The Kabuto REST API is available for the Hedera™ Hashgraph Mainnet and Testnet.

https://api.kabuto.sh/v1/
https://api.testnet.kabuto.sh/v1/

In addition, Kabuto is available over gRPC as a Hedera™ Hashgraph managed mirror node. The endpoint is the same as the normal REST API but on the 50211 port.

api.kabuto.sh:50211
api.testnet.kabuto.sh:50211