A little more on shortcuts since I think they're cool.
EDIT: I got x-callback-url to work, just make sure the url is properly encoded.
Using a shortcut that simply does Save [Clipboard] To [Photo Album], this url should work and calls back to FM automatically.
shortcuts://x-callback-url/run-shortcut?name=NAME OF SHORTCUT&input=clipboard&x-success=fmp19://$/FILENAME%20ENCODED&x-cancel=fmp19://$/FILENAME%20ENCODED&x-error=fmp19://$/FILENAME%20ENCODED