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Agent skill

Szamlazz Invoicing

by davepoon in davepoon/buildwithclaude

Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API.

MITAuto-check passedDocuments & Office

Install Szamlazz Invoicing

skills CLI
$ npx skills add davepoon/buildwithclaude --skill szamlazz-invoicing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install davepoon/buildwithclaude szamlazz-invoicing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/davepoon/buildwithclaude.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/all-skills/skills/szamlazz-invoicing .claude/skills/szamlazz-invoicing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
szamlazz-invoicing
GitHub stars
3.6k
Token cost
~1.1k tokens
SKILL.md length
410 words
Files
1
Skills in repo
247
Repo updated
First seen
Licence
MIT

At a glance

Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API.

  • Works in 6 steps: First-run setup — detects missing… → Invoice creation — parses natural… → Storno — cancels an existing invoice by… → …
  • The user mentions számla
  • SKILL.md covers When to Use This Skill, Prerequisites, Installation and What This Skill Does, plus 5 more sections
  • Calls pip

What it does

Szamlazz Invoicing is an agent skill from davepoon/buildwithclaude. 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.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Documents & Office, covering Forms and invoices and PDF. The repository describes itself as: A single hub to find Claude Skills, Agents, Commands, Hooks, Plugins, and Marketplace collections to extend Claude Code, Claude Desktop, Agent SDK and OpenClaw. The licence is MIT.

When your agent uses it

  • The user mentions számla
  • Wants to bill a customer

Example prompts

  • “/szamlazz-invoicing”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. First-run setup — detects missing config, asks 3 questions (API key, seller tax number with NAV auto-lookup, bank account with…
  2. Invoice creation — parses natural language, resolves customer from partner cache or NAV, calculates net/VAT/gross with Decimal precision…
  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

What it can do on your machine

Read from SKILL.md and the folder at commit 616deb5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • pip

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • socialpro.hu
    • github.com
    • szamlazz.hu

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Szamlazz Invoicing loads about 1.1k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 410 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from davepoon/buildwithclaude at commit 616deb5, republished under its MIT licence (© davepoon). 410 words, ~1,064 tokens.

Download SKILL.mdSave it as .claude/skills/szamlazz-invoicing/SKILL.md (or your agent's skills folder).
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

bash
/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
Show full SKILL.md (182 more words)Show less

Key Features

FeatureDetails
Invoice typesRegular, proforma (díjbekérő), storno
VAT rates27% / 18% / 5% / 0% / AAM + KATA support
NAV lookupAuto-fetches company name and address from tax number
Partner cacheCustomers remembered by tax ID in local partners.yaml
Cross-platformmacOS, Linux, Windows
RoundingDecimal with ROUND_HALF_UP to 2 decimals
Error handling7 most common szamlazz.hu errors translated with recovery steps
SecurityAPI key in OS credential store, never echoed to stdout

Error Codes

CodeMeaningFix
3Auth failedRegenerate Agent key at szamlazz.hu
54, 55e-Számla certRetry with eszamla=false
57, 259-264Calculation mismatchRecalculate with Decimal rounding
136Unpaid balancePay 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

© davepoon, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/all-skills/skills/szamlazz-invoicing of davepoon/buildwithclaude.

Open the folder on GitHubat commit 616deb5

Compare with similar skills

Szamlazz Invoicing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Szamlazz Invoicing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Szamlazz Invoicing this skilldavepoon/buildwithclaude3.6k—~1.1kAutomated safety check: PassMIT
PDFzai-org/ZCode7.7k—~18kAutomated safety check: NotesProprietary
Code2mediatsingliuwin/autoclaw283—~985Automated safety check: PassMIT
Reportlabjimmc414/Kosmos5951 repos~4.2kAutomated safety check: PassNone
PDF ReadingWide-Moat/open-computer-use1261 repos~2.7kAutomated safety check: PassProprietary
PDF Processing Toolkittelagod/code-abyss244—~532Automated safety check: NotesMIT

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Categories

Questions about Szamlazz Invoicing

What does Szamlazz Invoicing do?

Issue, cancel, and fetch Hungarian invoices via the szamlazz.hu Agent API. Szamlazz Invoicing is an agent skill from davepoon/buildwithclaude.hu Agent API.

When should I use Szamlazz Invoicing?

Szamlazz Invoicing fits situations like: the user mentions számla; wants to bill a customer.

How do I install Szamlazz Invoicing in Claude Code?

Run `npx skills add davepoon/buildwithclaude --skill szamlazz-invoicing -a claude-code`. Or copy the skill folder (plugins/all-skills/skills/szamlazz-invoicing in davepoon/buildwithclaude) into .claude/skills/szamlazz-invoicing in your project. Claude Code loads it when a task matches its description.

How do I install Szamlazz Invoicing in Codex?

Run `npx skills add davepoon/buildwithclaude --skill szamlazz-invoicing -a codex`. Or copy the skill folder (plugins/all-skills/skills/szamlazz-invoicing in davepoon/buildwithclaude) into .agents/skills/szamlazz-invoicing in your project. Codex loads it when a task matches its description.

Can I use Szamlazz Invoicing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add davepoon/buildwithclaude --skill szamlazz-invoicing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/szamlazz-invoicing, .gemini/skills/szamlazz-invoicing, .github/skills/szamlazz-invoicing and .opencode/skills/szamlazz-invoicing in your project.

What does Szamlazz Invoicing need to run?

Going by SKILL.md and its folder, Szamlazz Invoicing needs the command-line tools its instructions call (pip). Our summary lists: Python 3.

Does Szamlazz Invoicing access the network?

SKILL.md names 3 domains. As links in the text: socialpro.hu, github.com and szamlazz.hu. This is read from the text; nothing was executed.

Is Szamlazz Invoicing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Szamlazz Invoicing use?

Szamlazz Invoicing is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Szamlazz Invoicing use?

About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Szamlazz Invoicing?

Skills that share tags, products or a category with Szamlazz Invoicing: PDF (zai-org/ZCode, 7.7k stars), Code2media (tsingliuwin/autoclaw, 283 stars), Reportlab (jimmc414/Kosmos, 595 stars) and PDF Reading (Wide-Moat/open-computer-use, 126 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Szamlazz Invoicing?

davepoon (a GitHub user) maintains it in davepoon/buildwithclaude, which has 3,610 GitHub stars. The repository holds 247 skills in this directory. The repository was last updated on October 9, 2026.

Source: davepoon/buildwithclaude on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.