{"uid":"cap_GbLWPDCVLA1aM-jexSOBX","slug":"btcnode-uk-9a32dbdd","name":"btcnode.uk Bitcoin Mempool Status","description":"Mempool congestion: pending tx, size, usage — flat $0.001 per call, USDC on Base, no signup.","url":"https://btcnode.uk/api/mempool?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"mempool_mb":"85.3","pending_tx":42000}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{}}},"response":{"success":true,"mempool_mb":"20.43","pending_tx":44779}},"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/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_vFF6ldm20aFO9F_t2sMUv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live Bitcoin mempool statistics from a full node including pending transaction count, mempool size in MB, and congestion level","exampleAgentPrompt":"What does the Bitcoin mempool look like right now — how many transactions are pending, how big is it in MB, and is the network congested?","exampleUseCases":null,"resultDescription":"Returns live Bitcoin mempool data from a real Bitcoin Core node: the count of unconfirmed pending transactions, total mempool size in megabytes, and a congestion level indicator to help assess whether the network is busy or clear.","failureModes":["Node temporarily offline or syncing — returns 5xx error","Network congestion causing delayed response","Stale data if node is behind chain tip","Rate limit exceeded for repeated calls within short window"],"whenToPreferThis":"Use this endpoint when you need real-time Bitcoin mempool status from a live full node rather than a third-party aggregator — ideal for agents making fee decisions, timing transaction submissions, or monitoring network congestion programmatically. Prefer this over general blockchain APIs when you specifically need mempool depth and congestion signals.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T12:57:00.891Z","isFirstParty":false,"canonicalSlug":"btcnode-uk-9a32dbdd"}