# Carbon Cashmere Long/Short Ratio API

> Carbon Cashmere Long/Short Ratio API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status down (last checked 2026-09-14).

Returns long/short ratios from Binance and Bybit across 4 data sources for 15 perpetual futures pairs, with contrarian signals and signal strength indicators.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/long-short
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-9de9efa8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bIqnYmlHUYb76A4OvUqrT

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-9de9efa8
```

Example prompt: What's the current long/short ratio for BTC across Binance Global Accounts, Top Traders, and Bybit — and is there any extreme positioning that would trigger a contrarian signal?

## When to prefer this

Use this endpoint when you need aggregated long/short sentiment across multiple exchanges and trader tiers for crypto perpetual futures, especially when looking for contrarian signals based on extreme crowd positioning. Prefer this over generic price feeds when the goal is crowd sentiment analysis or identifying overcrowded trades.

## Known failure modes

- Unsupported coin symbol returns empty data or error
- Coin not in the 15 supported perpetual futures pairs returns no results
- Missing required query parameter may return error or default result
- Data source temporarily unavailable may result in partial results with fewer than 4 sources

## How this service works

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

## Output

Returns an array of long/short ratio data points for the requested coin across up to 4 sources (Binance Global Accounts, Binance Top Trader Accounts, Binance Top Trader Positions, Bybit), plus a contrarian signal label (extreme_long, extreme_short, or neutral) and a signal strength value indicating how extreme the positioning is.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "BTC",
  "data": [
   {
    "signal": "neutral",
    "symbol": "BTCUSDT",
    "global_long_pct": 57.2,
    "signal_strength": 0.14
   }
  ],
  "count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-9de9efa8/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)