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Kronos CEX Premium Spread API
x402
Kronos CEX Premium Spread API is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns the cross-exchange price premium of a crypto asset on Coinbase versus a global composite median across OKX, Kraken, and Binance, with an interpretive label indicating US/institutional demand bias.
Price / call$0.02
Success—
StatusUnknown
How this service works
Paid market-intelligence API over x402
Output
A JSON object containing the asset symbol, timestamp, Coinbase spot price, composite median price (from OKX, Kraken, Binance), premium percentage (positive = Coinbase above composite), number of sources used, a human-readable interpretation string (e.g. 'Mild US/institutional demand bias'), availability flag, and a disclaimer. Point-in-time only — no historical percentile or z-score included.
Example use cases
Detect US institutional demand surge
“Check the Coinbase premium for BTC-USD right now and tell me if there's a meaningful premium versus the global composite — I want to know if US institutional demand is spiking.”
Cross-exchange arbitrage opportunity scan
“Pull the current CEX premium for ETH-USD and show me how much Coinbase is trading above or below OKX, Kraken, and Binance so I can evaluate if a spread exists worth watching.”
Market regime context for trading decision
“Before I place a BTC trade, can you grab the Kronos cross-exchange premium for BTC-USD and tell me what the spread and interpretation say about current demand bias?”
Technical details
Endpoint
GEThttps://kronossignals.com/api/v1/cex-premium/%7Basset%7DWhen to prefer
Choose this endpoint when you need a real-time, point-in-time view of how Coinbase's price compares to a global composite of major non-US exchanges (OKX, Kraken, Binance), specifically to gauge US or institutional demand bias. Prefer it over generic price feeds when the cross-exchange premium signal — not just the raw price — is what matters for your analysis or trading context.
Side effects
- Unsupported asset symbol returns an error or available:false
- Downstream exchange feed unavailable may reduce composite_source_count or mark available:false
- Payment failure via x402 protocol blocks the response
- Stale data if exchange APIs are delayed — timestamp reflects data age
- Malformed asset parameter (e.g. missing '-USD' suffix) may return error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-07-02T10:00:00.000Z",
"asset": "BTC-USD",
"available": true,
"disclaimer": "Cross-exchange premium is informational only. Spread may reflect latency, liquidity, or fees — not a pure demand signal. Not financial advice.",
"premium_pct": 0.2,
"sources_used": [
{
"role": "reference",
"price": 61320.5,
"exchange": "coinbase"
},
{
"role": "composite",
"price": 61195.2,
"exchange": "okx"
},
{
"role": "composite",
"price": 61201.4,
"exchange": "kraken"
},
{
"role": "composite",
"price": 61198.3,
"exchange": "binance"
}
],
"coinbase_price": 61320.5,
"interpretation": "Coinbase is trading at a +0.20% premium to global composite. Mild US/institutional demand bias.",
"historical_note": "Point-in-time only — no 24h percentile or 30d z-score (no historical baseline stored).",
"composite_median": 61198.3,
"composite_source_count": 3
}
}Tags
x402
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