{"sample":true,"free":true,"note":"Static example of the paid response shape (not live data). Drop sample=1 and pay via x402 for live data. Failed calls (4xx/5xx) are never charged.","path":"/crypto/hl-book","price_usdc":"0.005000","pay_url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/hl-book?coin=BTC","input_schema":{"type":"object","properties":{"coin":{"type":"string","enum":["BTC","ETH","SOL"],"description":"Perp coin (default BTC)","examples":["BTC","ETH","SOL"]},"depth":{"type":"integer","minimum":1,"maximum":20,"description":"Levels per side (default 5)"}},"additionalProperties":false},"example":{"coin":"BTC","venue":"hyperliquid","updated_at":"2026-10-28T11:00:00Z","best_bid":80860,"best_ask":80861,"mid":80860.5,"spread_bps":0.124,"bids":[{"px":80860,"sz":1.2,"n":4}],"asks":[{"px":80861,"sz":0.8,"n":3}],"sources":["https://api.hyperliquid.xyz/info"]},"start_here":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"}