This is schemaless. Protobufs require a .proto file that describes the data being serialized. A .proto file serves a similar purpose as the `struct` keyword i

This is schemaless. Protobufs require a .proto file that describes the data being serialized. A .proto file serves a similar purpose as the `struct` keyword in C. MessagePack uses type prefixes to describe the data. For instance an unsigned 8-bit int starts with a `0xcc` followed by a byte.