One key, one header, your own figures.

The key itself: company, environment, scopes, last use. The first call anybody writes.

One page of customers and suppliers, newest first.

A single customer with all of their master data.

Creates a customer. KRONENWERK draws the partner number from the business's own sequence.

Issued invoices, filterable by payment state and issue date.

One issued invoice, exactly as the archive froze it.

Starts an invoice draft for a customer. It is not thereby issued.

Transactions — orders, projects, production runs — with their stage and due date, newest first. Narrow to a period with period, from and to; the window goes by the date the work started.

Creates a transaction. Number, stage and timeline are produced as they are on the product's own screen.

Changes a transaction that already exists. A field left out stays as it is; "none" as the customer removes the customer.

Receivables and payables outstanding today, kept apart by direction.

This company's webhook endpoints.

The events an endpoint can subscribe to.

Register an endpoint; the signing secret is in the answer once.

Disable an endpoint; the delivery log stays.

An invoice was issued: the number is spent, the document is archived and immutable.

An invoice has been settled in full — by a payment, however it was recorded.

An invoice was cancelled: a reversal document exists that voids it in full. Nothing is deleted.

A supplier's invoice or an expense was recorded, with supplier, date and amounts.

A payment was recorded, with direction, amount, day and the document it settles.

A bank transaction was imported and is ready to be matched.

Compute HMAC with SHA-256 over the timestamp, a full stop and the unaltered body, using the secret as the key, and compare the result with v1. Reject a delivery whose timestamp is more than five minutes from your own clock.