I should start to develop my own as one of the issues anyone has with 3rd party APIs is that we have no control over said API, creating an interdependent relationship with it.
For now my Brazilian Content Supporter bot temporarily stopped calculating delegations. But at least I prepared a checkpoint from where to start recalculating once Keychain API gets back online.
If you have a spare vote...
Vote for me as your Hive Witness
If you want to support Brazilian creators...
Vote curator @perfilbrasil for Hive Witness
Delegations to 
@perfilbrasil are rewarded here.
@perfilbrasil are rewarded here.