The RatedAPI allows you to aggregate stats on validator indices on-the-fly. Head on over to Aggregating validator indices to learn more.
Validators
Validators
Querying into individual validator indices or aggregations of validator indices.
The Validators class is the lowest order of aggregation that the Rated API supports. The effectiveness endpoint returns you all kinds of useful information (e.g. rewards, performance etc) about a specific validator index, in the requested time-frame.