building three mcp servers in rust with rmcp

Mon, 30 Mar 2026 00:00:00 +0000

i wanted to ask an llm “is my server on fire?” without ssh-ing into the box, running htop, squinting, giving up, and running docker ps instead. i wanted it to just know — pull the cpu number, list the containers, hit prometheus, and tell me in a sentence.

the model context protocol makes that possible. you hand an llm a set of tools, it decides when to call them. fine. so i built one server for my infra. then i wanted one for spanish government open data — the boe, the tax calendar, the property registry. then a third for formula 1 telemetry, because it’s my blog and i do what i want.

three servers. and i could already see the future: three near-identical binaries, three copies of the same http-client boilerplate, three subtly different cache bugs. the copy-paste tax.

llm on krtffl.dev

building three mcp servers in rust with rmcp