When I was using an iPhone & mac as my primary tools I had siri create reminders "write a tool which does.." which were synced to caldav & regulary auto-importe

When I was using an iPhone & mac as my primary tools I had siri create reminders "write a tool which does.." which were synced to caldav & regulary auto-imported into my GTD inbox (omnifocus). I really liked this solution since it was reliable. The synced entries were deleted from my phone automatically so I did not have to worry about an endless list of tasks on my phone.