python-invoice-lint 1.0.0

EN16931 Invoice Validation Tool

invoice-lint: EN16931 CI Validation Tool

A command-line tool to validate e-invoices (UBL/CII) against EN16931 standards with pixel-perfect accuracy using official Schematron artifacts. Designed for CI/CD pipelines.

Quick Start

# Install
pip install invoice-lint

# Validate an invoice
invoice-lint validate --artifact 1.3.15 invoice.xml

Why this tool?

• Official Compliance: Uses the official Connecting Europe Facility (CEF) validation artifacts (XSLT/Schematron) directly. No approximation.
• Diff Engine: Detect strictness changes between versions before you upgrade. "What worked yesterday might fail today."
• CI/CD Ready: Zero-config exit codes (0=Pass, 1=Fail), JSON output, and pip-installable.

CI Integration (GitHub Actions)

Add this to your .github/workflows/validate.yml:

steps:
  - uses: actions/checkout@v3
  - name: Validate Invoices
    uses: your-org/invoice-lint@v1
    with:
      artifact: '1.3.15'
      path: './invoices'

Security Notice

[!IMPORTANT] No external data transmission. This tool runs 100% locally. Validation logic (XSLT) is downloaded from GitHub to your local cache (~/.cache/invoice-lint) ONLY. Your invoice data never leaves your environment.

Pricing (Advanced Features)

The basic validation is open and free. Advanced features like Diff Impact Analysis (Checking regressions on your historical data) require a commercial license.

Contact [e-mail] for license keys and access to advanced modules.