Is there a full documentation?

[al]

There're some usage examples in the README. However, i couldn't seem to find full documentation. Is there a full documentation for the api?

[Tim Herzog]

There is documentation here: https://pypi.org/project/wbgapi/

And several additional examples here: https://github.com/tgherzog/wbgapi/tree/master/examples

And every function and class is extensively documented: use the help function at the python command prompt.