The Call function node is used for calling Python functions in your workflows. There is a number of built-in functions for you to implement, but also you can build custom Python functions for interacting with users, invoking requests on external systems, and returning results.
Reference
To view the reference material on built-in functions, open the help page. It is available on your instance with the following address: https://<yourinstance>.konverso.ai/doc/Call-Function-reference_781418611.html. Just substitute <yourinstance> with the actual name of your host.
Custom functions
In addition, you can build custom functions. This page explains how you can build your own workflow functions.
Create and Edit your new functions
Go to Developers. There you will see files such as: