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Carbon & Cashmere Beta-to-BTC Signal API
x402
Carbon & Cashmere Beta-to-BTC Signal API 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 the beta coefficient of BTC relative to itself (or a given coin) against BTC, including regime classification, R-squared, alpha, and 30-day rolling statistics.
Price / call$0.01
Success—
StatusUnknown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns a JSON object with BTC's beta coefficient, regime label (e.g. 'amplifier'), R-squared fit, daily alpha percentage, stability classification, and 30-day rolling stats (mean, std, current beta) over a 90-day lookback window.
Example use cases
Bitcoin regime check before trading
“Before I put on a large BTC position, can you pull the current regime classification for Bitcoin — is it in amplifier or dampener mode right now, and how stable is that signal?”
BTC alpha and R-squared analysis
“What's Bitcoin's daily alpha and R-squared fit looking like today? I want to know how well the beta model is explaining BTC's moves and whether there's any excess return on top of that.”
Rolling beta trend for Bitcoin
“Can you grab the 30-day rolling beta stats for BTC — give me the mean, standard deviation, and where the current beta sits relative to that range so I can see if it's trending up or down?”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/beta-to-btc/BTCWhen to prefer
Use this endpoint when you need quantitative beta and regime signals for BTC specifically — especially when you want to know how Bitcoin is behaving relative to the broader market (amplifier vs dampener), need R-squared and alpha metrics, or want rolling 30-day beta statistics. Prefer this over generic price APIs when the user wants statistical market characterization rather than just price data.
Side effects
- Invalid coin ticker returns error or empty response
- Coin not tracked by Carbon & Cashmere returns 404 or null data
- Payment not included or insufficient (x402 payment required at $0.01 USDC per call)
- API in beta may have intermittent availability
- Lookback window insufficient data for some newer coins
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"beta": 1.12,
"coin": "ETH",
"_meta": {
"disclaimer": "Informational research data only — not investment advice."
},
"regime": "amplifier",
"r_squared": 0.78,
"stability": "stable",
"rolling_30d": {
"std": 0.08,
"mean": 1.11,
"current_beta": 1.15
},
"lookback_days": 90,
"alpha_daily_pct": -0.02
}
}Tags
x402
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