| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| errors | Package errors implements functions to manipulate errors. |
| github.com/go-kit/kit/transport/http | Package http provides a general purpose HTTP binding for endpoints. |
| google.golang.org/protobuf/proto | Package proto provides functions operating on protocol buffer messages. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| net/http | Package http provides HTTP client and server implementations. |