Prototype our chosen RPC implementation
Having designed a basic RPC implementation (#740 (closed)), we should build a prototype of it, to answer these questions:
- Is it actually easy for us to provide? (If we have to write a lot of code for each exposed API, we are doing it wrong.)
- Is it actually easy to use? (There's no point if nobody wants it.)
It doesn't need to be feature-complete at this point, but there should be enough there that integrators can try it out.