# Carbon & Cashmere GARCH Volatility Forecast – SOL

> Carbon & Cashmere GARCH Volatility Forecast – SOL is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns GARCH model parameters and annualized conditional volatility forecasts (1d/7d/30d) for Solana (SOL).

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/garch/SOL
- Price: $0.05/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-garch-volatility-forecast-sol-d3abb5a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jicJC8mQHcGXNreOsESBJ

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-garch-volatility-forecast-sol-d3abb5a1
```

Example prompt: What's the current GARCH volatility forecast for Solana — give me the annualized conditional volatility now plus the 1-day, 7-day, and 30-day forecasts, along with the model parameters and half-life.

## When to prefer this

Use this endpoint when you need rigorous, model-based volatility estimates for SOL specifically — not just raw price data. It is ideal for risk management, options pricing intuition, or systematic trading signals that require GARCH-derived conditional volatility and persistence metrics rather than simple historical volatility.

## Known failure modes

- Invalid or unsupported symbol path returns an error or empty response
- Payment not provided or insufficient USDC balance causes a 402 Payment Required response
- Upstream market data unavailable causes a 503 or stale data response
- Rate limiting may occur if too many requests are made in rapid succession

## How this service works

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

## Output

A JSON object containing: current annualized conditional volatility for SOL, GARCH(1,1) parameters (omega, alpha_1, beta_1, persistence), volatility half-life in days, and forward volatility forecasts at 1-day, 7-day, and 30-day horizons. Includes a disclaimer that the data is for informational research 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",
  "forecast": {
   "1d": 0.41,
   "7d": 0.43,
   "30d": 0.45
  },
  "parameters": {
   "omega": 0.001,
   "beta_1": 0.89,
   "alpha_1": 0.08,
   "persistence_alpha_plus_beta": 0.97
  },
  "half_life_days": 4.2,
  "conditional_vol_now_annualized": 0.42
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-garch-volatility-forecast-sol-d3abb5a1/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)