A small C++ library for sending structured commands and telemetry between devices — no schema files, just add your parameters and serialize

If you've ever tried to build a simple command/telemetry protocol between a PC and a fleet of SDR receivers, sensors, or embedded devices, you know the usual options aren't great:

Roll your own binary format — fast, but you end up writing and maintaining custom serialization code for every device type, and debugging mismatched structs across machines is painful.

Protobuf / FlatBuffers — robust, but require you to define your message layout in a schema file upfront, run a code generator as part of your build, and commit to a fixed structure. Adding a new device type or a new parameter means editing the schema, regenerating, recompiling everything.

JSON over the wire — easy to debug, but heavy for anything real-time or bandwidth-constrained.

I ran into this while working on a multi-SDR receiver system and ended up writing MessageFrame — a small C++17 library that lets you build structured messages dynamically, without any schema files or code generation.