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Carbon & Cashmere BTC Funding Rate History API
x402
Carbon & Cashmere BTC Funding Rate History API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status down (last checked 2026-09-14).
Returns historical Bitcoin perpetual futures funding rate time series with statistical summaries (avg, max, min, current) over a configurable lookback window.
Price / call$0.02
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing: the symbol (BTCUSDT), lookback window in days, interval (8h), aggregate stats (sample count, average rate, max rate, min rate, current rate), and a chronological series array of timestamps with raw rate and annualized percentage for each interval.
Example use cases
Detect Bitcoin funding rate extremes
“Check the Bitcoin perpetual funding rate history over the past 14 days and flag any intervals where the rate hit unusually high or low extremes — I want to know if we're in an overheated long or short squeeze environment right now.”
Infer BTC market sentiment trend
“Pull the last 60 days of BTC perpetual funding rate data and tell me whether the overall trend has been bullish or bearish based on how the average and current rate compare — I'm trying to gauge whether the market is net long or net short.”
Mean-reversion research on funding rates
“Get me the full funding rate time series for Bitcoin perpetual futures over the past 30 days, including the annualized percentages for each 8-hour interval — I want to study how quickly rates revert to the mean after hitting peaks or troughs.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/history/funding/BTCWhen to prefer
Use this endpoint when you need structured historical Bitcoin funding rate data with pre-computed statistics (avg/max/min/current) and annualized percentages — especially for trend analysis, mean-reversion research, or sentiment inference from funding rate dynamics. Prefer this over raw exchange APIs when you want ready-to-use aggregated stats without additional computation.
Side effects
- Invalid or unsupported symbol returns an error response
- Network timeout if the upstream data source is unavailable
- Payment failure via x402 protocol blocks the request
- Malformed query parameters may return a 400 bad request
- Historical data may have gaps during exchange outages
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"days": 30,
"stats": {
"samples": 90,
"avg_rate": 0.00008,
"max_rate": 0.0003,
"min_rate": -0.0002,
"current_rate": 0.0001
},
"series": [
{
"ts": "2026-04-01T00:00:00Z",
"rate": 0.0001,
"annualized_pct": 10.95
}
],
"symbol": "BTCUSDT",
"interval": "8h"
}
}Tags
x402
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