Dedicated Webhook Reliability · v1.2

Webhooks fail silently. Stop finding out from angry customers.

A dead-man’s switch and instant failure alerting engine for Stripe, Shopify, and Medusa. When a payment handler throws 500s or webhook traffic dries up, STACKSTER alerts your team in seconds.

< 15ms Ping Ingest Latency·Zero Node Dependencies·Immediate & Scheduled Alerting·Slack, Discord, Email & Webhooks
import { NextResponse } from "next/server";
import Stripe from "stripe";

const stripe = new Stripe(process.env.STRIPE_SECRET_KEY!);
const PING_URL = "https://api.stackster.app/p/YOUR_CHECK_UUID";

export async function POST(req: Request) {
  const body = await req.text();
  const sig = req.headers.get("stripe-signature")!;

  try {
    const event = stripe.webhooks.constructEvent(
      body,
      sig,
      process.env.STRIPE_WEBHOOK_SECRET!
    );

    // 1. Process payment / subscription logic here
    await handleStripeEvent(event);

    // 2. Success: Ping STACKSTER to reset dead-man's timer
    fetch(PING_URL, { method: "POST", body: JSON.stringify({ run_id: event.id }) });

    return NextResponse.json({ received: true });
  } catch (err: any) {
    // 3. Immediate Alert: Signal failure node directly to STACKSTER
    fetch(`${PING_URL}/fail`, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ error: err.message, stack: err.stack }),
    });

    return NextResponse.json({ error: err.message }, { status: 400 });
  }
}

Trusted by developers protecting critical payment, checkout, and inventory webhooks

StripeShopifyMedusaJSLemon SqueezyPaddleNext.jsFastAPI
Interactive Sandbox

See how STACKSTER guards your webhooks

Select a real-world scenario to simulate how STACKSTER protects against both explicit handler crashes and silent drops.

Monitor: Stripe Checkout Webhooks
Interval: 60m · Grace: 15m

Webhook Processed (200 OK)

Heartbeat ping registered. Dead-man's timer extended by 60 minutes.

UP
Response TimingJust now
Channel / DestinationIngest HTTP Gateway
Switch StrategyScheduled Ingest
Engineered for High-Volume Webhooks

Everything you need for ironclad webhook reliability

Built from the ground up to protect checkout pipelines, e-commerce synchronizations, and subscription events against silent breakage.

Wedge Feature

Immediate /fail Error Dispatch

Don't wait for a missing heartbeat when you already know an exception occurred. Ping /p/:uuid/fail inside your catch block to notify on-call engineers within 15ms.

Heartbeat

Silence & Inactivity Detection

The true dead-man's switch: if webhook traffic unexpectedly drops to zero due to DNS issues, expired certificates, or third-party suspensions, we alert you.

Schema Guard

Payload Assertion Rules

Enforce runtime contract checks. Verify that event.type contains 'payment' or customer_id is present. Failed assertions automatically trigger failure alerts.

< 15ms

Zero Extra Webhook Latency

Ping STACKSTER asynchronously with fire-and-forget or edge waitUntil(). Your HTTP 200 response returns to Stripe or Shopify instantly without risk of retry loops.

Telemetry

Latency Degradation Detection

Detect downstream database deadlocks before they cause timeouts. We analyze rolling execution duration and alert if 3 consecutive webhooks exceed baseline by 50%.

Multi-Channel

Slack, Discord & PagerDuty

Route webhook alerts where your team lives. Broadcast to dedicated Slack/Discord channels, trigger PagerDuty escalation policies, or send custom webhooks.

Predictable pricing for peace of mind

Metered, not unlimited — so the plan that fits your stack is the one that keeps the alerts honest.

Free

For a real evaluation

$0/mo

  • 5 monitors
  • 1 team seat
  • 5 min ping interval
  • 30-day log retention
  • API access
  • Status pages
Start for free
Most Popular

Pro

For a production stack

$14.99/mo

  • 25 monitors
  • 5 team seats
  • 1 min ping interval
  • Priority support
  • Custom alert channels
  • Payload assertions
Start monitoring
Best Value

Agency

For managing multiple client workspaces

$49.99/mo

  • 100 monitors
  • 100 team seats
  • Multiple client workspaces
  • Datadog / PagerDuty
  • Audit logs
  • Priority support
Start Agency plan

All plans include a 14-day trial of Pro features · Cancel anytime

Webhook Reliability FAQ

Frequently Asked Questions

Everything you need to know about monitoring Stripe, Shopify, and Medusa webhooks with STACKSTER.