| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| google.golang.org/grpc/metadata | Package metadata define the structure of the metadata supported by gRPC library. |
| google.golang.org/protobuf/encoding/protojson | Package protojson marshals and unmarshals protocol buffer messages as JSON format. |
| google.golang.org/protobuf/proto | Package proto provides functions operating on protocol buffer messages. |
| log/slog | Package slog provides structured logging, in which log records include a message, a severity level, and various other attributes expressed as key-value pairs. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |