Modules - basic operations

Hi,
can some one help with a basic code snippet for executing basic operations, from a module, 
to create an invoice, add payment and income etc?
Cant find any documentation on available functions/methods.

Our goal is to integrate a thirdparty erp api in to the akaunting system, so as to add more features, 

Best Regards

Hello Noorudheen,

The question is a little bit generic but I would suggest to check the following article for API:

https://akaunting.com/docs/developer-manual/restful-api

Regards