Spec

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/tidal-api/v1/meta");
curl_setopt($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/tidal-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": "Masses in kg, distances and radii in m, densities in kg/m³. G = 6.674×10⁻¹¹. Tidal effects scale as 1/d³.",
        "service": "tidal-api",
        "formulae": {
            "hill": "r_H = a·(1−e)·(m/3M)^(1/3)",
            "tidal": "a = 2·G·M·r/d³",
            "roche_fluid": "d = 2.44·R·(ρM/ρm)^(1/3)",
            "roche_rigid": "d = R·(2·ρM/ρm)^(1/3)"
        },
        "constants": {
            "gravitational_constant": 6.6743e-11
        },
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/hill-sphere": "Hill-sphere radius from the orbital distance and the two masses.",
            "GET /v1/roche-limit": "Roche limit (rigid and fluid) from the primary radius and the two densities.",
            "GET /v1/tidal-force": "Tidal (differential) acceleration a = 2·G·M·r/d³, and force if a body mass is given."
        },
        "description": "Tidal-physics and gravitational-dominance calculator: tidal acceleration across a body, the Roche limit (rigid and fluid) and the Hill-sphere radius."
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:34.266Z",
        "request_id": "fdc8a0a7-cfb3-46ae-b269-883e05bdacd2"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}