good idea or bad idea

test.proto

syntax = "proto3";

import "google/api/annotations.proto";

package dsproto;

service Admin {
  rpc Set (SetMessage) returns (ValueResponse) {
    option (google.api.http) = {
      post: "/v1/dsproto/set"
      body: "*"
    };
  rpc Get (GetMessage) returns (ValueResponse) {
    option (google.api.http) = {
      post: "/v1/dsproto/get"
      body: "*"
    };
  }
}

service Read {
  rpc Get (GetMessage) returns (ValueResponse) {
    option (google.api.http) = {
      post: "/v1/dsproto/get"
      body: "*"
    };
  }
}

message SetMessage {
  string Key = 1;
  bytes Value = 2;
}

message ValueResponse {
  bytes Result = 1;
}

message GetMessage {
  string Key = 1;
}