Can we recover or restore artifacts from Recycle Bin using WSAPI ?
You can not restore or recover artifacts from the Recycle Bin using WSAPI. You must be logged into the product and do that interactively. You can, however, permanently delete artifacts from the Recycle Bin using WSAPI.
Here is the RecycleBinEntry REST Endpoint. We can see its supported methods.
Note, the 'Delete' method will permanently delete the artifact. There is no way to Restore an artifact.