Integration with Rails app 2019

SOLVED

Hello and good day to all.

I'm looking for a way to access SAGE 50 endpoints for purchase orders, invoice. inventory etc through our front-end system built in Rails. The ideal solution would be through an API which I couldn't find any suitable yet. The second resort would be through a 3rd party connector and lastly would be through the SDK, this being last resort due to the difference in languages of the SDK and our system.

I'm sure other have done this before, hence why I'd like to ask for any advice or tips to approach this. Also, I'd appreciate the link to the SDK as most of the links I've gotten doesn't lead me to anywhere. Thanks in advance!