{"slug":"api-usenami-io-v1-orderbook-venue-symbol-top-a9a8e7","title":"Top-of-book for one crypto perpetual on one venue — best bid, best ask and the s","host":"api.usenami.io","method":"GET","resource":"https://api.usenami.io/v1/orderbook/:venue/:symbol/top","category":"market","description":"Top-of-book for one crypto perpetual on one venue — best bid, best ask and the spread between them. Covers CEX and DEX perp venues: Binance, Bybit, OKX, Hyperliquid, Paradex, Drift and others.","price_listed":0.001,"price_asked":null,"state":"no_terms","state_label":"Answers HTTP 410 without x402 payment terms","checks_7d":1,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","pathParams":{"symbol":"BTC","venue":"hyperliquid"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"method":{"type":"string"},"pathParams":{"type":"object"},"type":{"type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":410,"valid_402":false,"asked_usdc":null,"price_match":null,"latency_ms":737,"error":null}],"description_full":"Top-of-book for one crypto perpetual on one venue — best bid, best ask and the spread between them. Covers CEX and DEX perp venues: Binance, Bybit, OKX, Hyperliquid, Paradex, Drift and others.","last_updated":"2026-09-01T12:05:40.486Z","schemes":["exact"]}