About
TODO: 2-3 sentence bio. Background, focus (e-invoicing, developer tools), why you're building invoice-api.xhub. Used on author page and in Person schema — please overwrite.
Posts by Patrick Jerominek (6)
Automatically Validate and Archive E-Invoices with n8n
Fully automated n8n workflow: receive e-invoices via email, auto-detect the format, validate and archive compliantly — with Slack error alerts.
Customize invoice templates via API: BlockTemplate tutorial
How to generate PDF invoices with logo, brand colors and dynamic VAT rows using JSON only. Incl. EN 16931 compliance and ZUGFeRD pitfalls.
Create XRechnung with n8n — Step-by-Step Tutorial
Learn how to automatically create XRechnung invoices with n8n and Invoice-api.xhub. From Google Sheets to validated XML — completely without coding.
Our Biggest Customer Is Ourselves: Dogfooding at xhub.io
invoice.xhub.io runs on the same API we offer developers. A dogfooding story about shared libraries, real validation and our own pitfalls.
E-Invoicing Mandate 2025: Complete Guide for Developers
E-invoicing becomes mandatory for B2B in 2025. Technical guide with code examples for XRechnung, ZUGFeRD, and Peppol. Implementation checklist included.
Automatically Validate E-Invoices with n8n
Automated invoice validation with n8n and Invoice-api.xhub: schema checks, error diagnosis and escalation — completely without code.