# Carbon & Cashmere Vol Regime API – ETH

> Carbon & Cashmere Vol Regime 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 the current volatility regime classification for Ethereum (ETH), next-state transition probabilities, vol clustering metrics, annualized volatility, and percentile rank vs historical lookback.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/vol-regime/ETH
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-vol-regime-api-eth-6dbfea54
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BnyjVRuKsqSBmRd_-ohaa

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability carbon-cashmere-vol-regime-api-eth-6dbfea54
```

Example prompt: What's the current volatility regime for ETH — is it normal, expanded, or compressed — and what are the probabilities it transitions to each state next?

## When to prefer this

Use this endpoint when you need Ethereum-specific volatility regime classification with probabilistic next-state forecasting, especially for risk management, options positioning, or systematic trading signal generation. Prefer this over generic price endpoints when you specifically need vol regime context (normal/expanded/compressed) and transition probabilities rather than just a price quote.

## Known failure modes

- Invalid or unsupported symbol in path returns error or empty response
- Network timeout if market data feed is unavailable
- Payment not processed (x402 payment required, insufficient USDC balance)
- Stale data if upstream price feed is delayed
- Rate limiting if too many calls made in short succession

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

A JSON object containing: the current volatility regime label (e.g. 'normal', 'expanded', 'compressed'), next-state transition probabilities for each regime, vol clustering autocorrelation values (ACF array), current annualized volatility as a decimal, and the volatility percentile rank versus historical lookback. Also includes a disclaimer that data is informational only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "_meta": {
   "disclaimer": "Informational research data only — not investment advice."
  },
  "symbol": "BTC",
  "current_regime": "normal",
  "next_state_probs": {
   "normal": 0.65,
   "expanded": 0.17,
   "compressed": 0.18
  },
  "vol_clustering_acf": [
   0.34,
   0.21,
   0.15,
   0.11,
   0.08
  ],
  "current_vol_annualized": 0.38,
  "percentile_vs_lookback": 0.45
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-vol-regime-api-eth-6dbfea54/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)