Monitor a Node.js job

Native fetch (Node 18+) — works with node-cron, Agenda, BullMQ, or a bare interval.

A check has a ping URL. Your job calls it on every successful run. If a ping is late past the grace period, CronCanary alerts you. Copy your check's exact URL from its detail page — examples below use $URL.

node-cron

import cron from "node-cron";

const URL = "$URL";
cron.schedule("0 * * * *", async () => {
  await fetch(URL + "/start").catch(() => {});
  try {
    await doWork();
    await fetch(URL).catch(() => {});           // success
  } catch (e) {
    await fetch(URL + "/fail").catch(() => {}); // failure
    throw e;
  }
});

A small wrapper

async function monitored(url, fn) {
  await fetch(url + "/start").catch(() => {});
  try { const r = await fn(); await fetch(url).catch(() => {}); return r; }
  catch (e) { await fetch(url + "/fail").catch(() => {}); throw e; }
}

await monitored("$URL", runNightlyJob);

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