(Please, don't take into account the displayed budget. Thank you !) The aim of this system is to ease the user accounting management. The module will allow users to export automatically or manually his invoices from Magento or Woocommerce to an online invoicing SaaS. For the automatic mode, there must be a trigger at order or invoice generation. The project is divided in two parts: The full working module ready for the Magento and Woocommerce market The secured API with authentication and its json RESTful communication written in plain OO PHP > 5.3. The backend API do not need to have a GUI nor a database schema with persistence logic. He have to work as a standalone component. The integration into the invoicing SaaS will be performed by our team.