{"uid":"cap_TDhG0kl1CDr2BfPaQAsWX","slug":"sitecheck-btc-fees-bb0af193","name":"SiteCheck BTC Fees","description":"Recommended Bitcoin fees in sat/vB (fastest, 30 minutes, 1 hour, economy, minimum), the mempool's size and count, and what a typical 140 vB transaction costs in BTC and USD. Source: mempool.space; USD from Coinbase spot. Cached 30 seconds. Information only, not financial advice.","url":"https://api.sitecheck-api.workers.dev/api/btc/fees?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"btcUsd":83345.495,"source":"https://mempool.space/api/v1/fees/recommended, https://mempool.space/api/mempool; USD from Coinbase spot","mempool":{"vsizeMvB":39.76,"totalFeesBtc":0.069,"transactions":81442},"checkedAt":"2026-10-14T07:00:19.757Z","disclaimer":"Information only, not financial advice.","feesSatPerVbyte":{"hour":1,"economy":1,"fastest":2,"minimum":1,"halfHour":1},"typicalTransaction":{"vbytes":140,"atEconomy":{"btc":0.0000014,"usd":0.1167,"sats":140},"atFastest":{"btc":0.0000028,"usd":0.2334,"sats":280}}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7VqbqrkExncqDeFOBG6dO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current Bitcoin network fee estimates (sat/vbyte) and mempool statistics, with USD-converted transaction cost examples","exampleAgentPrompt":"What are the current Bitcoin transaction fees — give me the fastest, half-hour, and economy rates in sat/vbyte, and tell me roughly what it would cost in USD to send a typical transaction right now.","exampleUseCases":[{"title":"Timing a low-cost BTC transfer","prompt":"I want to send some Bitcoin but I don't want to overpay on fees — what's the cheapest fee rate I can use right now and still get confirmed within an hour, and how much will that cost me in dollars?"},{"title":"Checking mempool before a crypto payment","prompt":"Before I send out this Bitcoin payment, can you check if the mempool is congested and what the fastest fee is so I know it'll confirm quickly?"},{"title":"Displaying live BTC fees in a wallet app","prompt":"Pull the latest Bitcoin fee recommendations — fastest, half-hour, and economy sat/vbyte rates — along with current mempool size so I can display them to the user."}],"resultDescription":"Returns a JSON object with fee rates for fastest, half-hour, hour, economy, and minimum confirmation targets in sat/vbyte; current BTC/USD spot price; mempool statistics (virtual size in MvB, total fees in BTC, transaction count); and a typical 140-vbyte transaction cost breakdown in BTC, sats, and USD for economy and fastest tiers. Includes data source URLs and a disclaimer.","failureModes":["mempool.space upstream unavailable — stale or missing fee data","Coinbase spot price unavailable — USD conversion fields may be absent or stale","Network timeout from Cloudflare Worker to upstream","Unexpected upstream schema change causing partial data"],"whenToPreferThis":"Choose this endpoint when you need real-time Bitcoin fee estimates with USD cost context in a single pay-per-call request without managing API keys for mempool.space or Coinbase separately. Ideal for agents that need fast fee lookups for Bitcoin transaction planning, wallet UX, or DeFi workflows, especially within an x402 payment-enabled agent stack.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T06:51:50.112Z","isFirstParty":false,"canonicalSlug":"sitecheck-btc-fees-bb0af193"}