Send install and sign-up attribution to your backend

app.post("/linkrunner-webhook", async (req, res) => {
  // 1. The header carries your project key
  if (req.headers["linkrunner-key"] !== process.env.LINKRUNNER_KEY) {
    return res.status(401).end();
  }

  // 2. Answer with a direct 2xx, no redirects
  res.status(200).json({ received: true });

  // 3. Dedupe, then do the work
  const { event_type, lr_install_id, user_id } = req.body;
  const key = [event_type, lr_install_id, user_id].join(":");
  if (await seen(key)) return;
  await queue.push(req.body);
});

1st attempt

Immediately

2nd attempt

1 second after the first failure

3rd attempt

2 seconds after the second failure

Source IPs

8.234.94.188, 8.234.80.204