Scores are calculated using data from a project: forum posts, commits, comments, and more.
Each project community sets the values, priorities, weights, and norms.
You can see what every score is, and more importantly, why.
SourceCred is built around a plugin architecture. You can extend it to track any kind of contribution.
There's no "CredHub"; just an open-source system that anyone can set up and use.
Scores are a blend of objective data and subjective judgement.