{"uid":"cap_FNpeX6yxOx5sOU2S2AYp7","slug":"bitcoin-mempool-fee-estimator-af1607a4","name":"Bitcoin Mempool Fee Estimator","description":"Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache.","url":"https://data.greeneris.io/v1/btc/fees","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","properties":{"include":{"enum":["difficulty"],"type":"string","description":"Add difficulty retarget estimate (optional)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"source":"mempool.space (live mempool snapshot)","fees_sat_per_vb":{"hour":1,"economy":1,"fastest":2,"minimum":1,"half_hour":1},"difficulty_adjustment":{"progress_percent":11.06,"remaining_blocks":1793,"remaining_time_ms":1093000000,"difficulty_change_percent":-2.74,"estimated_retarget_date_ms":1753728000000}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vriOOKm-RIUqiw3HqkOcP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current Bitcoin network fee rates (sat/vB) for different confirmation speeds, plus optional difficulty adjustment data, sourced live from mempool.space","exampleAgentPrompt":"What are the current Bitcoin mempool fee rates — fastest, half-hour, hour, economy, and minimum — and also include the difficulty adjustment estimate?","exampleUseCases":[{"title":"Wallet fee estimation for transactions","prompt":"I'm about to send some Bitcoin. What's the current fastest and economy fee rate so I can choose between quick confirmation and saving on fees?"},{"title":"Monitor network congestion trends","prompt":"Check the Bitcoin network fees right now and tell me if it's congested or if I should wait before broadcasting my transaction."},{"title":"Schedule transaction timing strategically","prompt":"What are today's Bitcoin sat/vB rates for hour-long confirmation, and when does the difficulty adjustment happen next? I want to time my transaction well."}],"resultDescription":"A JSON object with fee rates in sat/vB for five confirmation speed tiers (fastest, half_hour, hour, economy, minimum), sourced from a live mempool snapshot. When the optional `include=difficulty` query param is provided, also includes difficulty adjustment data: progress percent, remaining blocks, remaining time in ms, estimated difficulty change percent, and estimated retarget date as a Unix timestamp in ms.","failureModes":["HTTP 402 returned if payment not provided — includes machine-readable USDC quote for x402 protocol payment","mempool.space upstream outage may cause stale or unavailable data","Invalid query parameter value for `include` field returns an error","Network timeout if Bitcoin node data is temporarily unavailable"],"whenToPreferThis":"Use this endpoint when you need real-time Bitcoin fee rate data for transaction construction, wallet fee estimation, or monitoring network congestion. It is particularly useful for AI agents that need to pay or broadcast Bitcoin transactions and want to select the appropriate fee tier. Prefer this over on-chain analysis tools when you need a quick, cheap ($0.001) per-call lookup with no account setup required, paying via x402/USDC on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:50:31.115Z","isFirstParty":false}