Sometimes only a subset of the response items are required, several endpoints support this via the where query parameter.
The where parameter allows you to provide one or more clauses defining what items you want to see in the response. The http://localhost:8080/alfresco/api/-default-/public/alfresco/versions/1/nodes/-my-/children?where=(isFile=true) request shows how you can limit the nodes in your home folder to just the files.
The where parameter is specific to each endpoint so you’ll need to consult the API Explorer to see firstly, whether the where parameter is supported and secondly, what expressions and clauses can be used.