Spec

Code snippets

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

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

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

Example response

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

{
    "data": {
        "notes": "Rate r is the continuous per-period growth rate; time and rate share the same period (years, days…). For disease spread use an epidemiology API and for compound interest a finance API.",
        "service": "populationgrowth-api",
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/logistic": "Logistic growth toward a carrying capacity K.",
            "GET /v1/exponential": "Exponential growth N(t) = N0·e^(r·t) with doubling time.",
            "GET /v1/doubling-time": "Doubling time from a rate or percentage growth."
        },
        "description": "Population dynamics: exponential (Malthusian) and logistic growth with a carrying capacity, plus doubling time."
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:17.747Z",
        "request_id": "2094f327-5286-4a2d-b26e-64e4f5802d72"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}