This REST API provides programmatic access to data from Hackaday.io. Read project data, user profiles, comments, pages, search and more using the API. The authorization to access the API is via the open standard for authorization OAuth. The responses are available in JSON.
Check out dev.hackaday.io, and register your app here.
I tried to login with Hackaday and I got 'Error: unable to get local issuer certificate'.