You could make a view of your nodes then use [Views Datasource][1] > Views Datasource is a set of plugins for Drupal Views for rendering > content in a number of shareable, reusable formats based on XML, JSON > and XHTML. For how to use, see the accepted answer to this [Views JSON output](http://drupal.stackexchange.com/questions/60499/views-json-output) [1]: http://Views%20Datasource