Comment by tstrimple

I think this boils down to more discoverability of the entire API. While I'm not a fan of GraphQL necessarily, it does provide the tools for very robust LLM usage typically because of the discoverability and HATEOAS aspects they actually follow compared to most "REST" APIs. I would love if LLMs could learn everything they need to about an API just by following links from its root entry point. That drastically cuts down on the "ingested knowledge" and documentation reads (of the wrong version) it needs to perform. Outdated documentation can often be worse than no documentation if the tool has the capability of helping you "discover" its features and capabilities.