Apple Script

NotePlan supports a few Apple Script commands. Here is the list and feel free to request more:

With selectedNoteUrl get the x-callback URL to the currently opened note.

tell application "NotePlan 3"
	set x to selectedNoteUrl
	return x
end tell

With selectedNoteTitle get the title of the currently opened note.

tell application "NotePlan 3"
	set x to selectedNoteTitle
	return x
end tell

Add a new note with addNote with title ... and content ....

tell application "NotePlan 3"
	addNote with title "Hello World" and content "My Content"
end tell