{"sample":true,"note":"Static example of what /btc-fees returns; not live data and not charged. Call without sample=1 and pay $0.002 with any x402 client for a live result.","tool":"/btc-fees","price":"$0.002","example":{"network":"bitcoin","unit":"sat/vB","fees":{"nextBlock":4,"halfHour":3,"hour":1,"economy":1,"minimum":1},"typicalPaymentSats":{"nextBlock":564,"hour":141},"typicalPaymentVbytes":141,"source":"https://mempool.space/api","limitations":["Estimates do not guarantee confirmation time","141 vB is an illustrative one-input/two-output SegWit size; actual transaction size varies","Source endpoints are fetched concurrently, not as an atomic snapshot"],"mempool":{"transactions":83832,"vsize":42066150,"totalFeesBtc":0.1093664},"blockHeight":970000,"checkedAt":"2026-10-01T00:00:00.000Z"}}