Invoke Workato Workflows from outside of Workato

[tinazhou2007]

Hello, there, 

Is it possible to invoke a Workato Workflow manually from outside of Workato.  The requirement is, the workflow needs to be invoked manually for someone who does not have access to Workato.  let's say Workday.  someone needs to invoke a Workato workflow manually in Workday. Is it possible?

Thanks!

Tina