# Carbon & Cashmere Signal API – BTC Signal Feed

> Carbon & Cashmere Signal API – BTC 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 a real-time ML-powered trading signal for Bitcoin including regime classification, directional call, confidence score, and win-rate track record.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/signal-feed/BTC
- 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-btc-signal-feed-b25f8315
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_usMcsSvxSPyZIUeS0XDcw

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-btc-signal-feed-b25f8315
```

Example prompt: What's the current Carbon & Cashmere ML signal for BTC — is it actionable, what direction is it calling, and how confident is the model?

## When to prefer this

Use this endpoint when you need a pre-computed, ML-driven directional signal for Bitcoin with regime context and confidence scoring, especially when you want a single actionable output rather than raw price data or technical indicators. Prefer this over generic price feeds when regime classification (e.g. high_volatility) and model confidence matter to your decision logic.

## Known failure modes

- Unsupported coin symbol returns 404 or empty response
- Stale or unavailable market data may cause signal delay or error
- Rate limiting or payment failure via x402 protocol returns 402
- Malformed query returns 400 bad request

## How this service works

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

## Output

Returns a JSON object with coin ticker (BTC), model name (tsfresh_xgb), current market regime (e.g. high_volatility), directional call (long/short), an actionable boolean, confidence score (0–1), probability score (0–1), and historical track record including win rate.

## 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-btc-signal-feed-b25f8315/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)