months after i uninstalled 1Password something was still spamming my log files.

It seemed like launchd has some problems, so i headed over one of the following folders
/System/Library/LaunchDaemons
/System/Library/LaunchAgents
/Library/LaunchDaemons
/Library/LaunchAgents
~/Library/LaunchAgents
I found this entry
ws.agile.1PasswordAgent.plist
let's delete it and refresh launchd
launchctl remove ws.agile.1PasswordAgent
and the problem has gone.