I do a lot of browsing in Private mode and I often want to save the top page to Pinboard without re-opening a new non-private window or logging into Pinboard from a private window. So I wrote a Keyboard Maestro Macro to do just that. I trigger it with a hot key, ⇧^⌥⌘1 and it works even if Safari doesn't have focus.
To use this you need to set your Pinboard API token. This can be found in Pinboard.in > Settings > Password
It’s in large blue letters on the screen and is your username:<longHexString>
There are lots of opportunities to expand on this, but I started simple.
Share & Enjoy!