Spec

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/collatz-api/v1/meta");
curl_setopt($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/collatz-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": "Positive integers up to 100000000000000. BigInt arithmetic keeps the peak exact. The conjecture (unproven) is that every start eventually reaches 1.",
        "service": "collatz-api",
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/steps": "Stopping time and peak altitude without the full path.",
            "GET /v1/sequence": "Full Collatz sequence, step count and peak from a starting number."
        },
        "description": "Collatz conjecture (3n+1 / hailstone) sequences, stopping time and peak value."
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:10.641Z",
        "request_id": "5a54b6d5-d2ff-4bd8-a7e8-ba6facc84121"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}