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APEX Runner Cross Exchange Spread Signal
x402
APEX Runner Cross Exchange Spread Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-14).
Returns a real-time cross-exchange spread signal indicating arbitrage or price divergence opportunities across crypto trading venues
Price / call$0.007
Success—
StatusUnknown
How this service works
APEX Runner: Cross Exchange Spread Signal
Output
A structured signal object indicating the magnitude and direction of price spread across exchanges, including signal strength or score that traders can use to identify arbitrage or divergence opportunities.
Example use cases
Example prompt
“What's the current cross-exchange spread signal for BTC/USDT right now — is there a meaningful arbitrage opportunity between major exchanges?”
Technical details
Endpoint
GEThttps://apexrunner.ai/signals/cross-exchange-spreadWhen to prefer
Use this endpoint when you need a quantitative, pre-computed signal for cross-exchange price spreads rather than raw order book data. Ideal for algorithmic trading agents that want a ready-to-use signal without building their own spread detection logic. Choose this over raw exchange APIs when you want a normalized, comparable signal across multiple venues.
Side effects
- Invalid or unsupported trading pair returns error
- Payment of $3 USDC not fulfilled results in 402 Payment Required
- Exchange data feed temporarily unavailable returns service error
- Rate limiting if called too frequently
- No significant spread detected may return null or zero signal
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"pairs": "object — keyed by asset (BTC/ETH), each with direction, gross/net spread %, kr_mid, hl_mid, arb_active bool, spread_vs_threshold",
"example": {
"pairs": {
"BTC": {
"asset": "BTC",
"hl_mid": 63762.5,
"kr_mid": 63695.45,
"direction": "kr_buy_hl_sell",
"arb_active": false,
"net_spread_pct": -0.2,
"gross_spread_pct": 0.11,
"spread_vs_threshold": -0.55
},
"ETH": {
"asset": "ETH",
"hl_mid": 1681.45,
"kr_mid": 1678.8,
"direction": "kr_buy_hl_sell",
"arb_active": false,
"net_spread_pct": -0.15,
"gross_spread_pct": 0.16,
"spread_vs_threshold": -0.5
}
},
"cached_at": "2026-06-13T12:00:00+00:00",
"active_arbs": 0,
"interpretation": "No arb opportunities above 0.35% — best spread: ETH at -0.150%",
"arb_threshold_pct": 0.35,
"best_spread_asset": "BTC",
"best_net_spread_pct": -0.15
},
"cached_at": "ISO8601 timestamp",
"active_arbs": "int — count of pairs above threshold",
"interpretation": "string — plain-English arb summary",
"arb_threshold_pct": "float — arb threshold (0.35%)",
"best_spread_asset": "string — asset with highest net spread",
"best_net_spread_pct": "float — best net spread %"
}Tags
x402
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