# Carbon Cashmere Volatility Regime Classifier

> Carbon Cashmere Volatility Regime Classifier 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).

Classifies a cryptocurrency's current volatility regime (compressed/normal/expanded/extreme) using rolling 14-bar vol percentile and returns Markov transition probabilities plus vol-clustering autocorrelation (lags 1–5).

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/vol-regime/:coin
- Price: $0.12/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-e17d5ec2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SnNoELvEaqwYGP3IH0gOb

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 api-carbon-cashmere-de-e17d5ec2
```

Example prompt: What volatility regime is Bitcoin in right now — compressed, normal, expanded, or extreme — and what are the Markov transition probabilities showing the chance it shifts to each other regime?

## When to prefer this

Use this endpoint when you need a structured, quantitative volatility regime label for a specific cryptocurrency — especially when Markov regime-switching probabilities or vol-clustering persistence (ACF) are needed for risk management, options strategy selection, or signal filtering. Prefer over raw vol metrics when regime context and transition dynamics are the goal.

## Known failure modes

- Unsupported coin symbol returns 404 or error — endpoint supports a limited set of coins
- Stale or unavailable market data may return outdated regime labels
- Invalid coin slug format returns a 400 bad request
- Network or rate-limit errors return 5xx responses
- Lookback window parameter out of range may return validation error

## How this service works

Volatility regime classification (compressed/normal/expanded/extreme) based on rolling 14-bar vol percentile over lookback window. Returns Markov transition probabilities from current regime + vol-clustering ACF (lag 1-5). Informational research data — not investment advice.

## Output

Returns the current volatility regime label (compressed/normal/expanded/extreme) derived from a rolling 14-bar vol percentile, Markov transition probabilities from the current regime to all other regimes, and autocorrelation function values for vol clustering at lags 1 through 5.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-e17d5ec2/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)