Widget ID for Dashboards

Hello, I am trying to get started creating widgets to add to dashboard where the value below is grabbed from. Is it just made up? The @value. Is there a tool or something to easily create these widgets?

“id”: {
@type”: “string”,
@value”: “95cbaf14-5c2d-48ff-bc2d-23f21d4da9b1”

he @gumba128

sorry I did not get your question - could you please elaborate a little.

thxnk