Configuration - emacs-citar/citar GitHub Wiki
Changing the actions citar displays for a key
To control which actions are offered by the citar UI, you need to customize the citar-open-resources
variable, whose default value is (:files :links :notes :create-notes)
.
For example, if you don't want links to be shown, add the following to your configuration:
(setq citar-open-resources (:files :notes :create-notes))