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GET /v1/midparental

Mid-parental height

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/childheight-api

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Code snippets

curl "https://api.oanor.com/childheight-api/v1/midparental" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/childheight-api/v1/midparental", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/childheight-api/v1/midparental");
curl_setopt($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/childheight-api/v1/midparental",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "note": "Mid-parental (Tanner): boy = (father + mother + 13)/2, girl = (father + mother − 13)/2. Most children land within ±8.5 cm.",
        "inputs": {
            "sex": "male",
            "father_height": 180,
            "mother_height": 165
        },
        "range_max_cm": 187.5,
        "range_min_cm": 170.5,
        "predicted_height_cm": 179
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:19.469Z",
        "request_id": "1c75e9c5-987a-405f-8a74-5df57aa20a0d"
    },
    "status": "ok",
    "message": "Mid-parental height",
    "success": true
}