@readystack/einvoice-mandate-lint

E-Invoice Mandate Lint - EU 2026

Lints UBL and CII invoice XML against EN 16931 and the national e-invoicing mandates that are live in 2026

Install

npx @readystack/einvoice-mandate-lint file

Node 18+. The same 35 rules as the VS Code extension, from a terminal or CI.

Free

• Lint the invoice XML you have open - every EN 16931 core field plus the country mandate rules its CustomizationID and seller country select, reported with line numbers.
• --rules lists every rule

With a licence ($29 once)

• Scan every invoice XML in the workspace in one pass and export the findings as JSON, CSV or SARIF you keep and run in CI.

@readystack/einvoice-mandate-lint --dir ./templates --report html --out report.html

An EN 16931 / Peppol integration consultant reviews an invoice mapping at about $170 an hour.

7-day refund, no questions. Set READYSTACK_LICENSE=<key> or run --license <key> once.

Get a licence