I came across this yesterday and added it under "Related Projects" in the README, it looks like a great effort toward a more complete nix-declared MCP config.

I'm not looking to use nix to manage MCP server config files since I'm using another tool I'm working on (https://github.com/eqtylab/mcp-guardian) to manage those right now, so I just wanted a simple repo with easily accessible derivations for individual MCP servers.