{"uid":"cap_V2U7ToUtVVgwR0Qe9QI-2","slug":"2s-btc-fee-estimator-5af9a441","name":"2s BTC Fee Estimator","description":"The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys, and upto billing: pay actual usage, not the quote.","url":"https://2s.io/api/crypto/btc-fees","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"0.0025","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0025","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fVAGQIbepA3edl7_NYcSB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0025","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time Bitcoin mempool statistics and recommended fee rates (sat/vByte) across priority tiers","exampleAgentPrompt":"What's the current Bitcoin fee rate — specifically what sat/vByte should I use to get confirmed within the next 30 minutes, and how congested is the mempool right now?","exampleUseCases":null,"resultDescription":"Returns a JSON object containing current Bitcoin mempool stats (transaction count, virtual size in bytes, total fees in satoshis) and recommended fee rates in sat/vByte for five priority tiers: fastest, half-hour, hour, economy, and minimum. Also includes source attribution from mempool.space.","failureModes":["Upstream mempool.space API unavailable — stale or empty data returned","Network timeout — agent should retry","Payment not received — 402 response returned, no data","Mempool data momentarily inconsistent during high-congestion spikes"],"whenToPreferThis":"Use this endpoint when an agent needs real-time Bitcoin fee estimates and mempool health without managing API keys or accounts. Prefer over direct mempool.space calls when operating in an x402 pay-per-call environment. Ideal for wallets, payment bots, or any agent sending BTC transactions and needing to pick an appropriate fee tier.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:00:36.379Z","isFirstParty":false}