Detect Dockit Server Agent existence
How do I check if Dockit Server Agent is installed in the target SharePoint server?
Dockit client application will automatically connect to the web service during content migration, based on the task settings. You do not have to connect to the web service manually.
You can verify if Dockit server agent component is installed in the target SharePoint server using Server Agent Test Tool in Dockit application. Launch this tool by clicking [Tools -> Server Agent Test Tool]
Refer Install Dockit Server Agent section in online Help document for more information.