Module browser, project metadata

I am currently working on the module browser, this is an Drupal 7 module which will provide users with a front-end list to easily install modules, themes, etc (watch a screencast of our proof of concept here).

The module should work together with d.o. The ground idea being d.o. providing a list of available (downloadable) modules and relevant metadata to the browser through a service i.e. xmlrpc (or something more suitable). The module browser needs to know which datafields are defined in such a list in order to function properly.

I have already configured a drupal setup with the project module and studied the tables. But I would like to be sure about possible available metadata, I was wondering if I could receive a dump of an existing module entry or just a few lines from the following tables (preferably from one project):
node, node_revisions, project_projects, projects_release_node, project_release_supported_versions, project_usage_day, project_usage_raw, project_usage_week_project, project_usage_week_release

I am also going to organize a BOF about this project on DrupalCon SF.