Real-time crypto derivatives signals for BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT-USD: perpetual futures funding rate (raw + annualized), open interest and 1h change, basis (perp vs index), funding-rate trend. Live data from Bybit/OKX via Kronos market_signals. Pay-per-call via x402.