{"uid":"cap_VaH8AOgcwQvbNNZBaHdfU","slug":"bitcoin-network-fee-estimates-mempool-size-aa264680","name":"Bitcoin Network Fee Estimates & Mempool Size","description":"Live Bitcoin fee estimates (sat/vB) + mempool size — on-chain congestion signal. Live. Returns JSON.","url":"https://clonecho.builda.company/x402/btc-network","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bS5V7pyLPltmZNJTf5uyh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live Bitcoin fee estimates in sat/vB and current mempool size as an on-chain congestion signal.","exampleAgentPrompt":"What's the current Bitcoin fee rate in sat/vB and how congested is the mempool right now? I want to know if it's a good time to send a transaction.","exampleUseCases":null,"resultDescription":"A JSON object containing live Bitcoin fee estimates expressed in satoshis per virtual byte (sat/vB) across priority tiers (e.g. fast, medium, slow) and the current mempool size, enabling on-chain congestion assessment.","failureModes":["Upstream Bitcoin node or mempool data source unavailable — may return 5xx or stale data","Payment not processed (402 Payment Required) if x402 header is missing or insufficient","Rate limiting if called too frequently without valid payment"],"whenToPreferThis":"Use this endpoint when you need a real-time, low-cost snapshot of Bitcoin network fees and mempool congestion, especially before broadcasting a transaction or building a fee-estimation feature. Prefer this over blockchain explorer APIs when you want a single JSON call with both fee rates and mempool size together at a fixed $0.01 USDC cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:17:17.216Z","isFirstParty":false}