So I checked out the CLI, but there doesn't seem to be a way to update an item? Will op create update the existing document if given the same UUID? I am totally willing to put an example script up here but that's where I am stuck.
I poked around to see what could be done here and it looks like we're out of luck for now; there is indeed no way to update an existing item as confirmed by this comment. That comment is from last year, but as you pointed out I see nothing in the documentation currently that would suggest support for updating existing items has been added since.
This is something that would be pretty trivial to add first-class support for within Watchtower, though, so hopefully that happens at some point and we can skip the scripting step entirely.
@Cldfire @wbkang You're correct there is no way to edit items currently, we're working on designing item editing, it's not as easy as it sounds to make it user friendly
+1 on the need,
this feature is actually required for us to automate some of my workflows.