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GET /v1/meta

Spec

Try it live

10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/enthalpy-api

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

curl "https://api.oanor.com/enthalpy-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/enthalpy-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/enthalpy-api/v1/meta");
curl_setopt($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/enthalpy-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "api": "enthalpy",
        "note": "Latent-heat / phase-change enthalpy — computed locally and deterministically, no key, no third-party service.",
        "endpoints": [
            "/v1/latent",
            "/v1/phase-change",
            "/v1/substances",
            "/v1/meta"
        ],
        "substances": [
            "water",
            "ethanol",
            "mercury",
            "lead",
            "aluminium",
            "iron",
            "nitrogen",
            "oxygen"
        ]
    },
    "meta": {
        "timestamp": "2026-06-04T10:18:53.654Z",
        "request_id": "4b09ae49-9a55-4f7b-9dfb-e49492cac805"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}