Crypto Fear & Greed index — the current market-sentiment score (0-100) and its label (Extreme Fear … Extreme Greed), as a clean snake_case envelope.

Crypto perpetual-futures funding-rate scanner — the top funding rates ranked across ~100 Binance perp markets (rate, 8h %, who-pays-who direction, mark price, next funding time). Spot funding arbitrage and crowded positioning in one call.

Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope.