A series of endpoint that provide a high level overview of all the different pools, operators, withdrawal/deposit addresses and validator indexes that form the infrastructure layer of Ethereum
The Rated API enables users to query into key metrics of pre-materialized entities. This works pretty much as hinted by the Rated Explorer, but with a much higher degree of flexibility in terms of time-frames, and granularity in terms of metrics.
A validator is a virtual entity that lives on Ethereum and participates in the consensus of the Ethereum protocol. Validators are represented by a balance, public key, and other properties.