{"uid":"cap_FV5FWZPpmcV53W-Rlyl0Y","slug":"btc-node-fee-estimator-375d2e2a","name":"BTC Node Fee Estimator","description":"Fee estimate for ANY target block (1-1008) — flat $0.001 per call, USDC on Base, no signup.","url":"https://btcnode.uk/api/fees/estimate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__o6TEPbVtDhkOXWCyJSPq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a Bitcoin transaction fee estimate for any target confirmation block from 1 to 1008","exampleAgentPrompt":"What's the current Bitcoin fee estimate if I want my transaction confirmed within 6 blocks — give me the sat/vbyte rate from btcnode.uk.","exampleUseCases":[{"title":"Urgent Bitcoin payment fee check","prompt":"I need to send Bitcoin right now and want it confirmed in the next block — what fee rate in sat/vbyte should I set?"},{"title":"Economy fee for non-urgent transfer","prompt":"I'm moving some BTC and I'm not in a rush — what's the cheapest fee estimate if I'm okay waiting up to 144 blocks for confirmation?"},{"title":"Automated wallet fee suggestion","prompt":"My app is sending a Bitcoin transaction and needs to auto-set the fee — can you fetch the recommended sat/vbyte rate for a 6-block confirmation target?"}],"resultDescription":"Returns a fee rate estimate (typically in sat/vbyte) appropriate for getting a Bitcoin transaction confirmed within the specified target number of blocks, sourced directly from a live Bitcoin Core node's fee estimation engine.","failureModes":["Invalid block target outside 1-1008 range returns an error","Bitcoin Core node temporarily unavailable causes timeout or 503","Insufficient mempool history for accurate estimate at extreme block targets (e.g. 1008) may return a fallback or error","Payment not received (402) if USDC on Base is not provided"],"whenToPreferThis":"Choose this endpoint when you need real-time Bitcoin transaction fee estimates sourced directly from a live Bitcoin Core node, especially if you want flexible confirmation-window targeting (any value from 1 to 1008 blocks). Prefer it over mempool.space scrapers or indirect APIs when you want low-cost ($0.001/call), no-signup, programmatic fee lookups with a wide range of block targets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T01:32:10.144Z","isFirstParty":false,"canonicalSlug":"btc-node-fee-estimator-375d2e2a"}