprokgcmg/socialpro-szamlazz/szamlazz/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/socialprokgcmg/socialpro-szamlazz/szamlazz"><img src="https://agentmods.dev/badge/skills/socialprokgcmg/socialpro-szamlazz/szamlazz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 202 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,453 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00202	$0.04453
Opus 5	$0.00101	$0.02227
Sonnet 5	$0.00040	$0.00891
Haiku 4.5	$0.00020	$0.00445

Measured 12d ago against content hash b590fee2b3ab, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

szamlazz scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/szamlazz/SKILL.md · 466 lines

How it starts

The opening of the file, as written. The whole thing — 466 lines — stays where its author put it; the contents beside it link to each section on GitHub.

All user-facing output (confirmations, summaries, error messages) is in Hungarian because the end user is Hungarian and the invoice itself is a Hungarian legal document. Internal reasoning and this file are in English so external reviewers can audit the logic.

Technical foundations

CLI entry point: python "${CLAUDE_PLUGIN_ROOT}/scripts/szamlazz_cli.py" <subcommand>
Subcommands: doctor, init, invoice, storno, proforma, pdf-fetch, xml-fetch, taxpayer
Config lookup: the CLI resolves config from these locations in order:
1. $SZAMLAZZ_CONFIG_DIR env var
2. ./.szamlazz/ in the current working directory
3. OS default (~/Library/Application Support/szamlazz/ on macOS, ~/.config/szamlazz/ on Linux, %APPDATA%\szamlazz\ on Windows)
4. ~/.claude/szamlazz/ (legacy fallback)
API key: loaded from $SZAMLAZZ_AGENT_KEY env var, or from <config_dir>/.env
PDF output: default ./invoices/YYYY-MM/<invoice_number>.pdf (current working directory)

Reference files (read these if you need details)

${CLAUDE_PLUGIN_ROOT}/skills/szamlazz/references/api-reference.md — Agent API endpoints, headers, error codes, VAT rates
${CLAUDE_PLUGIN_ROOT}/skills/szamlazz/references/xml-templates.md — XML templates for every operation

Critical calculation rule

szamlazz.hu does NOT compute totals — the client must send exact values:

nettoErtek  = mennyiseg × nettoEgysegar       (2 decimals, ROUND_HALF_UP)
afaErtek    = nettoErtek × afakulcs / 100     (2 decimals, ROUND_HALF_UP)
bruttoErtek = nettoErtek + afaErtek

Read the full file on GitHub · 466 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 466 lines · 202 tokens per session scan A b590fee2b3ab

Subscribe to this mod's changes

szamlazz is a skill published in the GitHub repository socialproKGCMG/socialpro-szamlazz (1 stars, last pushed 5mo ago), licensed MIT. It adds 202 tokens to every session and 4,453 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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