The API is based on a REST-style architecture and uses HTTP/HTTPS to manage communication between systems.
Any programming language that can send post information via HTTP and can parse XML will interact with this API. We have constructed a PHP wrapper class that provides methods to simplify communication between the API and 3rd party apps.
An 18 page documentation manual is also available for free to help you get the most out of the API's functions. Download it here: //www.nolapro.com/nolapro_api.pdf
Download the test code for npapi.php as referred to in the .pdf instructions here: //www.nolapro.com/npapi.zip