# Carbon Cashmere Funding Arbitrage Scanner

> Carbon Cashmere Funding Arbitrage Scanner is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status down (last checked 2026-09-14).

Scans funding rates and open interest concentration across Binance, Bybit, and OKX to return per-coin spreads, exchange dominance, and OI-imbalance-based arbitrage opportunities

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/funding-arbitrage
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-8246af67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sF8sTpwgB9EugXhVmQeeX

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-8246af67
```

Example prompt: Scan funding rates and open interest concentration across Binance, Bybit, and OKX right now and show me which coins have the biggest cross-exchange spreads or OI imbalances that look like arbitrage opportunities.

## When to prefer this

Choose this endpoint when you need real-time, cross-exchange funding rate and OI data specifically covering Binance, Bybit, and OKX in a single call with pre-computed arbitrage signals. Prefer over manually querying each exchange API when you want normalized spreads, dominance metrics, and ranked opportunities without building your own aggregation layer.

## Known failure modes

- Exchange API unavailability causes incomplete data for affected venue
- Rate limiting from upstream exchanges may delay or reduce coin coverage
- No arbitrage opportunities found returns empty arbitrage_opportunities array
- Invalid query parameters return 400 with schema validation error
- Payment not provided or insufficient returns 402 Payment Required

## How this service works

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

## Output

Returns a structured JSON with per-coin funding rate spreads across exchanges, exchange dominance scores indicating where OI is concentrated, and a ranked list of arbitrage opportunities based on OI imbalance signals — including meta information about the scan.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spreads": [
   {
    "coin": "BTC",
    "funding_rate": 0.000075,
    "binance_oi_usd": 6600000000,
    "oi_concentration": "binance_dominant"
   }
  ],
  "arbitrage_opportunities": [
   {
    "coin": "BTC",
    "long_exchange": "okx",
    "short_exchange": "binance",
    "estimated_spread_bps": 12.5
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-8246af67/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)