Choose a tier above and check out securely with Stripe.

Checkout drops you on the claim page, which reveals your API key — shown exactly once, so save it. Then register your Stripe restricted key via POST /v1/stripe-key (see the repo README). Offers apply against your Stripe account only. Until you register a key, your flows run in dry-run mode — safe to test.

Your backend mints a short-lived token for the cancelling customer (POST /v1/widget-tokens with your API key — the key itself never reaches the browser). Add the snippet to your billing page, pass the token, and call Staystack.openCancelFlow() from your cancel button:

<script src="https://YOURHOST/widget/staystack.js"></script>
<script>
Staystack.init({ endpoint: "https://YOURHOST",
  sessionToken: tokenFromYourBackend,
  onCancel: function(){ /* your real cancellation */ } });
</script>

Each cancellation reason gets a save offer: pause for “temporary”, discount for “too expensive”, downgrade for “wrong plan”. Defaults are sensible out of the box.

On Growth and up, two variants run per reason and the stats endpoint shows save rates per variant. Keep what saves, kill what doesn't.