I rather build an API around my search index rather than call it directly from A...

Scottopherson · on July 2, 2014

Their Kibana dashboard is just an Angular app that calls ES directly: http://www.elasticsearch.org/overview/kibana/

"NOTE: Kibana 3 talks directly to Elasticsearch from the browser. This means that your browser communicates directly with Elasticsearch, not via an intermediary. You may wish to configure a reverse proxy to restrict access to Elasticsearch."