I just fell Claude "there's an LLM server on this port serving this model, use it as a subagent"

Claude will write some scripts to call the LLM API and use it like any other tool.

I haven't found a pressing need for anything more complex than that. My multi-agent setups tend to be a pile of bespoke scripts per project anyway, an MCP server is only gonna get in the way. But I suppose this is because I self-host the models, if you're using OpenRouter or whatever it may need more complexity than a curl call to an unauthenticated port