This is the documentation for the Tapir Additional JSON Commands Add-On for Archicad. The Add-On registers several new commands in Archicad in the TapirCommand namespace.
Here is an example of calling a command using the official archicad python package:
from archicad import ACConnection
conn = ACConnection.connect ()
acc = conn.commands
act = conn.types
response = acc.ExecuteAddOnCommand (act.AddOnCommandId ('TapirCommand', 'GetAddOnVersion'))
print (response)