Connect your Express project to GlitchTip

Install the sentry Node.js SDK:

npm install @sentry/node

Initialize the SDK before any other imports or app setup:

const Sentry = require("@sentry/node");

Sentry.init({
  dsn: "YOUR_DSN",
  tracesSampleRate: 0.01, // 1% of transactions — adjust to your needs
  autoSessionTracking: false, // GlitchTip does not support sessions
});

const express = require("express");
const app = express();

app.get("/", function (req, res) {
  res.send("Hello world!");
});

// The Sentry error handler must be registered before any other error middleware
Sentry.setupExpressErrorHandler(app);

app.listen(3000);

The SDK auto-instruments Express routes and captures unhandled errors.

Verify your setup:

app.get("/debug-glitchtip", function (req, res) {
  throw new Error("Test GlitchTip error!");
});

Tips

• Set tracesSampleRate to a low value in production. Each HTTP request is a transaction — even 1% gives useful performance data.
• Use release and environment options to track deployments.