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Kronos Volatility API
x402
Kronos Volatility API is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns annualized realized volatility term structure (7d and 30d) for a crypto asset, including Parkinson, Garman-Klass, and close-to-close estimators with percentile context and vol regime classification.
Price / call$0.02
Success—
StatusUnknown
How this service works
Paid market-intelligence API over x402
Output
A JSON object containing: annualized realized volatility for 7d and 30d windows (close-to-close, Parkinson, Garman-Klass estimators), a recommended best estimator per window, volatility regime label (e.g. 'elevated'), full percentile context (current vol, historical min/max, sample count, window-high/low flags), data source attribution (Binance daily klines), and timestamp of the snapshot.
Example use cases
Options pricing vol input check
“Before I price this BTC options position, pull the latest realized volatility for BTC-USD — I need the 7-day and 30-day annualized vols, the Garman-Klass and Parkinson estimates, and what percentile each window is sitting at historically.”
Crypto trading regime filter
“Is BTC currently in an elevated or normal volatility regime? Give me the Kronos vol term structure for BTC-USD so I can decide whether to size down my position.”
Automated risk dashboard update
“Fetch the latest realized volatility data for ETH-USD including the 30-day annualized vol, its historical percentile rank, and whether it's at a window high — I'm updating my risk dashboard.”
Technical details
Endpoint
GEThttps://kronossignals.com/api/v1/volatility/%7Basset%7DWhen to prefer
Choose this endpoint when you need multi-estimator realized volatility with historical percentile context for crypto assets — particularly when you need Parkinson or Garman-Klass high-low range estimators rather than simple close-to-close vol. Prefer this over generic price APIs when the use case is risk management, options pricing, regime detection, or vol-based position sizing. The term structure (7d vs 30d) and vol regime label make it more useful than a single-number vol figure.
Side effects
- Unsupported asset symbol returns error or empty response
- Stale data if Binance feed is delayed — check as_of timestamp
- Malformed asset path parameter causes 4xx error
- Payment not processed (x402 flow failure) results in 402 response with no data
- Insufficient candles for a window if asset is newly listed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "All estimates are annualized realized volatility using closed daily candles. Annualized by sqrt(252) trading-day convention.",
"as_of": "2026-07-02T10:00:00.000Z",
"asset": "BTC-USD",
"source": "Binance daily klines (closed candles only)",
"symbol": "BTCUSDT",
"disclaimer": "Realized volatility from Binance daily OHLC. Historical; not a forecast. Not financial advice.",
"term_structure": [
{
"note": "annualized realized volatility",
"window": "7d",
"n_candles": 7,
"parkinson": 0.48,
"percentile": 0.72,
"vol_regime": "elevated",
"garman_klass": 0.51,
"best_estimator": "parkinson",
"close_to_close": 0.54
},
{
"note": "annualized realized volatility",
"window": "30d",
"n_candles": 30,
"parkinson": 0.58,
"percentile": 0.81,
"vol_regime": "elevated",
"garman_klass": 0.61,
"best_estimator": "garman_klass",
"close_to_close": 0.62
}
],
"vol_7d_annualized": 0.54,
"percentile_context": [
{
"max": 1.05,
"min": 0.22,
"estimator": "parkinson",
"percentile": 0.72,
"vol_window": "7d",
"current_vol": 0.48,
"sample_count": 87,
"is_window_low": false,
"is_window_high": false
},
{
"max": 0.98,
"min": 0.28,
"estimator": "parkinson",
"percentile": 0.81,
"vol_window": "30d",
"current_vol": 0.58,
"sample_count": 87,
"is_window_low": false,
"is_window_high": true
}
],
"vol_30d_annualized": 0.62
}
}Tags
x402
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