From their README

From then on, 1p will show your items. ↵ opens the website in your browser (and fills the credentials if you have the browser extension installed) while ⌘↵ opens the item in 1Password.

The Workflow will attempt to detect when you update items in 1Password and present you with the option to refresh them. You can disable this behaviour by flipping the auto_refresh Workflow Environment Variable to 0. Set logins_only to 1 if you want to hide other item types. Set hostnames_only to 0 if you want to see full URLs in results.

Uncommon but useful actions, such as toggling vaults, can be accessed via :1pextras.

!gddiagnostic inspects the current Workflow configuration. It is to be run when asking for help.

⤓ Download Workflow