{"chain":"base","router":"uniswap","baselineRate":0.0572,"baselineRatePct":5.72,"marginBps":200,"premium":0.058344,"premiumPct":5.8344,"snapshotDate":"2026-10-14","source":"stream-9-zerostorage/tx-rebates-fixture","route":"/api/v1/tx-rebates/quote","sample":true,"cost":"free","paidPriceUsd":"0.003","fieldsIncludedWhenPaid":["chain","router","marginBps"],"note":"Free sample: this preview costs nothing. GET /api/v1/tx-rebates/quote?chain=base&router=uniswap&marginBps=200 charges 0.003 USDC and returns the same shape plus the caller-supplied chain/router/marginBps."}