Comment by cheriot

It's a library design flaw. The agent SDKs focus on an "easy" high level API and hard code all its assumptions (AI SDK, LangGraph, etc). There's no lower level primitives to recompose when you discover your requirements are different than what the library author thought of.

So for now the choice is, "all in one for great prototypes and better hope it has everything you need" or roll your own.

If someone knows of a library that's good for quick prototypes and malleable for power users please share.