{"uid":"cap_37eheom0suo_W1SW435-L","slug":"btc-mempool-snapshot-e3aa906c","name":"BTC Mempool Snapshot","description":"Live Bitcoin mempool snapshot: unconfirmed transaction count, total virtual size and total fees, a fee-rate histogram broken into buckets, and an estimated block backlog. Informational, not advice.","url":"https://payai.agentstools.dev/btc/mempool","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EI3iweL8aGXFA68rACvY9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a live Bitcoin mempool snapshot including unconfirmed transaction count, total virtual size, total fees, a fee-rate histogram, and estimated block backlog.","exampleAgentPrompt":"What does the Bitcoin mempool look like right now — how many unconfirmed transactions are there, what are the fee rates, and how many blocks of backlog are we looking at?","exampleUseCases":[{"title":"Optimal fee timing for Bitcoin send","prompt":"Before I send this Bitcoin payment, can you check the current mempool and tell me what fee rate I should use to get confirmed in the next block or two?"},{"title":"Mempool congestion alert dashboard","prompt":"Pull the live Bitcoin mempool snapshot for me — I want to see unconfirmed tx count, total fees, and the fee-rate histogram to assess how congested the network is right now."},{"title":"Block backlog estimation for settlement","prompt":"How backed up is the Bitcoin mempool right now? I need to know the estimated block backlog and total virtual size to figure out when a pending payment might settle."}],"resultDescription":"A JSON object containing: count of unconfirmed transactions, total virtual size (vbytes) of pending transactions, total fees (satoshis) in the mempool, a fee-rate histogram bucketed by sat/vbyte ranges, and an estimated number of blocks needed to clear the current backlog.","failureModes":["Network or upstream Bitcoin node unavailability returns a 5xx error","Payment not included or malformed x402 payment header results in 402 response","Rate limiting may occur on excessive polling, returning 429","Mempool data may be slightly stale if upstream node is catching up"],"whenToPreferThis":"Choose this endpoint when you need a structured, machine-readable live snapshot of Bitcoin mempool conditions — including fee histograms and block backlog estimates — in a single low-cost call. Prefer it over block explorer scraping or full-node RPC when you need a clean JSON feed without infrastructure overhead. It is best for fee estimation, congestion monitoring, and settlement timing use cases.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:57:46.224Z","isFirstParty":false}