# Carbon & Cashmere Signal API – SOL Signal Feed

> Carbon & Cashmere Signal API – SOL Signal Feed is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns real-time ML-powered trading signals, market regime classification, and confidence scores for Solana (SOL).

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/signal-feed/SOL
- Price: $0.02/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-signal-api-sol-signal-feed-da32ab86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nzYNW9dkLAQA47AZY41zs

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-signal-api-sol-signal-feed-da32ab86
```

Example prompt: What's the current Carbon & Cashmere trading signal for SOL — is it long or short, what's the confidence score, and is the signal actionable right now?

## When to prefer this

Use this endpoint when you need a single, pre-computed, ML-driven directional signal with regime classification and confidence scoring for SOL specifically — ideal for automated trading bots, signal dashboards, or decision-support agents that need a fast, low-cost per-call answer without running their own model inference.

## Known failure modes

- Coin not supported or path typo returns 404
- Stale or missing market data may reduce confidence or return null fields
- x402 payment failure results in 402 Payment Required if USDC not provided
- Rate limiting if calls exceed plan quota
- Temporary ML model unavailability returns 503

## How this service works

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

## Output

Returns a JSON object containing: the coin ticker (SOL), the ML model used (e.g. tsfresh_xgb), current market regime (e.g. high_volatility), directional signal (long/short), whether the signal is actionable (boolean), confidence score (0–1), probability score (0–1), and historical win rate track record.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "BTC",
  "model": "tsfresh_xgb",
  "regime": "high_volatility",
  "direction": "long",
  "actionable": true,
  "confidence": 0.93,
  "probability": 0.97,
  "track_record": {
   "win_rate": 41.2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-signal-api-sol-signal-feed-da32ab86/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)