honestly, yes - but MCP includes a really simple 'reflection' endpoint to list the capabilities of an API, with human readable docs on methods and types. That is something that gRPC and OpenAPI and friends have supported as an optional extension for ages, but it has largely been a toy. MCP makes it central and maybe that makes all the difference.
At a previous job most of our services supported gRPC reflection, and exploring and tinkering with these APIs using the grpc_cli tool was some of the most fun I had while working there. Building and using gRPC services in golang left a strong positive impression on me.
