[veyron]

You can't see all repos for which you have commit access. (e.g. if you are in an organization, you have to query the organization to get the fact that you are a contributor)

Go to https://api.github.com/users/your_user_here/repos to see what repos are accessible.

NOW: it is possible to iterate through all of the repos in Github and build it up, but that's far too much legwork and would need to be run continually.