A playground's run rail — every request with the model and knobs it was sent with, pinned favourites kept above the churn, one click to load a run back into the editor, and a confirmation when that would overwrite your draft.
npx shadcn@latest add @zyeon/request-historyZyeon UI limits how often it can be asked, and Request History hasn't had its turn. Its source will show here once it has.