Spec

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/balloon-api/v1/meta");
curl_setopt($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/balloon-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": "Diameters in inches, lift in grams. Net helium lift ≈ 1.046 g/L (air 1.225 − helium 0.1786); subtract the latex weight. Garland ≈ 12 balloons/ft. Party planning — helium and temperature vary. For physics buoyancy use a buoyancy API.",
        "service": "balloon-api",
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/float": "Balloons needed to float a payload weight.",
            "GET /v1/helium": "Helium lift (gross & net) of a balloon from its inflated diameter.",
            "GET /v1/garland": "Balloon count and size mix for an organic garland of a given length."
        },
        "description": "Party-balloon maths: helium lift by size, balloons to float a payload, and the balloon count for an arch/garland."
    },
    "meta": {
        "timestamp": "2026-06-06T15:30:50.035Z",
        "request_id": "9d95bb03-eeda-40a9-8745-922b671e1d06"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}