{"uid":"cap_ZoeAEjpEy3zW8CQ_g_D-P","slug":"bitcoin-fee-estimate-mempool-62a1c6fd","name":"Bitcoin Fee Estimate Mempool","description":"Bitcoin fees right now: recommended sat/vB for the next block, 30 minutes, 1 hour and economy, what a typical payment costs in USD, mempool size, tip height, next difficulty adjustment and the BTC price in USD and EUR. Call before sending a Bitcoin transaction.","url":"https://agentsvc.io/api/v1/proxy/btc-fees?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["success","data"],"properties":{"data":{"type":"object","properties":{"btc_usd":{"type":"number"},"mempool":{"type":"object"},"fees_sat_vb":{"type":"object"},"typical_payment_usd":{"type":"object"}}},"success":{"type":"boolean"}}}}}}},"responseSchema":{"type":"json","example":{"data":{},"success":true}},"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_7bl6cdEP2IRYmf70Rchrf","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 fee rates (sat/vB) for next block through economy, typical USD payment cost, mempool size, block tip height, next difficulty adjustment, and BTC price in USD/EUR.","exampleAgentPrompt":"Before I send this Bitcoin payment, what are the current recommended fee rates — specifically for next block, 30 minutes, and economy — and how much would a typical payment cost in USD right now?","exampleUseCases":[{"title":"Pre-send fee check for Bitcoin wallet","prompt":"I'm about to send some Bitcoin — what's the current recommended sat/vB fee to get confirmed in the next block, and what will a typical payment cost in USD?"},{"title":"Economy fee for non-urgent BTC transfer","prompt":"I want to send Bitcoin but I'm not in a rush — what's the economy fee rate right now and roughly how much cheaper is it compared to the next-block rate?"},{"title":"Mempool congestion monitoring for trading bot","prompt":"Check the current Bitcoin mempool conditions for me: how big is the mempool, what's the tip block height, when is the next difficulty adjustment, and what's BTC trading at in USD right now?"}],"resultDescription":"Returns a JSON object with: recommended fee rates in sat/vB for next-block, ~30 minutes, ~1 hour, and economy tiers; estimated USD cost of a typical payment at each tier; current mempool size; latest block height; next difficulty adjustment info; and the current BTC price in both USD and EUR.","failureModes":["Upstream mempool data source unavailable — returns error or stale data","Network timeout if Bitcoin node or data provider is temporarily unreachable","Malformed request body causes 400-level error","x402 payment failure if USDC balance or payment header is missing/invalid"],"whenToPreferThis":"Use this endpoint when an agent needs to make a fee decision before broadcasting a Bitcoin transaction, monitor network congestion in real time, or surface BTC pricing and mempool stats to a user. It consolidates fee tiers, USD cost estimates, mempool size, difficulty adjustment, and BTC price in a single call, avoiding the need to query multiple Bitcoin data sources separately.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:49:32.571Z","isFirstParty":false,"canonicalSlug":"bitcoin-fee-estimate-mempool-62a1c6fd"}