Spec

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/fatigue-api/v1/meta");
curl_setopt($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/fatigue-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": "Stresses and strengths in any one consistent unit (MPa typical). Mean-stress criteria treat compressive mean stress as non-damaging (σm clamped at 0). Marin factors default to 1.",
        "service": "fatigue-api",
        "formulae": {
            "gerber": "(n·σa)/Se + (n·σm/Sut)² = 1",
            "goodman": "1/n = σa/Se + σm/Sut",
            "soderberg": "1/n = σa/Se + σm/Sy"
        },
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/criteria": "Goodman, Soderberg and Gerber safety factors for infinite life.",
            "GET /v1/stress-cycle": "Alternating and mean stress, range and stress ratio from max/min stress.",
            "GET /v1/endurance-limit": "Corrected endurance limit from Sut and the Marin modifying factors."
        },
        "description": "Mechanical fatigue calculator: stress cycle (alternating/mean/ratio), mean-stress safety factors (Goodman, Soderberg, Gerber) and the Marin-corrected endurance limit."
    },
    "meta": {
        "timestamp": "2026-06-05T11:30:33.960Z",
        "request_id": "7222a7db-90f8-4ee5-8911-6e5e78dd8f4f"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}