Best buy/sell venues and spread for a coin

Code snippets

curl "https://api.oanor.com/cryptoarbitrage-api/v1/arbitrage" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/cryptoarbitrage-api/v1/arbitrage", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/cryptoarbitrage-api/v1/arbitrage");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/cryptoarbitrage-api/v1/arbitrage",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "base": "ETH",
        "note": "Indicative gross spread from public last prices; excludes fees, withdrawal limits and slippage.",
        "buy_at": {
            "price": 1665.255,
            "exchange": "coinbase"
        },
        "sell_at": {
            "price": 1666.29,
            "exchange": "kucoin"
        },
        "mid_price": 1665.963,
        "spread_abs": 1.035,
        "spread_pct": 0.0622,
        "profit_per_unit": 1.035,
        "exchanges_compared": 5
    },
    "meta": {
        "timestamp": "2026-06-09T03:02:36.466Z",
        "request_id": "b184cb11-156d-4ddd-9a26-cb89c8730359"
    },
    "status": "ok",
    "message": "Arbitrage retrieved successfully",
    "success": true
}