Get Brains

The named brain configurations (v2 §4.7) and current, the brain this account's next run takes. Since owner ruling D8 (2026-10-06) a stored choice no longer changes the brain: every run takes the default unless it asks for the Deep cut with engine: "deep". Only default and selectable configs (E1), and only for a signed-in account; seats and archived brains are never listed. Display id + label only, never model or effort internals. Costs nothing quota-wise. Recover from unknown_brain by reading this list again; for rate_limited or service_unavailable, wait retry_after_sec and retry once.