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Carbon & Cashmere DEX-CEX Spread API for ETH
x402
Carbon & Cashmere DEX-CEX Spread API for ETH 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 the current spread between decentralized (DEX) and centralized (CEX) exchange prices for ETH, including pool-level detail and aggregate stats.
Price / call$0.05
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing the coin identifier, a list of pool-level records (DEX name, chain, spread direction, spread percentage, pair address, quote symbol, CEX price in USD, DEX price in USD, liquidity in USD), and aggregate stats (CEX price, number of trusted pools, median spread percentage, absolute max spread percentage).
Example use cases
Spot ETH arbitrage across venues
“Are there any profitable arbitrage opportunities for ETH between DEX and CEX right now? Show me the spread direction, percentage, and which pools have the best liquidity to actually execute on.”
Monitor ETH price discrepancy alert
“Check if the ETH price gap between decentralized and centralized exchanges is larger than usual right now — tell me the spread percentage, which direction it's leaning, and how many trusted pools are showing that discrepancy.”
Compare Uniswap vs CEX ETH pricing
“What's the price difference for ETH between Uniswap and centralized exchanges like Binance at this moment? Give me the pool-level breakdown including liquidity so I can see where the biggest gaps are.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/dex-cex-spread/ETHWhen to prefer
Use this endpoint when you need real-time, pool-level DEX vs CEX price spread data for ETH specifically, particularly for arbitrage detection, market monitoring, or cross-venue price comparison. Prefer this over generic price feeds when the direction and magnitude of the DEX-CEX spread matters, or when you need liquidity context alongside price data.
Side effects
- Unsupported coin symbol returns 404 or empty pools array
- No liquid DEX pools found returns empty pools list with zero trusted pool count
- Stale or unavailable CEX price data may cause incomplete spread calculation
- Rate limiting or payment failure returns 402 or 429 error
- Network timeout if DEX on-chain data is slow to resolve
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"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
}
}
}Tags
x402
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