<service_name> corresponds to the api_service_name option that is defined in the respective .proto file.
For example, requests to TokenExchangeService from the iam API package must be sent to .
For the complete list of services and their endpoints, see Services and their endpoints on GitHub.
OperationService endpoint
OperationService from thecommon API package does not have its own endpoint. It represents an operation as a result of some action in any service. For example, creating a VM or changing settings of a Managed Service for Kubernetes® cluster both return an operation.
Use the same endpoint for OperationService as the service that initiated the operation.
For example, if you performed an operation on a disk by using DiskService from the compute API package, use to check that the operation is successful.