The Agenda x-callback-url options don’t seem to be able to list projects, which I assume is what you are referring to by “categories”; but I don’t use this app so perhaps I’m wrong on the terminology here?
Assuming the above assertion is correct, it looks like you might need to maintain category lists manually.
The simplest method would be to have a separate action for each category that you modify the entry for in the x-callback-url.
Assuming you are using this action, it utilises the following URL.
You would then modify the
project-title parameter from
Inbox to your alternate project name.
If you want a single action that offers you a list to select from, take a look at the prompt action step, and then use the result tag in your x-callback-url for the project name.
Hope that helps.