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GET /v1/meta

Spec

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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/turnover-api

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Code snippets

curl "https://api.oanor.com/turnover-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/turnover-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/turnover-api/v1/meta");
curl_setopt($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/turnover-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": "Use consistent volume and flow units (litres + litres/hour, or gallons + GPH). Pools target an 8–12 h turnover (2–4/day); aquariums 4–10× the tank per hour. For pump power use a pump API.",
        "service": "turnover-api",
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/aquarium": "Effective turnover after head loss, or the rated pump for a target turnovers-per-hour.",
            "GET /v1/turnover": "Turnover time and turnovers/day from volume + flow, or the flow for a target turnover."
        },
        "description": "Water turnover & circulation maths: pool/tank turnover time, turnovers per day, and aquarium filtration with head loss."
    },
    "meta": {
        "timestamp": "2026-06-06T07:14:10.557Z",
        "request_id": "93ec1645-f823-403e-98a0-d755fc5c61cf"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}