you can use LFE (Lisp flavored erlang) = lisp on BEAM runtime.

you get a snippet from LLM, compile it to module, and hot-load it into the running node. the module lives in the node's code table, so it persists and every other agent can call it. not just the one that wrote it.

the agents themselves are seaprate supervised processes, so if one crashes - e.g. because the snippet was crap, it doesn't take down whole system.

of course you can do that in just elixir too, the lisp is just cosmetics really.