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Carbon & Cashmere Cointegration Analysis API (ETH-SOL)
x402
Carbon & Cashmere Cointegration Analysis API (ETH-SOL) 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 cointegration test results and mean-reversion analytics for the ETH-SOL trading pair, including Engle-Granger statistics, z-scores, and half-life estimates.
Price / call$0.05
Success—
StatusUnknown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns a JSON object with the base/quote pair labels, Engle-Granger test statistic and p-value with critical values, whether cointegration is confirmed at 5% and 10% significance, the 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
Example prompt
“Run a cointegration test on ETH and SOL — I want to know if they're cointegrated at the 5% level, what the current spread z-score is, and how many days it typically takes for the spread to revert to the mean.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/cointegration/ETH-SOLWhen to prefer
Use this endpoint when you need rigorous statistical cointegration testing between ETH and SOL specifically, especially for pairs trading strategies, statistical arbitrage signal generation, or validating a long-run equilibrium relationship. Prefer this over simple correlation metrics when you need formal hypothesis testing (Engle-Granger) and mean-reversion half-life estimates.
Side effects
- Invalid or unsupported trading pair returns error
- Insufficient historical data for lookback period
- Payment not included or invalid results in 402 Payment Required
- Rate limit exceeded returns 429 error
- Service downtime returns 5xx error
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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