# Carbon & Cashmere Mean-Reversion Analytics – ETH

> Carbon & Cashmere Mean-Reversion Analytics – 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 2026-09-15).

Returns mean-reversion analytics for Ethereum including z-scores to 20/50/200-bar moving averages, Ornstein-Uhlenbeck half-life, and mean-reversion probability.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/mean-reversion/ETH
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-mean-reversion-analytics-eth-300e8775
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9zRPAWtOYJ_9g_52MwHu9

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-mean-reversion-analytics-eth-300e8775
```

Example prompt: What are the mean-reversion signals for ETH right now — specifically the z-score to the 20, 50, and 200-bar moving averages, the Ornstein-Uhlenbeck half-life, and the probability that it reverts to the mean?

## When to prefer this

Use this endpoint when you need quantitative mean-reversion statistics specifically for ETH, including z-scores relative to multiple moving average windows and Ornstein-Uhlenbeck process parameters. Prefer this over generic price endpoints when the agent needs to assess whether ETH is statistically overextended and likely to revert.

## Known failure modes

- Invalid or unsupported symbol returns an error
- Service unavailable if the data feed is down
- Payment failure if x402 USDC payment is not completed
- Stale data if upstream price feed is delayed

## How this service works

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

## Output

A JSON object containing the ETH symbol, z-scores to 20/50/200-bar moving averages, the Ornstein-Uhlenbeck half-life in days, a boolean flag indicating whether ETH is mean-reverting, the OU lambda per bar, and the reversion probability — plus a disclaimer that the 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",
  "z_to_ma_20": 1.2,
  "z_to_ma_50": 0.8,
  "z_to_ma_200": 2.1,
  "half_life_days": 5.8,
  "is_mean_reverting": true,
  "ou_lambda_per_bar": 0.02,
  "reversion_probability": 0.23
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-mean-reversion-analytics-eth-300e8775/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)