Depending on use case, would start with just solid HTTP APIs, then a simple CLI to consume them, then add MCP using the new spec. Build slowly only adding new access protocols as needed.

Be surprised how far apps can get with just solid & well documented APIs. Modern agents are smart!

My suggestion is to just let the HTTP client itself be the MCP server.

Then you don't need an MCP server per service anymore, you just need one and a whitelist of authorized services.