can I create extensions to splunk

[alexl1]

in search results under the actions menu, i would like to have a tool that calls a script using what would be exported by the search results

[Drainy · Accepted solution]

Rather than try to modify or inject new functionality into the menus, I would suggest that your best option would be to create a custom search command;
http://docs.splunk.com/Documentation/Splunk/latest/SearchReference/Aboutcustomsearchcommands

That way you could create a search command that does something in particular with the search results it is passed, export, modify, visualize, pass onto something external etc if that is what you were looking for.