{"sample":true,"example_data":true,"note":"Static example with the real response shape of /perps/{symbol}. Not live data; values are illustrative and do not change. The live route is paid per call via x402 (USDC on Base, eip155:8453); no account, no API key, no subscription.","paid_route":{"method":"GET","path":"/perps/{symbol}","url":"https://cryptofeed402.site/perps/BTC","price":"$0.002","currency":"USDC","network":"eip155:8453","payment":"x402"},"symbol":"BTC","as_of":"2026-10-20T00:00:00.000Z","generated_at":"2026-10-20T00:00:00.000Z","venue":"hyperliquid","mark_px":100000,"oracle_px":100020,"mid_px":100005,"premium":-0.0002,"premium_pct":-0.02,"change_24h_pct":0.41,"funding":{"rate_hourly":0.0000125,"rate_8h":0.0001,"annualized_pct":10.95,"interval_hours":1,"side_paying":"longs"},"open_interest":{"coins":30000,"usd":3000000000},"volume_24h_usd":2000000000,"max_leverage":40,"impact_px":{"bid":99990,"ask":100015},"funding_extreme":{"in_top10":false,"rank":23,"ranked_universe":70,"rule":"Hyperliquid perps with >$1M 24h volume ranked by |annualized funding| (same list as /funding/extreme)","top10":["EXAMPLEA","EXAMPLEB","EXAMPLEC"]},"venues":[{"venue":"hyperliquid","symbol":"BTC","funding_rate":0.0000125,"funding_interval_hours":1,"funding_apr_pct":10.95,"open_interest_usd":3000000000,"mark_px":100000}],"not_included":{"liquidation_clusters":"Hyperliquid's public info API has no aggregate liquidation or liquidation-level data, so this route does not estimate liquidation clusters."},"source":"Hyperliquid public info API (metaAndAssetCtxs), cached up to 30s; as_of = upstream fetch time","disclaimer":"Automated data for AI agents. Not financial advice."}