{"uid":"cap_98II4ks4wDcWiIPSkzkBZ","slug":"cdp-bitcoinsapi-com-5d638419","name":"Bitcoin Fee Estimator Accuracy Scoreboard","description":"Satoshi API fee estimator scoreboard: accuracy analytics for choosing which Bitcoin fee source to trust.","url":"https://cdp.bitcoinsapi.com/api/v1/fees/observatory/scoreboard","method":"GET","headers":{},"bodySchema":{"type":"object","input":{"type":"http","method":"GET","resource":"https://cdp.bitcoinsapi.com/api/v1/fees/observatory/scoreboard","queryParams":{"hours":{"type":"number","default":168,"required":false,"description":"Lookback window in hours (default 7 days)"}}},"output":{"type":"json","schema":{"type":"array","items":{"type":"object","required":["source","rank"],"properties":{"rank":{"type":"integer"},"source":{"type":"string"},"sampleCount":{"type":"integer"},"meanAbsoluteErrorSatVb":{"type":"number"}}}},"example":[{"rank":1,"source":"satoshi-api","sampleCount":144,"meanAbsoluteErrorSatVb":2.1}],"mimeType":"application/json"},"properties":{"input":{"type":"object","properties":{"queryParams":{"hours":{"type":"number","default":168,"required":false,"description":"Lookback window in hours (default 7 days)"}}}},"output":{"type":"object","required":["type","mimeType","example"],"properties":{"type":{"type":"string"},"schema":{"type":"object"},"example":{"type":"object"},"mimeType":{"type":"string"}}}}},"responseSchema":null,"example":null,"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":"down","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_1kNT5Le8aTVxBH_lEEYuW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked leaderboard of Bitcoin fee estimation sources ordered by historical accuracy (mean absolute error in sat/vB) over a configurable lookback window.","exampleAgentPrompt":"Which Bitcoin fee estimator has been most accurate over the past 7 days — show me the full scoreboard ranked by how closely each source predicted actual fees?","exampleUseCases":null,"resultDescription":"An array of ranked fee-source objects, each with: rank (integer), source name (string), sample count (integer), and mean absolute error in sat/vB (float). Lower MAE = higher rank. Default lookback is 168 hours (7 days).","failureModes":["Invalid hours parameter (non-numeric) returns 400 error","Very short lookback windows (e.g. hours=1) may return sparse sample counts or empty results","Service unavailable (503) if underlying fee data pipeline is down","Payment required (402) if x402 micropayment header is missing or insufficient"],"whenToPreferThis":"Use this endpoint when you need to decide which Bitcoin fee estimation source to trust before making a fee-sensitive transaction decision. Ideal for agents that aggregate multiple fee sources and need to weight or select the most historically accurate one. Prefer this over raw fee endpoints when you need meta-level accuracy analytics rather than a current fee estimate.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T22:26:51.120Z","isFirstParty":false}