{"uid":"cap_6239_PTy7YBktbbilVHPL","slug":"fastx402-bitcoin-fee-rates-8e1bb6e2","name":"FastX402 Bitcoin Fee Rates","description":"146 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.","url":"https://fastx402.tools/btc-fees?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"network":{"type":"string","description":"Bitcoin network to query: main, testnet3 or testnet4. Defaults to main."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"mempool":{"type":"object","properties":{"vsize":{"type":"integer"},"transactions":{"type":"integer"},"total_fee_sat":{"type":"integer"}}},"network":{"type":"string"},"fee_rates_sat_vb":{"type":"object","properties":{"economy":{"type":"integer"},"fastest":{"type":"integer"},"one_hour":{"type":"integer"},"thirty_minutes":{"type":"integer"}}}}}}}}},"responseSchema":{"type":"json","example":{"mempool":{"vsize":30000000,"transactions":5000,"total_fee_sat":61234567},"network":"main","fee_rates_sat_vb":{"economy":10,"fastest":20,"one_hour":15,"thirty_minutes":17}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uA3eiYAsAiEHJYaC5FIOK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","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/vbyte) and mempool statistics for main, testnet3, or testnet4","exampleAgentPrompt":"What are the current Bitcoin fee rates on mainnet — I need economy, 30-minute, 1-hour, and fastest sat/vbyte estimates, plus mempool size?","exampleUseCases":[{"title":"Optimal fee before sending Bitcoin","prompt":"Before I send this Bitcoin transaction, what fee rate should I use to get confirmed within 30 minutes on mainnet? Give me the sat/vbyte estimate."},{"title":"Mempool congestion dashboard","prompt":"How congested is the Bitcoin mainnet mempool right now? I want to know how many transactions are waiting, the total vsize, and the current fee rates."},{"title":"Testnet fee check for development","prompt":"What are the current fee rates on Bitcoin testnet4 — I need economy and fastest sat/vbyte values for testing my wallet app."}],"resultDescription":"A JSON object containing the queried network name, fee rates in sat/vbyte for four confirmation tiers (economy, thirty_minutes, one_hour, fastest), and mempool statistics (total vsize in bytes, transaction count, and total fees in satoshis).","failureModes":["Invalid 'network' parameter value returns an error (accepted values: main, testnet3, testnet4)","Payment not provided or insufficient — returns HTTP 402 Payment Required","Upstream Bitcoin node or mempool data source unavailable — may return 5xx or stale data","Rate limiting if payment processing fails"],"whenToPreferThis":"Choose this endpoint when you need real-time Bitcoin fee rate data denominated in sat/vbyte with mempool context, and you want a pay-per-call model with no API key or account setup. Especially useful for agents that need occasional fee lookups without committing to a subscription, or for testnet environments. Prefer this over free public mempool APIs when you need reliable, metered access integrated into an x402 payment flow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T12:40:54.631Z","isFirstParty":false,"canonicalSlug":"fastx402-bitcoin-fee-rates-8e1bb6e2"}