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Carbon & Cashmere DEX-CEX Spread API (BTC)
x402
Carbon & Cashmere DEX-CEX Spread API (BTC) 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 spread between decentralized exchange (DEX) and centralized exchange (CEX) prices for BTC, including pool-level details and spread statistics.
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 DEX pools with their chain, spread percentage, spread direction (dex_lower or dex_higher), DEX and CEX prices in USD, pool pair address, quote symbol, and liquidity in USD, plus aggregate stats including CEX price, trusted pool count, median spread, and maximum absolute spread.
Example use cases
Example prompt
“What's the current DEX versus CEX price spread for BTC right now — which pools have the biggest discrepancy, and is DEX priced higher or lower than the centralized exchange?”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/dex-cex-spread/BTCWhen to prefer
Use this endpoint when you need real-time arbitrage intelligence specifically between DEX and CEX venues for BTC, particularly when you want pool-level granularity including liquidity, pair address, and directional spread. Prefer this over generic price APIs when the goal is identifying DEX-CEX price discrepancies or arbitrage signals rather than just a single reference price.
Side effects
- Unsupported coin symbol returns 404 or empty pools array
- No trusted DEX pools found for the requested coin returns empty results
- CEX price feed unavailable causes null cex_price_usd
- Stale or low-liquidity pools may produce unreliable spread data
- Payment not processed (x402) results in 402 Payment Required response
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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