This is a project to create a JSON-based REST API for WordPress. This project is run by Ryan McCue and is part of the WordPress 2013 GSoC projects.
As a Plugin
Drop this directory in and activate it. You need to be using pretty permalinks to use the plugin, as it uses custom rewrite rules to power the API.
As Part of Core
Note: These instructions will likely be broken while in development. Please use the plugin method instead.
wp-json.php into your WordPress directory, and drop
class-wp-json-server.php into your
wp-includes/ directory. You'll need
PATH_INFO on your server, but you don't need pretty permalinks
All tickets for the project are being tracked on the GSoC Trac. Make sure you use the JSON REST API component.