It's a platform where you can create beautiful, customizable and dynamic, tax-compliant invoices with payment links built in, so your clients pay you faster. In your dashboard you can see your payments and payouts to your bank.
This is just an initial release and plenty of features are in the pipeline, like an online builder, automated sending, 3rd party app integration, etc.
Feel free to poke around and let me know your thoughts!
Show HN: InvoicingAPI is finally ready
invoicingapi.com