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Carbon Cashmere Realized Volatility Analytics
x402
Carbon Cashmere Realized Volatility Analytics is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.12/call, status unknown (last checked 2026-09-15).
Returns multi-estimator realized volatility metrics for a cryptocurrency using 4h bars, including realized vol (7d/30d/full), Parkinson, Garman-Klass, downside semi-variance, and vol-of-vol, all annualized.
Price / call$0.12
Success—
StatusUnknown
How this service works
Multi-estimator realized volatility analytics — realized vol (7d/30d/full), Parkinson range-based (high-low log), Garman-Klass (O/H/L/C), downside semi-variance, vol-of-vol. All annualized for 4h bars (× sqrt(2190)). Informational research data — not investment advice.
Output
Returns annualized volatility estimates across multiple estimators: realized vol at 7d, 30d, and full lookback windows; Parkinson high-low log range vol; Garman-Klass open/high/low/close vol; downside semi-variance; and volatility-of-volatility — all computed from 4-hour OHLC bars scaled by sqrt(2190).
Example use cases
Example prompt
“Can you pull the full realized volatility breakdown for ETH — including Parkinson, Garman-Klass, downside semi-variance, and vol-of-vol, all annualized from 4h bars?”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/volatility/:coinWhen to prefer
Choose this endpoint when you need multiple professional-grade realized volatility estimators (not just simple standard deviation) for a cryptocurrency, especially when you want Parkinson or Garman-Klass range-based estimates, downside semi-variance for risk analysis, or vol-of-vol as a second-order risk metric, all properly annualized from 4h bars.
Side effects
- Unknown or unsupported coin symbol returns a 404 or error response
- Network timeout if the underlying data source is unavailable
- Invalid coin path parameter returns a 400 bad request
- Stale or insufficient bar data may affect accuracy of shorter-window estimates
Tags
x402
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