Simple site to query how many stars a user has across all their public repos.
Uses the List repositories for a user API and aggregates all the stargazers_count values.
An example for this API: https://api.github.com/users/nikouu/repos however check out the code in index.html for pagination, as the API will return 30 by default with no pagination.
The site doesn't use a key, so it's up to the mercy of the rate limiting free GitHub API.