{"preview":true,"venue":"Binance","ticker":"BTC","rate":0.000065,"updated_at":"2026-09-06T19:30:00+00:00","note":"Free sample — Binance/BTC, rate rounded + timestamp bucketed. Paid call returns exact, real-time, multi-venue data.","paid_full_endpoint":"GET /v1/funding/current?symbol=BTC ($0.001 USDC via x402) — returns ALL venues, fresh."}