While Wyam is certainly still usable, it's been rebranded and rebooted as Statiq with a ton of improvements. You almost certainly want to look there unless you're already a Wyam user.

IExecutionContext.

ApplicationInput Property

Summary

Gets any input that was passed to the application (for example, on stdin via piping).
Assembly
Wyam.Common.dll
Namespace
Wyam.Common.Execution
Containing Type
IExecutionContext

Syntax

string ApplicationInput { get; }

Value

Type Description
string The application input.
GitHub