The method within core.php of the JSON API plugin for Wordpress. The core.php file is located within "json-api/controllers"

core.php

public function get_recent_summary() {
    global $json_api;
    $posts = $json_api->introspector->get_posts();
    $output = array();
    
    foreach ($posts as $post){
      $post_summary["id"] = $post->id;
    	$post_summary["url"] = $post->url;
    	$post_summary["title"] = $post->title;
    	$post_summary["date"] = $post->date;
    	$post_summary["author"] = $post->author->name;
    	$post_summary["thumbnail"] = $post->attachments[0]->images["thumbnail"]->url;
    	$output[] = $post_summary;
    	
    }
            
    return $this->posts_result($output);
  }

You rock!

Thanks. This this helped me out big time!

Just perfect! thanks

how do you do this if you have to login first before the json api will return the data?