Payout, probability & house edge

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/roulette-api/v1/payout");
curl_setopt($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/roulette-api/v1/payout",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "bet": "straight up (1 number)",
        "note": "The payout is fixed but the wheel has one (European) or two (American) zeros that the payout ignores, which is the house edge: 2.70 % on a single-zero wheel, 5.26 % on a double-zero wheel, the same on almost every bet. Always prefer European (single-zero) — it halves the edge.",
        "inputs": {
            "wheel": "european",
            "bet_type": "straight"
        },
        "payout_to_1": 35,
        "total_numbers": 37,
        "house_edge_pct": 2.7,
        "winning_numbers": 1,
        "win_probability_pct": 2.7
    },
    "meta": {
        "timestamp": "2026-06-06T15:30:39.564Z",
        "request_id": "f3819618-a799-4960-ba6b-8395e077f82f"
    },
    "status": "ok",
    "message": "Payout",
    "success": true
}