Group size for a probability

Extraits de code

curl "https://api.oanor.com/birthdayparadox-api/v1/people-needed" \
  -H "x-oanor-key: oanor_test_..."

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

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

Exemple de réponse

Une réponse réelle de ce endpoint, capturée lors du dernier contrôle de santé.

{
    "data": {
        "note": "Smallest group size whose collision probability reaches the target. For a 50% birthday match it is 23; the approximation is √(2·d·ln(1/(1−p))).",
        "inputs": {
            "days": 365,
            "probability": 0.5
        },
        "approximation": 22.4944,
        "people_needed": 23,
        "achieved_probability": 0.50729723
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:10.867Z",
        "request_id": "568cfd46-5955-46df-81f9-180d97e12bec"
    },
    "status": "ok",
    "message": "People needed",
    "success": true
}