⚠️Install with caution. This skill has very few installs. Always review the source and verify it on clawhub.ai before installing. Community-built skills run with agent permissions — only install ones you trust.

💰 Finance & Accounting

ZUGFeRD Invoice Mergerv1.0.0

Name: ZUGFeRD Invoice Merger
Author: quantx-heiko

zugferd-invoice

quantx-heiko

Merge ZUGFeRD 2.1 compliant invoice PDF and time report into a single visible multi-page PDF/A-3b file with embedded XML for German B2B/Gov use.

e-invoicingeuropeangermanyinvoicelatestpdfxmlzugferd

Download Package View on ClawHub

Installs (all time)

Installs (current)

Downloads

932

Stars

CreatedMar 1, 2026

UpdatedMay 18, 2026

Install & Quick Start

Install via ClawdBot CLI:

clawdbot install quantx-heiko/zugferd-invoice

Skill Package6 files

📋SKILL.mdmarkdown

Failed to load file.

Quality Score

B63/100

Grade Fair — based on market validation, documentation quality, package completeness, maintenance status, and authenticity signals.

Market Validation7/35

· 689 downloads (moderate demand)
· No tracked installs (may still have real users via manual install)

Documentation20/25

· SKILL.md present
· Detailed documentation (≥3000 chars)
· Contains usage examples or trigger description
· Detailed summary

Package Completeness11/15

· skillAssets present (5 files)

Security Analysis

💙 Low Risk

UNDOCUMENTED_EXTERNALlow

Calls external URL not in known-safe list

https://github.com/ZUGFeRD/mustangproject/releases/download/core-2.22.0/mustang.

Audited Apr 17, 2026 · audit v1.0

💡

Usage Guide

Generated Mar 22, 2026

German freelancers and small businessesAccounting and finance professionals in the EUSoftware developers building e-invoicing toolsintermediate

💡 Application Scenarios

German Freelancer InvoicingFreelance Services

A freelancer in Germany needs to submit invoices with detailed time reports to clients, requiring ZUGFeRD compliance for B2B portals. This skill merges the invoice PDF and time report PDF into a single compliant document with both pages visible, ensuring acceptance by German accounting systems.

EU Export Business ComplianceInternational Trade

A small business exporting goods within the EU must issue e-invoices that meet EN16931 standards for cross-border transactions. The skill processes existing ZUGFeRD invoices by merging additional shipping documents, maintaining PDF/A-3 compliance for government and B2B submissions.

Accounting Firm Batch ProcessingAccounting and Finance

An accounting firm handles multiple clients' invoices and attachments, needing to automate ZUGFeRD-compliant merging without paid APIs. Using the GhostScript workflow, they can batch-process invoices with visible pages, reducing manual effort and ensuring validation for German tax authorities.

Software Developer IntegrationSoftware Development

A developer building an invoicing app for German markets integrates this skill to add ZUGFeRD merging capabilities. It allows users to combine invoices and reports into compliant PDFs, leveraging open-source tools like MustangProject for cost-effective e-invoicing features.

Government Contractor DocumentationPublic Sector Contracting

A contractor working with German public sector clients must submit invoices with detailed project reports in ZUGFeRD format. The skill merges the invoice and report into a single PDF with visible pages, meeting strict governmental compliance requirements for electronic submissions.

💼 Business Models

Freemium SaaS IntegrationSubscription fees from premium tiers

Offer a free basic version of this skill within a larger invoicing platform, with premium features like batch processing or advanced validation. Revenue comes from subscription upgrades for businesses needing high-volume ZUGFeRD compliance.

Consulting and CustomizationService fees from customization projects

Provide consulting services to help businesses integrate and customize this skill for their specific workflows, such as adapting to legacy systems or adding support for other EU e-invoicing standards. Revenue is generated through hourly or project-based fees.

Open-Source Support and TrainingSupport contracts and training fees

Monetize by offering paid support, training, and maintenance for organizations using this skill, including troubleshooting GhostScript or Java issues and ensuring compliance updates. Revenue streams include support contracts and workshop fees.

💬 Integration Tip

Ensure all dependencies like Java and GhostScript are correctly installed and configured on the user's system before running the skill to avoid common errors like 'gs not found'.