Hey,
had some fun on non serious project GitHub - alexkutsan/Hallucirest: Web server, with runtime controlled by LLM powered by MCPs (web server, with runtime fully controlled by LLM)
And created shard that could be useful for others as well GitHub - alexkutsan/AgentKit: Crystal library for building AI agents with MCP (Model Context Protocol) support.
This is an LLM agent loop with support of MCP servers