Search Firefox bookmarks
Search Firefox browsing history
Run bookmarklets
Activate & close tabs
Add you own custom scripts
The workflow requires you to install a corresponding Firefox extension in order to communicate with Firefox.
After installing the workflow, run ffass > Install Firefox Extension to get the extension. Once the extension is installed, everything should just work.
The workflow is fairly customisable. You can add your own URL actions via scripts, set custom icons, and assign URL & tab actions and bookmarklets to alternate hotkeys.