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Carbon & Cashmere Rolling Correlation API – ETH/SOL
x402
Carbon & Cashmere Rolling Correlation 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 2026-09-15).
Returns the rolling 30-day Pearson correlation between ETH and SOL prices, with regime classification, percentile rank, and statistical summary 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 the current Pearson correlation value between ETH and SOL (e.g. 0.82), the regime label (e.g. 'strongly_positive'), trend direction (e.g. 'stable'), the percentile rank within the 90-day lookback, mean and standard deviation of correlation over that lookback, the number of data points, and a disclaimer that the data is for research purposes only.
Example use cases
ETH-SOL portfolio diversification check
“I'm holding both ETH and SOL in my portfolio — are they actually giving me diversification right now, or are they moving so closely together that I'm basically doubling up on the same risk?”
Pairs trading signal for ETH-SOL
“I'm considering a pairs trade on ETH and SOL — what does the current 30-day correlation look like, is the regime strongly positive or breaking down, and is this correlation level historically unusual based on the last 90 days?”
Crypto correlation regime trend analysis
“Has the relationship between ETH and SOL been getting stronger or weaker lately — what's the trend direction on their rolling correlation and how does the current reading compare statistically to the past 90 days?”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/rolling-correlation/ETH-SOLWhen to prefer
Use this endpoint when you need a statistically grounded, pre-computed rolling correlation for the ETH-SOL pair with regime and percentile context — especially useful for portfolio risk assessment, pairs trading signals, or diversification checks. Prefer this over building your own correlation from raw price feeds when you need regime classification and historical percentile context in a single call.
Side effects
- Unsupported pair slug in the URL path returns a 404 or empty result
- Downstream price data feed outage may yield stale or missing data_points
- Malformed query parameters produce a 400 validation error
- Payment failure (insufficient USDC balance) results in a 402 response blocking the call
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",
"trend": "stable",
"regime": "strongly_positive",
"statistics": {
"std_over_lookback": 0.08,
"current_percentile": 0.68,
"mean_over_lookback": 0.78
},
"data_points": 540,
"window_days": 30,
"lookback_days": 90,
"current_correlation": 0.82
}
}Tags
x402
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