# Carbon & Cashmere DEX-CEX Spread API for SOL

> Carbon & Cashmere DEX-CEX Spread API for SOL is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status down (last checked 2026-09-14).

Returns real-time DEX vs CEX price spread data for Solana (SOL), including pool-level spread percentages, liquidity, and directional arbitrage signals.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/dex-cex-spread/SOL
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-dex-cex-spread-api-for-sol-4e9fd408
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4KmIN6ydkyGJxoxrzqhHI

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-dex-cex-spread-api-for-sol-4e9fd408
```

Example prompt: What's the current DEX vs CEX price spread for SOL right now — show me which pools have the biggest arbitrage gap, the spread percentage, and how much liquidity is behind them.

## When to prefer this

Use this endpoint when you need real-time DEX vs CEX price comparison specifically for SOL, want pool-level granularity on spread and liquidity, or are building arbitrage detection, alerting, or market intelligence workflows around Solana pricing across decentralized and centralized venues.

## Known failure modes

- No liquidity data available for SOL pools — returns empty pool array
- CEX price feed unavailable — spread calculations cannot be performed
- Invalid coin symbol in path — 404 or empty response
- Payment not included or insufficient — 402 Payment Required
- Rate limit exceeded — 429 Too Many Requests

## How this service works

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

## Output

A JSON object containing the coin symbol (SOL), a list of DEX pools with their spread percentage vs CEX (positive = DEX higher, negative = DEX lower), DEX price in USD, CEX price in USD, liquidity in USD, pair address, chain, and quote symbol, plus aggregate stats including median spread, max absolute spread, trusted pool count, and CEX reference price.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "ATOM",
  "pools": [
   {
    "dex": "uniswap",
    "chain": "ethereum",
    "direction": "dex_lower",
    "spread_pct": -10.82,
    "pair_address": "0x...",
    "quote_symbol": "WETH",
    "cex_price_usd": 1.94,
    "dex_price_usd": 1.73,
    "liquidity_usd": 86938000
   }
  ],
  "stats": {
   "cex_price_usd": 1.94,
   "trusted_pools": 1,
   "median_spread_pct": -10.82,
   "abs_max_spread_pct": 10.82
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-dex-cex-spread-api-for-sol-4e9fd408/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)