To use the ProQoS SE API, you need to ask ProQoS SE sales system owner to get your unique API key. Once you have this key, you can start making the API calls.
To connect API service you should use this URL https://magboss.pl/api/METHOD.FORMAT
(for example: https://magboss.pl/api/getproducts.json)
Request parameters should be pass as GET request.
If method has the POST params specified - POST request should be used instead.
Simply add 'test=1' to your query params.
For example: https://magboss.pl/api/api/createSale.json?test=1