devot:eeDevoted to ExpressionEngine

{exp:json_output:entries channel="news"}

json_output:entries is a single tag, not a tag pair. Use channel:entries parameters to filter your entries.

This outputs:

[{"title":"About Us","url_title":"about_us","entry_id":"155","channel_id":"2","author_id":"1","status":"open","entry_date":"1287508538","edit_date":"20101209122240","expiration_date":"0","about_body":"We are the greatest.","about_image":"","about_staff_title":"Joe","about_extended":"More about us.","color":"d12626"},{"title":"Contact Us","url_title":"contact_us","entry_id":"223","channel_id":"2","author_id":"1","status":"open","entry_date":"1291918929","edit_date":"20101209122310","expiration_date":"0","about_body":"Email us.","about_image":"","about_staff_title":"Bob","about_extended":"","color":"080480"}]

Note:

 
• Not tested with categories, Matrix and Playa yet!
 
• Doesn’t seem to work with nested relationships

Do thoroughly test this plugin on a local or development server before using it on a production/live server!
Since this plugin only outputs data I don’t expect any damage but I will not accept any liability for any problems risen from using this plugin.