[didibus]

MCP is a JSON-RPC + a fixed auth/discovery handshake + a fixed tool schema protocol for backend endpoints.

Your skills or CLIs still need to call a backend endpoint at some point. MCP is just a standard server JSON-RPC protocol. Having a standard for that is really nice, you get standardize auth, discovery, API shape, etc.

Is it the greatest RPC design ever, no, most annoying is how it's based around a statefull session. But it's really awesome that we have a standard. Otherwise you'd just have a bunch of random servers all doing their own things that you'd have to figure out how they work and all, it would be much worse.