I am surprised that there is no out-of-the-box tool to view objects details of a Workflow Manager 1.0 installation. Lucky that Dave Cliffe from Microsoft built Workflow Resource Browser Tool to show us the scope hierarchy, and view information about activities, workflows, security policies and configuration under the currently selected scope.
After downloading the source code, you need to compile it and build the assembly through Visual Studio 2012. Or you can download Microsoft.Workflow.Explorer.bin.rar directly.
Workflow Service Address is the only information we need.
Activity details ( XAML ).