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Carbon & Cashmere Hurst Exponent API – ETH
x402
Carbon & Cashmere Hurst Exponent API – ETH is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns Hurst exponent values and trend/randomness interpretations for Ethereum (ETH) across multiple time windows (7d, 30d, full history)
Price / call$0.01
Success—
StatusUnknown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing Hurst exponent scores for ETH across three time horizons (7d, 30d, full), each accompanied by an interpretation label ('random_walk' or 'trending'), plus a disclaimer noting the data is for informational research only and not investment advice.
Example use cases
ETH regime detection for strategy
“Before I deploy my ETH momentum strategy, can you check whether Ethereum is currently in a trending or random-walk regime using the Hurst exponent across the 7-day and 30-day windows?”
Research report on ETH persistence
“I'm writing a market research note on Ethereum price dynamics — pull the Hurst exponent scores across all available time horizons and tell me whether ETH shows signs of long-range dependence or behaves more like a random walk.”
Compare short vs long-term ETH behavior
“Is ETH's price behavior more persistent over the short term or the long term? Grab the Hurst analysis for the 7-day, 30-day, and full history and walk me through how the trend characteristics shift across those windows.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/hurst/ETHWhen to prefer
Use this endpoint when you need to quantify whether ETH price dynamics exhibit trending (persistent) or random-walk behavior using the Hurst exponent — a rigorous statistical measure of long-range dependence. Prefer this over simple moving average or RSI-based signals when you want a fractal/statistical characterization of market regime rather than a momentum or mean-reversion indicator alone.
Side effects
- Invalid or unsupported coin symbol in URL path returns an error
- Network or upstream data unavailability causes a 5xx response
- Malformed request headers (e.g. missing x402 payment) result in 402 Payment Required
- Rate limiting may occur under heavy usage
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"_meta": {
"disclaimer": "Informational research data only — not investment advice."
},
"symbol": "BTC",
"hurst_7d": 0.48,
"hurst_30d": 0.55,
"hurst_full": 0.52,
"interpretation_7d": "random_walk",
"interpretation_30d": "trending",
"interpretation_full": "random_walk"
}
}Tags
x402
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