Proof
Proof
This page lists what can be checked about us without asking us. Every statement carries the link to the place you can read it yourself — and whatever we cannot back up is not here.
How often something ships
32 dated entries between 19/12/2025 and 22/08/2026, 10 of them in the last 90 days. Each entry says what changed, not that something changed.
See the changelogOperations
The operational state is read live from our status page, including when it looks bad. If the page does not answer, nothing is shown here: a green “all good” without a measurement would be a claim, not proof.
Open the status pagePublic source code
The connectors are public on GitHub. You can read what they do with your data before installing them — and they stay readable after you switch provider.
WooCommerce
JTL-Shop
PrestaShop
The WooCommerce plugin in the WordPress directory
The plugin is listed in the official wordpress.org directory. The figures below are fetched from there; where wordpress.org reports no number, none is shown here.
View the plugin on wordpress.orgFrom the field
Two write-ups from a real customer integration, including the defects we found in our own API along the way. Without the customer's name — we hold no written release for it.
29/08/2026
From PDF Invoice to E-Invoice: What Our First Customer Pipeline Taught Us
Read the write-upWhat we validate against
XRechnung 3.0.2 is checked against KoSIT 3.0.2 Schematron; every other format against its own rule set. The full mapping of format to schema to rule set is in the validator documentation.
Continuity
We are two people. That is why we build on standards rather than lock-in: what you produce with us works without us.
The full answer on the security page