Provides information about your concrete5 site through an easy to use, well documented api. This allows for easier sso connect for 3rd party developers, and offers opportunities for using one c5 site to pull information from another. Responses are JSON formatted, and documentation is installed with the package. You must have public profiles anabled to use this addon.
There is a single page installed at yousite.com/index.php/api/docs that provides documentation to api users. You may want to link to this page.