{"uid":"cap_v_-tvP0J8TTloDuph2yeW","slug":"bitcoin-benji-fee-estimates-api-de437f6c","name":"Bitcoin Benji Fee Estimates API","description":"L402-gated APIs: real-time Bitcoin mempool intelligence and private AI inference. Pay-per-call via Lightning. Zero API keys. Zero subscriptions.","url":"https://api.bitcoinbenji.com/fees","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_IZ88VMFJK9UkTbg4rte6g","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 real-time Bitcoin mempool fee estimates via a Lightning-native pay-per-call endpoint","exampleAgentPrompt":"What are the current Bitcoin mempool fee rates — I need to know the recommended sat/vbyte for fast, medium, and slow confirmation right now.","exampleUseCases":[{"title":"Optimize wallet transaction fees","prompt":"What's the current Bitcoin fee rate I should use if I want my transaction confirmed within the next block? Give me the sat/vbyte for fast, medium, and slow priority."},{"title":"Monitor mempool congestion for DCA bot","prompt":"Check the current Bitcoin mempool fee rates and tell me if fees are low enough right now for a routine on-chain transfer — I want to keep costs under 10 sat/vbyte if possible."},{"title":"Estimate cost before broadcasting transaction","prompt":"Before I send this Bitcoin transaction, can you look up the current recommended fee rate so I can estimate how much it'll cost in total to get a confirmation in the next hour?"}],"resultDescription":"A JSON object containing real-time Bitcoin mempool fee estimates, typically broken down by confirmation priority tiers (e.g. fastest, half-hour, one-hour) expressed in satoshis per virtual byte (sat/vbyte).","failureModes":["402 Payment Required if Lightning/L402 payment not provided or invalid","Network timeout if mempool data source is unavailable","Stale data if mempool indexer is lagging","Malformed JSON if upstream mempool provider returns unexpected format"],"whenToPreferThis":"Choose this endpoint when you need real-time, pay-per-call Bitcoin fee estimates without committing to a subscription or API key. It is ideal for agents making infrequent or sporadic fee lookups, or for privacy-conscious workflows where no account registration is desired. Prefer it over free mempool explorers when you need programmatic access with guaranteed availability and Lightning-native micropayment billing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:31:15.272Z","isFirstParty":false}