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Carbon & Cashmere BTC-ETH Cointegration Analysis
x402
Carbon & Cashmere BTC-ETH Cointegration Analysis is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns statistical cointegration analysis between BTC and ETH including Engle-Granger test results, z-score spread, beta coefficient, and mean-reversion half-life over a 90-day lookback.
Price / call$0.05
Success—
StatusUnknown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing: whether BTC-ETH is cointegrated at 5% and 10% significance levels, Engle-Granger test statistic and p-value with critical values, current spread value and z-score, beta coefficient, ADF p-value for mean reversion, and estimated half-life in days over a 90-day lookback window.
Example use cases
Pairs trading entry signal check
“Check if there's a mean-reversion opportunity between BTC and ETH right now — I need the current spread z-score and whether the pair is cointegrated, so I can decide if it's worth entering a pairs trade.”
Statistical arbitrage backtesting research
“Run the cointegration analysis on BTC and ETH for me — I want the Engle-Granger test statistic, p-value, and beta coefficient so I can validate whether this pair is suitable for a stat arb strategy I'm building.”
Mean reversion half-life assessment
“How long does the BTC-ETH spread typically take to mean-revert right now? Pull the latest half-life estimate and let me know if the spread z-score is at an extreme level worth acting on.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/cointegration/BTC-ETHWhen to prefer
Use this endpoint when building pairs trading strategies, statistical arbitrage systems, or quantitative research tools that need to assess the long-run equilibrium relationship between BTC and ETH. Prefer this over general price endpoints when you specifically need cointegration statistics, spread z-scores, or mean-reversion half-life for the BTC-ETH pair rather than raw prices or trend signals.
Side effects
- Endpoint may return stale data if upstream price feeds are delayed
- Invalid or unsupported pair symbol returns an error
- Payment not included or insufficient USDC balance results in 402 Payment Required
- Rate limiting may apply under high request volume
- Network timeout if crypto data source is temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"base": "BTC",
"pair": "BTC-ETH",
"_meta": {
"disclaimer": "Informational research data only — not investment advice."
},
"quote": "ETH",
"spread": {
"current": 0.023,
"zscore_current": 1.42,
"beta_coefficient": 0.89
},
"engle_granger": {
"p_value": 0.012,
"test_statistic": -3.42,
"critical_values": {
"5pct": -3.38
}
},
"lookback_days": 90,
"mean_reversion": {
"adf_p_value": 0.018,
"half_life_days": 4.2
},
"is_cointegrated_at_5pct": true,
"is_cointegrated_at_10pct": true
}
}Tags
x402
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