Version 160 of Hook software integration is now available, with support for calibre - E-book manager (an open source app by Kovid Goyal). This software integration is courtesy of @Patrick : Using Hook with Calibre for creating a hook to a book - Share your Hook scripts - Hook Productivity Forum
How to get the updated integration
Hook’s automatic software update (if enabled) automatically updates Hook’s integration scripts without you needing to relaunch Hook. Using Hook’s
Check for App Updates and Update Scripts command also updates the scripts, without you needing to relaunch Hook.
Also discussed on Twitter.