Liquidation pressure feed: 5-second buckets per symbol of long and short USD liquidated across venues, the dominant side and pressure against the symbol's own baseline, from a gap-free cursor. Use when you need to answer: Which side is being liquidated across venues right now, and how hard compared with normal? One call per 5 s, 10 s on a pass. Heavy pollers: $1 day pass, /api/keys/buy-day-pass.