First off, welcome to the Pipedream community. Happy to have you!
Neat guide, I’ve not heard of a webhook powered PowerShell script before, but that’s an interesting way to remotely manage Windows boxes.
I’m going to assume you have already implemented that PowerShell script on your Windows server, and you just need to wire it up to a Pipedream workflow.
These docs describe how to emit SSE events from a Pipedream Node.js workflow step: Server-Sent Events (SSE)
I would recommend starting with a brand new workflow that is triggered by a timer, then you can add a Node.js code step which will contain the SSE call to your Windows Server.