How do you do that practically/reliably? Would be great to just paste a link to the SDK Github repo, but doesn't seem to work (yet) in my experience
That's all it takes to get reliably excellent results. It's not perfect, but, at this point, 90% hallucinations on normal SDK usage strongly suggests poor usage of what is the current state of the art.
I've even had luck simply dropping an entire OpenAPI spec into my repo and adding the file to the context window (also using the @ command).