How to use Zapier "Search Tasks"?

Hello!

We’d like to use the Search Tasks action in Zapier, but there’s no documentation. It takes a single query field, but I don’t know what that field expects.

We’d like to use it to search for all tasks that are in a particular list. I tried using the API docs to construct a query that looked like this {"listIds": {"values":["starting-today"]}} but that just returned a single task (that wasn’t even in the list).

Any help would be greatly appreciated!