How to get responsivegrid data using jcr api

Hi @akshaybhujbale ,
You ca iterate nodes. Get ResourceResolver as per your project setup. Get Session from ResourceResolver and iterate nodes. This is just pseudo code.

             Session session=resourceResolver.adaptTo(Session.class);
             Node node=session.getNode("Path to parent node");
                 NodeIterator nodeIterator= node.getNodes();
                 while (nodeIterator.hasNext()){
                     Node child=(Node)nodeIterator.next();
                 }

You can use resource api as well. Once get resource and adaptTo node.