# Carbon Cashmere Multi-Coin ML Trading Signal Feed

> Carbon Cashmere Multi-Coin ML Trading Signal Feed is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Returns ML-powered directional trading signals (long/short/neutral) with probability, confidence, actionable flag, and 30-day backtest performance for up to 20 cryptocurrencies using v3 tsfresh XGBoost models.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/signal-feed
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-6a646179
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aoKnm2PeLh319iufMKal8

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-6a646179
```

Example prompt: Pull the latest ML trading signals for BTC, ETH, SOL, BNB, and XRP — show me the direction, probability, confidence score, and whether each is flagged as actionable, plus the 30-day backtest record for each.

## When to prefer this

Use this endpoint when you need a multi-coin ML signal sweep across up to 20 assets in a single call, especially when you want XGBoost tsfresh-based directional classification with probability and confidence scoring plus built-in 30-day backtest track record. Prefer over single-coin or ensemble endpoints when batch signal screening or portfolio-level signal filtering is the primary goal.

## Known failure modes

- Requesting more than 20 coins returns a validation error or truncated result
- Invalid or unsupported coin symbol returns empty or error entry
- Model inference delay may cause stale signals during high-volatility periods
- Payment failure (x402) if USDC balance is insufficient blocks the response

## How this service works

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

## Output

A feed of up to 20 coin entries, each containing: directional signal (long/short/neutral), probability value, confidence score, actionable boolean flag, and 30-day backtest performance metrics — all generated by v3 tsfresh XGBoost models.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 20,
  "signals": {
   "BTC": {
    "direction": "long",
    "actionable": true,
    "confidence": 0.93,
    "probability": 0.97,
    "track_record": {
     "sharpe": -1.87,
     "win_rate": 41.2
    }
   }
  },
  "actionable_count": 5
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-6a646179/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)