Spec

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/inference-api/v1/meta");
curl_setopt($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/inference-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": "Confidence as a percentage (e.g. 95), margin of error as a fraction or percent. Z-test assumes a known population standard deviation and the normal approximation.",
        "service": "inference-api",
        "formulae": {
            "ztest": "z = (x̄ − μ₀)/(σ/√n)",
            "confidence": "CI = estimate ± Z·SE",
            "sample_size": "n = Z²·p(1−p)/E²"
        },
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/ztest": "One-sample z-test with z-score, p-value and significance.",
            "GET /v1/confidence": "Confidence interval for a mean or a proportion.",
            "GET /v1/samplesize": "Sample size for a proportion at a confidence level and margin of error, with finite-population correction."
        },
        "description": "Inferential-statistics calculator: sample-size determination, confidence intervals and the one-sample z-test."
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:14.722Z",
        "request_id": "7f3022db-bc2a-42ae-9e7b-29f82fa7d568"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}