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Bitcoin Fee Estimator Accuracy Scoreboard
x402
Bitcoin Fee Estimator Accuracy Scoreboard is a paid API for AI agents from cdp.bitcoinsapi.com, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).
Returns a ranked leaderboard of Bitcoin fee estimation sources ordered by historical accuracy (mean absolute error in sat/vB) over a configurable lookback window.
Price / call$0.005
Success—
StatusDown
How this service works
Satoshi API fee estimator scoreboard: accuracy analytics for choosing which Bitcoin fee source to trust.
Output
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).
Example use cases
Example prompt
“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?”
Technical details
Endpoint
GEThttps://cdp.bitcoinsapi.com/api/v1/fees/observatory/scoreboardWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Tags
x402
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