Spec

Code snippets

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

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

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

Example response

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

{
    "data": {
        "name": "Duration API",
        "notes": "Years and months use calendar averages for total_seconds (flagged via `approximate`); /between is exact from the real timestamps.",
        "version": "v1",
        "endpoints": [
            {
                "path": "/v1/parse",
                "params": {
                    "duration": "ISO-8601 duration, e.g. P3Y6M4DT12H30M5S (required)"
                },
                "returns": "components, total_seconds, humanized"
            },
            {
                "path": "/v1/format",
                "params": {
                    "seconds": "number, OR",
                    "years_months_weeks_days_hours_minutes_seconds": "individual fields"
                },
                "returns": "ISO-8601 string + components"
            },
            {
                "path": "/v1/humanize",
                "params": {
                    "duration": "ISO-8601 string, OR seconds: number"
                },
                "returns": "human-readable text"
            },
            {
                "path": "/v1/between",
                "params": {
                    "end": "ISO date or unix ts (required)",
                    "start": "ISO date or unix ts (required)"
                },
                "returns": "exact duration between two instants"
            },
            {
                "path": "/v1/meta",
                "params": [],
                "returns": "this document"
            }
        ],
        "description": "Parse, format, humanize and measure ISO-8601 durations (PnYnMnDTnHnMnS). Pure local, no key."
    },
    "meta": {
        "timestamp": "2026-06-02T16:51:50.396Z",
        "request_id": "23c4d99e-63d7-4763-a61a-03ba51fa6415"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}